Fix the following gcc complain
arch/um/kernel/skas/mmu.c: In function 'uml_setup_stubs':
arch/um/kernel/skas/mmu.c:106:16: warning: unused variable 'pages' [-Wunused-variable]
Signed-Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
... rather than open-coding the 64bit versions. endian.h has those guys.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
while we can't just use -U$(SUBARCH), we still need to kill idiotic define
(implicit -Di386=1), both for SUBARCH=i386 and SUBARCH=x86/CONFIG_64BIT=n
builds.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Fix the following build breakage in v3.4-rc2 that happens
with CONFIG_OMAP_MUX=y:
arch/arm/mach-omap1/mux.c:89:1: error: 'FUNC_MUX_CTRL_9' undeclared here (not in a function)
arch/arm/mach-omap1/mux.c:89:1: error: 'PULL_DWN_CTRL_2' undeclared here (not in a function)
arch/arm/mach-omap1/mux.c:93:1: error: 'FUNC_MUX_CTRL_C' undeclared here (not in a function)
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch is omitted in v2 patch of Jaecheol Lee.
drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_clkdiv':
drivers/cpufreq/exynos5250-cpufreq.c:144: error: 'EXYNOS5_CLKDIV_STATCPU0' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:144: error: (Each undeclared identifier is reported only once
drivers/cpufreq/exynos5250-cpufreq.c:144: error: for each function it appears in.)
drivers/cpufreq/exynos5250-cpufreq.c:150: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:152: error: 'EXYNOS5_CLKDIV_STATCPU1' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c: In function 'set_apll':
drivers/cpufreq/exynos5250-cpufreq.c:166: error: 'EXYNOS5_CLKMUX_STATCPU' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c:173: error: 'EXYNOS5_APLL_LOCK' undeclared (first use in this function)
drivers/cpufreq/exynos5250-cpufreq.c: In function 'exynos5250_cpufreq_init':
drivers/cpufreq/exynos5250-cpufreq.c:312: error: 'EXYNOS5_CLKDIV_CPU1' undeclared (first use in this function)
Cc: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This fixes following build error when sound support is selected
on EXYNOS4 platform.
sound/soc/samsung/idma.c: In function ‘idma_close’:
sound/soc/samsung/idma.c:327:11: error: ‘IRQ_I2S0’ undeclared (first use in this function)
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
According to commit 719a4240("mfd: Remove unused LDO supply field
from WM8994 pdata"), the LDO supply field should be removed from
the initializer.
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Pull a few KVM fixes from Avi Kivity:
"A bunch of powerpc KVM fixes, a guest and a host RCU fix (unrelated),
and a small build fix."
* 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Resolve RCU vs. async page fault problem
KVM: VMX: vmx_set_cr0 expects kvm->srcu locked
KVM: PMU: Fix integer constant is too large warning in kvm_pmu_set_msr()
KVM: PPC: Book3S: PR: Fix preemption
KVM: PPC: Save/Restore CR over vcpu_run
KVM: PPC: Book3S HV: Save and restore CR in __kvmppc_vcore_entry
KVM: PPC: Book3S HV: Fix kvm_alloc_linear in case where no linears exist
KVM: PPC: Book3S: Compile fix for ppc32 in HIOR access code
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Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
Pull SuperH fixes from Paul Mundt.
* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh:
sh: fix clock-sh7757 for the latest sh_mobile_sdhi driver
serial: sh-sci: use serial_port_in/out vs sci_in/out.
sh: vsyscall: Fix up .eh_frame generation.
sh: dma: Fix up device attribute mismatch from sysdev fallout.
sh: dwarf unwinder depends on SHcompact.
sh: fix up fallout from system.h disintegration.
Pull arch/tile bug fixes from Chris Metcalf:
"This includes Paul Gortmaker's change to fix the <asm/system.h>
disintegration issues on tile, a fix to unbreak the tilepro ethernet
driver, and a backlog of bugfix-only changes from internal Tilera
development over the last few months.
They have all been to LKML and on linux-next for the last few days.
The EDAC change to MAINTAINERS is an oddity but discussion on the
linux-edac list suggested I ask you to pull that change through my
tree since they don't have a tree to pull edac changes from at the
moment."
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: (39 commits)
drivers/net/ethernet/tile: fix netdev_alloc_skb() bombing
MAINTAINERS: update EDAC information
tilepro ethernet driver: fix a few minor issues
tile-srom.c driver: minor code cleanup
edac: say "TILEGx" not "TILEPro" for the tilegx edac driver
arch/tile: avoid accidentally unmasking NMI-type interrupt accidentally
arch/tile: remove bogus performance optimization
arch/tile: return SIGBUS for addresses that are unaligned AND invalid
arch/tile: fix finv_buffer_remote() for tilegx
arch/tile: use atomic exchange in arch_write_unlock()
arch/tile: stop mentioning the "kvm" subdirectory
arch/tile: export the page_home() function.
arch/tile: fix pointer cast in cacheflush.c
arch/tile: fix single-stepping over swint1 instructions on tilegx
arch/tile: implement panic_smp_self_stop()
arch/tile: add "nop" after "nap" to help GX idle power draw
arch/tile: use proper memparse() for "maxmem" options
arch/tile: fix up locking in pgtable.c slightly
arch/tile: don't leak kernel memory when we unload modules
arch/tile: fix bug in delay_backoff()
...
* one is a workaround that will be removed in v3.5 with proper fix in the tip/x86 tree,
* the other is to fix drivers to load on PV (a previous patch made them only
load in PVonHVM mode).
The rest are just minor fixes in the various drivers and some cleanup in the
core code.
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Merge tag 'stable/for-linus-3.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull xen fixes from Konrad Rzeszutek Wilk:
"Two fixes for regressions:
* one is a workaround that will be removed in v3.5 with proper fix in
the tip/x86 tree,
* the other is to fix drivers to load on PV (a previous patch made
them only load in PVonHVM mode).
The rest are just minor fixes in the various drivers and some cleanup
in the core code."
* tag 'stable/for-linus-3.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/pcifront: avoid pci_frontend_enable_msix() falsely returning success
xen/pciback: fix XEN_PCI_OP_enable_msix result
xen/smp: Remove unnecessary call to smp_processor_id()
xen/x86: Workaround 'x86/ioapic: Add register level checks to detect bogus io-apic entries'
xen: only check xen_platform_pci_unplug if hvm
I have a new optimized x86 "strncpy_from_user()" that will use these
same helper functions for all the same reasons the name lookup code uses
them. This is preparation for that.
This moves them into an architecture-specific header file. It's
architecture-specific for two reasons:
- some of the functions are likely to want architecture-specific
implementations. Even if the current code happens to be "generic" in
the sense that it should work on any little-endian machine, it's
likely that the "multiply by a big constant and shift" implementation
is less than optimal for an architecture that has a guaranteed fast
bit count instruction, for example.
- I expect that if architectures like sparc want to start playing
around with this, we'll need to abstract out a few more details (in
particular the actual unaligned accesses). So we're likely to have
more architecture-specific stuff if non-x86 architectures start using
this.
(and if it turns out that non-x86 architectures don't start using
this, then having it in an architecture-specific header is still the
right thing to do, of course)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull networking updates from David Miller:
1) Fix inaccuracies in network driver interface documentation, from Ben
Hutchings.
2) Fix handling of negative offsets in BPF JITs, from Jan Seiffert.
3) Compile warning, locking, and refcounting fixes in netfilter's
xt_CT, from Pablo Neira Ayuso.
4) phonet sendmsg needs to validate user length just like any other
datagram protocol, fix from Sasha Levin.
5) Ipv6 multicast code uses wrong loop index, from RongQing Li.
6) Link handling and firmware fixes in bnx2x driver from Yaniv Rosner
and Yuval Mintz.
7) mlx4 erroneously allocates 4 pages at a time, regardless of page
size, fix from Thadeu Lima de Souza Cascardo.
8) SCTP socket option wasn't extended in a backwards compatible way,
fix from Thomas Graf.
9) Add missing address change event emissions to bonding, from Shlomo
Pongratz.
10) /proc/net/dev regressed because it uses a private offset to track
where we are in the hash table, but this doesn't track the offset
pullback that the seq_file code does resulting in some entries being
missed in large dumps.
Fix from Eric Dumazet.
11) do_tcp_sendpage() unloads the send queue way too fast, because it
invokes tcp_push() when it shouldn't. Let the natural sequence
generated by the splice paths, and the assosciated MSG_MORE
settings, guide the tcp_push() calls.
Otherwise what goes out of TCP is spaghetti and doesn't batch
effectively into GSO/TSO clusters.
From Eric Dumazet.
12) Once we put a SKB into either the netlink receiver's queue or a
socket error queue, it can be consumed and freed up, therefore we
cannot touch it after queueing it like that.
Fixes from Eric Dumazet.
13) PPP has this annoying behavior in that for every transmit call it
immediately stops the TX queue, then calls down into the next layer
to transmit the PPP frame.
But if that next layer can take it immediately, it just un-stops the
TX queue right before returning from the transmit method.
Besides being useless work, it makes several facilities unusable, in
particular things like the equalizers. Well behaved devices should
only stop the TX queue when they really are full, and in PPP's case
when it gets backlogged to the downstream device.
David Woodhouse therefore fixed PPP to not stop the TX queue until
it's downstream can't take data any more.
14) IFF_UNICAST_FLT got accidently lost in some recent stmmac driver
changes, re-add. From Marc Kleine-Budde.
15) Fix link flaps in ixgbe, from Eric W. Multanen.
16) Descriptor writeback fixes in e1000e from Matthew Vick.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
net: fix a race in sock_queue_err_skb()
netlink: fix races after skb queueing
doc, net: Update ndo_start_xmit return type and values
doc, net: Remove instruction to set net_device::trans_start
doc, net: Update netdev operation names
doc, net: Update documentation of synchronisation for TX multiqueue
doc, net: Remove obsolete reference to dev->poll
ethtool: Remove exception to the requirement of holding RTNL lock
MAINTAINERS: update for Marvell Ethernet drivers
bonding: properly unset current_arp_slave on slave link up
phonet: Check input from user before allocating
tcp: tcp_sendpages() should call tcp_push() once
ipv6: fix array index in ip6_mc_add_src()
mlx4: allocate just enough pages instead of always 4 pages
stmmac: re-add IFF_UNICAST_FLT for dwmac1000
bnx2x: Clear MDC/MDIO warning message
bnx2x: Fix BCM57711+BCM84823 link issue
bnx2x: Clear BCM84833 LED after fan failure
bnx2x: Fix BCM84833 PHY FW version presentation
bnx2x: Fix link issue for BCM8727 boards.
...
Similar to:
2ca052a x86: Use correct byte-sized register constraint in __xchg_op()
... the __add() macro also needs to use a "q" constraint in the
byte-sized case, lest we try to generate an illegal register.
Link: http://lkml.kernel.org/r/4F7A3315.501@goop.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Leigh Scott <leigh123linux@googlemail.com>
Cc: Thomas Reitmayr <treitmayr@devbase.at>
Cc: <stable@vger.kernel.org> v3.3
x86-64 can access the low half of any register, but i386 can only do
it with a subset of registers. 'r' causes compilation failures on i386,
but 'q' expresses the constraint properly.
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Link: http://lkml.kernel.org/r/4F7A3315.501@goop.org
Reported-by: Leigh Scott <leigh123linux@googlemail.com>
Tested-by: Thomas Reitmayr <treitmayr@devbase.at>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org> v3.3
There is an extra and unnecessary call to smp_processor_id()
in cpu_bringup(). Remove it.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The above mentioned patch checks the IOAPIC and if it contains
-1, then it unmaps said IOAPIC. But under Xen we get this:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
IP: [<ffffffff8134e51f>] xen_irq_init+0x1f/0xb0
PGD 0
Oops: 0002 [#1] SMP
CPU 0
Modules linked in:
Pid: 1, comm: swapper/0 Not tainted 3.2.10-3.fc16.x86_64 #1 Dell Inc. Inspiron
1525 /0U990C
RIP: e030:[<ffffffff8134e51f>] [<ffffffff8134e51f>] xen_irq_init+0x1f/0xb0
RSP: e02b: ffff8800d42cbb70 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00000000ffffffef RCX: 0000000000000001
RDX: 0000000000000040 RSI: 00000000ffffffef RDI: 0000000000000001
RBP: ffff8800d42cbb80 R08: ffff8800d6400000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffef
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000010
FS: 0000000000000000(0000) GS:ffff8800df5fe000(0000) knlGS:0000000000000000
CS: e033 DS: 0000 ES: 0000 CR0:000000008005003b
CR2: 0000000000000040 CR3: 0000000001a05000 CR4: 0000000000002660
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/0 (pid: 1, threadinfo ffff8800d42ca000, task ffff8800d42d0000)
Stack:
00000000ffffffef 0000000000000010 ffff8800d42cbbe0 ffffffff8134f157
ffffffff8100a9b2 ffffffff8182ffd1 00000000000000a0 00000000829e7384
0000000000000002 0000000000000010 00000000ffffffff 0000000000000000
Call Trace:
[<ffffffff8134f157>] xen_bind_pirq_gsi_to_irq+0x87/0x230
[<ffffffff8100a9b2>] ? check_events+0x12+0x20
[<ffffffff814bab42>] xen_register_pirq+0x82/0xe0
[<ffffffff814bac1a>] xen_register_gsi.part.2+0x4a/0xd0
[<ffffffff814bacc0>] acpi_register_gsi_xen+0x20/0x30
[<ffffffff8103036f>] acpi_register_gsi+0xf/0x20
[<ffffffff8131abdb>] acpi_pci_irq_enable+0x12e/0x202
[<ffffffff814bc849>] pcibios_enable_device+0x39/0x40
[<ffffffff812dc7ab>] do_pci_enable_device+0x4b/0x70
[<ffffffff812dc878>] __pci_enable_device_flags+0xa8/0xf0
[<ffffffff812dc8d3>] pci_enable_device+0x13/0x20
The reason we are dying is b/c the call acpi_get_override_irq() is used,
which returns the polarity and trigger for the IRQs. That function calls
mp_find_ioapics to get the 'struct ioapic' structure - which along with the
mp_irq[x] is used to figure out the default values and the polarity/trigger
overrides. Since the mp_find_ioapics now returns -1 [b/c the IOAPIC is filled
with 0xffffffff], the acpi_get_override_irq() stops trying to lookup in the
mp_irq[x] the proper INT_SRV_OVR and we can't install the SCI interrupt.
The proper fix for this is going in v3.5 and adds an x86_io_apic_ops
struct so that platforms can override it. But for v3.4 lets carry this
work-around. This patch does that by providing a slightly different variant
of the fake IOAPIC entries.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
A bunch of fixes for regressions (and a few other problems) in 3.4-rc1:
* Fix for regression of mach/io.h cleanup on platforms with PCI or PCMCIA
(adding back the include file on those for now)
* AT91 fixes for usb and spi
* smsc911x ethernet fixes for i.MX
* smsc911x fixes for OMAP
* gpio fixes for Tegra
* A handful of build error and warning fixes for various platforms
* cpufreq kconfig dependencies, build and lowlevel debug fixes for
Samsung platforms
In other words, more or less the regular collection of -rc1/2 type
material. A few of them, in particular the smsc911x for OMAP series, aren't
technically regressions for 3.4, but they're valid fixes and we're still
relatively early in the rc cycle so it seems appropriate to include them.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: SoC fixes: from Olof Johansson:
"A bunch of fixes for regressions (and a few other problems) in
3.4-rc1:
- Fix for regression of mach/io.h cleanup on platforms with PCI or
PCMCIA (adding back the include file on those for now)
- AT91 fixes for usb and spi
- smsc911x ethernet fixes for i.MX
- smsc911x fixes for OMAP
- gpio fixes for Tegra
- A handful of build error and warning fixes for various platforms
- cpufreq kconfig dependencies, build and lowlevel debug fixes for
Samsung platforms
In other words, more or less the regular collection of -rc1/2 type
material. A few of them, in particular the smsc911x for OMAP series,
aren't technically regressions for 3.4, but they're valid fixes and
we're still relatively early in the rc cycle so it seems appropriate
to include them."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
ARM: fix __io macro for PCMCIA
ARM: EXYNOS: Fix compiler warning in dma.c file
ARM: EXYNOS: fix ISO C90 warning
ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
ARM: OMAP2+: hwmod: Restore sysc after a reset
ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
ARM: OMAP3: clock data: fill in some missing clockdomains
ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
gpio: tegra: Iterate over the correct number of banks
gpio: tegra: fix register address calculations for Tegra30
EXYNOS: fix dependency for EXYNOS_CPUFREQ
ARM: at91: dt: remove unit-address part for memory nodes
ARM: at91: fix check of valid GPIO for SPI and USB
USB: ehci-atmel: add needed of.h header file
ARM: at91/NAND DT bindings: add comments
ARM: at91/at91sam9x5.dtsi: fix NAND ale/cle in DT file
USB: ohci-at91: trivial return code name change
...
To fix compile error:
drivers/usb/musb/blackfin.h:51:3: error: #error "Please use PIO mode in MUSB
driver on bf52x chip v0.0 and v0.1"
make[4]: *** [drivers/usb/musb/blackfin.o] Error 1
Signed-off-by: Bob Liu <lliubbo@gmail.com>
This patch fix below compile error:
"bfin-uclinux-ld: L1 data A overflow!"
It is due to the recent lib/gen_crc32table.c change:
46c5801eaf
crc32: bolt on crc32c
it added 8KiB more data to __cacheline_aligned which cause blackfin L1 data
cache overflow.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
early v3.4-rc series. Also contains an HSMMC integration refinement
of an earlier hardware bug workaround.
ARM: OMAP3: clock data: fill in some missing clockdomains
ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
ARM: OMAP AM3517/3505: clock data: change EMAC clocks aliases
ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
ARM: OMAP2+: hwmod: Restore sysc after a reset
ARM: OMAP: clock: fix race in disable all clocks
ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks
ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
ARM: OMAP3xxx: clock data: fix DPLL4 CLKSEL masks
ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data
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Merge tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes
From Paul Walmsley:
OMAP clock, powerdomain, clockdomain, and hwmod fixes intended for the
early v3.4-rc series. Also contains an HSMMC integration refinement
of an earlier hardware bug workaround.
* tag 'omap-fixes-a2-for-3.4rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
ARM: OMAP2+: hwmod: Fix wrong SYSC_TYPE1_XXX_MASK bit definitions
ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status
ARM: OMAP2+: hwmod: Restore sysc after a reset
ARM: OMAP2+: omap_hwmod: Allow io_ring wakeup configuration for all modules
ARM: OMAP3: clock data: fill in some missing clockdomains
ARM: OMAP4: clock data: Force a DPLL clkdm/pwrdm ON before a relock
ARM: OMAP4: clock data: fix mult and div mask for USB_DPLL
ARM: OMAP2+: powerdomain: Wait for powerdomain transition in pwrdm_state_switch()
ARM: OMAP AM3517/3505: clock data: change EMAC clocks aliases
ARM: OMAP: clock: fix race in disable all clocks
ARM: OMAP4: hwmod data: Add aliases for McBSP fclk clocks
ARM: OMAP3xxx: clock data: fix DPLL4 CLKSEL masks
ARM: OMAP3xxx: HSMMC: avoid erratum workaround when transceiver is attached
ARM: OMAP44xx: clockdomain data: correct the emu_sys_clkdm CLKTRCTRL data
Merge batch of fixes from Andrew Morton:
"The simple_open() cleanup was held back while I wanted for laggards to
merge things.
I still need to send a few checkpoint/restore patches. I've been
wobbly about merging them because I'm wobbly about the overall
prospects for success of the project. But after speaking with Pavel
at the LSF conference, it sounds like they're further toward
completion than I feared - apparently davem is at the "has stopped
complaining" stage regarding the net changes. So I need to go back
and re-review those patchs and their (lengthy) discussion."
* emailed from Andrew Morton <akpm@linux-foundation.org>: (16 patches)
memcg swap: use mem_cgroup_uncharge_swap fix
backlight: add driver for DA9052/53 PMIC v1
C6X: use set_current_blocked() and block_sigmask()
MAINTAINERS: add entry for sparse checker
MAINTAINERS: fix REMOTEPROC F: typo
alpha: use set_current_blocked() and block_sigmask()
simple_open: automatically convert to simple_open()
scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
libfs: add simple_open()
hugetlbfs: remove unregister_filesystem() when initializing module
drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
fs/xattr.c:setxattr(): improve handling of allocation failures
fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
sysrq: use SEND_SIG_FORCED instead of force_sig()
proc: fix mount -t proc -o AAA
As described in e6fa16ab9c ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block is
pending in the shared queue.
Also, use the new helper function introduced in commit 5e6292c0f2
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate
code across architectures. In the past some architectures got this code
wrong, so using this helper function should stop that from happening
again.
Acked-by: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As described in e6fa16ab9c ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check for shared signals we're about to block.
Also, use the new helper function introduced in commit 5e6292c0f2
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate
code across architectures. In the past some architectures got this code
wrong, so using this helper function should stop that from happening
again.
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Many users of debugfs copy the implementation of default_open() when
they want to support a custom read/write function op. This leads to a
proliferation of the default_open() implementation across the entire
tree.
Now that the common implementation has been consolidated into libfs we
can replace all the users of this function with simple_open().
This replacement was done with the following semantic patch:
<smpl>
@ open @
identifier open_f != simple_open;
identifier i, f;
@@
-int open_f(struct inode *i, struct file *f)
-{
(
-if (i->i_private)
-f->private_data = i->i_private;
|
-f->private_data = i->i_private;
)
-return 0;
-}
@ has_open depends on open @
identifier fops;
identifier open.open_f;
@@
struct file_operations fops = {
...
-.open = open_f,
+.open = simple_open,
...
};
</smpl>
[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With commit c334bc1 (ARM: make mach/io.h include optional), PCMCIA was
broken. PCMCIA depends on __io() returning a valid i/o address, and most
ARM platforms require IO_SPACE_LIMIT be set to 0xffffffff for PCMCIA. This
needs a better fix with a fixed i/o address mapping, but for now we just
restore things to the previous behavior.
This fixes at91, omap1, pxa and sa11xx. pxa needs io.h if PCI is enabled,
but PCMCIA is not. sa11xx already has IO_SPACE_LIMIT set to 0xffffffff,
so it doesn't need an io.h.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Joachim Eastwood <joachim.eastwood@jotron.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com> (pxa270)
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
From Tony Lindgren:
Note that this also contains a set of fixes that are not regressions
or oopses to properly deal with the smsc911x regulator issue.
Basically the regulators must be per board file as the regulators
can also come from drivers, such as twl4030. So it's best to dumb
down gpmc-smsc911x.c to not even care about the regulators.
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: fix section mismatches in usb-host.c
ARM: OMAP2+: Fix omap2+ build error
ARM: OMAP2+: smsc911x: Add fixed board regulators
ARM: OMAP2+: smsc911x: Remove regulator support from gmpc-smsc911x
ARM: OMAP2+: smsc911x: Remove unused rate calculation
ARM: OMAP2+ smsc911x: Fix possible stale smsc911x flags
ARM: OMAP2+: smsc911x: Remove odd gpmc_cfg/board_data redirection
ARM: OMAP3+: fix oops triggered in omap_prcm_register_chain_handler(v1)
ARM: OMAP2+: OPP: allow OPP enumeration to continue if device is not present
arm: omap3: pm34xx.c: Replace printk() with appropriate pr_*()
arm: omap3: pm34xx.c: Fix omap3_pm_init() error out paths
ARM: OMAP4: Workaround the OCP synchronisation issue with 32K synctimer.
ARM: OMAP4: prm: fix interrupt register offsets
ARM: OMAP: hwmod: Use sysc_fields->srst_shift and get rid of hardcoded SYSC_TYPE2_SOFTRESET_MASK
"Page ready" async PF can kick vcpu out of idle state much like IRQ.
We need to tell RCU about this.
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
These are all small simple patches that only affect arch/powerpc/kvm.
They come from the series that Alex Graf put together but which was too
late for the 3.4 merge window.
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Merge tag 'powerpc-fixes' of git://github.com/paulusmack/linux into new/master
Five fixes for bugs that have crept in to the powerpc KVM implementations.
These are all small simple patches that only affect arch/powerpc/kvm.
They come from the series that Alex Graf put together but which was too
late for the 3.4 merge window.
* tag 'powerpc-fixes' of git://github.com/paulusmack/linux:
KVM: PPC: Book3S: PR: Fix preemption
KVM: PPC: Save/Restore CR over vcpu_run
KVM: PPC: Book3S HV: Save and restore CR in __kvmppc_vcore_entry
KVM: PPC: Book3S HV: Fix kvm_alloc_linear in case where no linears exist
KVM: PPC: Book3S: Compile fix for ppc32 in HIOR access code
Signed-off-by: Avi Kivity <avi@redhat.com>
vmx_set_cr0 is called from vcpu run context, therefore it expects
kvm->srcu to be held (for setting up the real-mode TSS).
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Fixes the following warning:
warning: 'dma_dmamask' defined but not used [-Wunused-variable]
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
In the SYSC_TYPE1_XXX_MASK configuration, SYSC_XXX_SHIFT macro
is used which is not defined anywhere in the kernel.
Until now the build was going through successfully, since it
is not being used anywhere in kernel.
This bug got introduced by the commit
358f0e630d ("OMAP3: hwmod: support
to specify the offset position of various SYSCONFIG register bits.")
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
omap_hwmod_softreset() does not seem to wait for reset status
after doing a softreset. Make it use _ocp_softreset() instead
which does this correctly.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
After a softreset, make sure the sysc settings are correctly
restored.
Reported-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Shubhrajyoti D <shubhrajyoti@ti.com>
[paul@pwsan.com: combined post-reset SYSCONFIG reload code into the
_reset() function to avoid duplication and future mistakes]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Some modules doesn't have SYSC_HAS_ENAWAKEUP bit available (ex: usb
host uhh module) in absence of this flag
omap_hwmod_enable/disable_wakeup avoids configuring pad mux wakeup
capability.
Configure sysc if SYSC_HAS_ENAWAKEUP is available and for other cases
try enabling/disabling wakeup from mux_pad pins.
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
[paul@pwsan.com: updated function kerneldoc documentation]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
3.4: Fix an an Smatch warning that appeared in the 3.4 merge window
3.0: Fix kgdb test suite with SMP for all archs without HW single stepping
2.6.36: Fix kgdb sw breakpoints with CONFIG_DEBUG_RODATA=y limitations on x86
2.6.26: Fix oops on kgdb test suite with CONFIG_DEBUG_RODATA
Fix kgdb test suite with SMP for all archs with HW single stepping
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Merge tag 'for_linus-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
Pull KGDB/KDB regression fixes from Jason Wessel:
- Fix a Smatch warning that appeared in the 3.4 merge window
- Fix kgdb test suite with SMP for all archs without HW single stepping
- Fix kgdb sw breakpoints with CONFIG_DEBUG_RODATA=y limitations on x86
- Fix oops on kgdb test suite with CONFIG_DEBUG_RODATA
- Fix kgdb test suite with SMP for all archs with HW single stepping
* tag 'for_linus-3.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
x86,kgdb: Fix DEBUG_RODATA limitation using text_poke()
kgdb,debug_core: pass the breakpoint struct instead of address and memory
kgdbts: (2 of 2) fix single step awareness to work correctly with SMP
kgdbts: (1 of 2) fix single step awareness to work correctly with SMP
kgdbts: Fix kernel oops with CONFIG_DEBUG_RODATA
kdb: Fix smatch warning on dbg_io_ops->is_console
Pull DMA mapping branch from Marek Szyprowski:
"Short summary for the whole series:
A few limitations have been identified in the current dma-mapping
design and its implementations for various architectures. There exist
more than one function for allocating and freeing the buffers:
currently these 3 are used dma_{alloc, free}_coherent,
dma_{alloc,free}_writecombine, dma_{alloc,free}_noncoherent.
For most of the systems these calls are almost equivalent and can be
interchanged. For others, especially the truly non-coherent ones
(like ARM), the difference can be easily noticed in overall driver
performance. Sadly not all architectures provide implementations for
all of them, so the drivers might need to be adapted and cannot be
easily shared between different architectures. The provided patches
unify all these functions and hide the differences under the already
existing dma attributes concept. The thread with more references is
available here:
http://www.spinics.net/lists/linux-sh/msg09777.html
These patches are also a prerequisite for unifying DMA-mapping
implementation on ARM architecture with the common one provided by
dma_map_ops structure and extending it with IOMMU support. More
information is available in the following thread:
http://thread.gmane.org/gmane.linux.kernel.cross-arch/12819
More works on dma-mapping framework are planned, especially in the
area of buffer sharing and managing the shared mappings (together with
the recently introduced dma_buf interface: commit d15bd7ee44
"dma-buf: Introduce dma buffer sharing mechanism").
The patches in the current set introduce a new alloc/free methods
(with support for memory attributes) in dma_map_ops structure, which
will later replace dma_alloc_coherent and dma_alloc_writecombine
functions."
People finally started piping up with support for merging this, so I'm
merging it as the last of the pending stuff from the merge window.
Looks like pohmelfs is going to wait for 3.5 and more external support
for merging.
* 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
common: DMA-mapping: add NON-CONSISTENT attribute
common: DMA-mapping: add WRITE_COMBINE attribute
common: dma-mapping: introduce mmap method
common: dma-mapping: remove old alloc_coherent and free_coherent methods
Hexagon: adapt for dma_map_ops changes
Unicore32: adapt for dma_map_ops changes
Microblaze: adapt for dma_map_ops changes
SH: adapt for dma_map_ops changes
Alpha: adapt for dma_map_ops changes
SPARC: adapt for dma_map_ops changes
PowerPC: adapt for dma_map_ops changes
MIPS: adapt for dma_map_ops changes
X86 & IA64: adapt for dma_map_ops changes
common: dma-mapping: introduce generic alloc() and free() methods
Minimal fix to allow leon to be built.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Konrad Eisele <konrad@gaisler.com>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit d065bd810b
(mm: retry page fault when blocking on disk transfer) and
commit 37b23e0525
(x86,mm: make pagefault killable)
The above commits introduced changes into the x86 pagefault handler
for making the page fault handler retryable as well as killable.
These changes reduce the mmap_sem hold time, which is crucial
during OOM killer invocation.
Port these changes to 32-bit sparc.
Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit d065bd810b
(mm: retry page fault when blocking on disk transfer) and
commit 37b23e0525
(x86,mm: make pagefault killable)
The above commits introduced changes into the x86 pagefault handler
for making the page fault handler retryable as well as killable.
These changes reduce the mmap_sem hold time, which is crucial
during OOM killer invocation.
Port these changes to 64-bit sparc.
Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Several clocks are missing clockdomains. This can cause problems with
the hwmod and power management code. Fill these in.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Matt Porter <mporter@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
All DPLLs except USB are in ALWON powerdomain. Make sure the
clkdm/pwrdm for USB DPLL (l3init) is turned on before attempting
a DPLL relock. So, mark the database accordingly.
Without this fix, it was seen that DPLL relock fails while testing
relock in a loop of USB DPLL.
Cc: Nishanth Menon <nm@ti.com>
Tested-by: Ameya Palande <ameya.palande@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Commit b1cbdb00d ("OMAP: clockdomain: Wait for powerdomain to be ON
when using clockdomain force wakeup") was assuming that
pwrdm_state_switch() does wait for the powerdomain transition which is
not the case. The missing wait for the powerdomain transition
violates the sequence which the hardware expects, which causes power
management failures on some devices.
Fix this API by adding the pwrdm_wait_transition().
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
[paul@pwsan.com: added some more details in the commit log]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Pull x86 fixes from Ingo Molnar.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, kvm: Call restore_sched_clock_state() only after %gs is initialized
x86: Use -mno-avx when available
x86: Remove the ancient and deprecated disable_hlt() and enable_hlt() facility
x86: Preserve lazy irq disable semantics in fixup_irqs()
Because of the inclusion of skeleton.dtsi, the memory node is
named "memory" we where not modifying the already included one
but creating a new one. It caused bad memory node detection during
early_init_dt_scan_memory() so we modify them.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: devicetree-discuss@lists.ozlabs.org
SPI chip select pins have to be checked by gpio_is_valid().
The USB host overcurrent_pin checking was missing.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Change number of ports to 3 for newer SoCs. Modify pdata structure
and ohci-at91 code that was dealing with ports information and check
of port indexes.
Several coding style errors have been addresses as the patch was touching
affected lines of code and was producing errors while run through
checkpatch.pl.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Change vbus gpio configuration in .dts files to switch to
active low configuration.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org>
Due to an error while handling vbus_pin_active_low in ohci-at91 driver,
the specification of this property was not good in devices/board files.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org> [3.2+]
addruart cannot read from the physical address of the chipid
register, that will fail as soon as the mmu is turned on.
Fixing it to read from the physical or virtual address depending
on the mmu state also does not work, because there is a period
between head.S and exynos_map_io where the mmu is on, the uart
is mapped and used, but the chipid mapping is not yet present.
Fix addruart to use the ARM Main ID cp15 register to determine
if the core is Cortex A15 (EXYNOS5) or not (EXYNOS4).
Signed-off-by: Colin Cross <ccross@android.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Rename EMAC clocks to match driver expectations: both davinci_emac and
davinci_mdio drivers call clk_get(dev, NULL) so we have to provide
("davinci_emac", NULL) and ("davinci_mdio.0", NULL) clocks instead of
("davinci_emac", "emac_clk") and ("davinci_emac", "phy_clk") resp.
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Tested-by: Matt Porter <mporter@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Pull ARM fixes from Russell King:
"Nothing too big here, just small fixes."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: fix more fallout from 9f97da78bf (Disintegrate asm/system.h for ARM)
ARM: fix bios32.c build warning
ARM: 7337/1: ptrace: fix ptrace_read_user for !CONFIG_MMU platforms
ARM: fix missing bug.h include in arch/arm/kernel/insn.c
ARM: sa11x0: fix build errors from DMA engine API updates
Pull Sparc fixes from David Miller:
"One build regression and one serial probe regression fix on sparc."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
serial/sunzilog: fix keyboard on SUN SPARCstation
sparc: pgtable_64: change include order
To fix:
In file included from kernel/exit.c:61:
arch/avr32/include/asm/mmu_context.h: In function 'enable_mmu':
arch/avr32/include/asm/mmu_context.h:135: error: implicit declaration of function 'nop'
It needs an include of the new file created in commit ae47394658
("Disintegrate asm/system.h for AVR32"), but since that file only
contains "nop", and since other arch already have precedent of putting
nop in asm/barrier.h we should just delete the new file and put nop in
barrier.h
Suggested-and-acked-by: David Howells <dhowells@redhat.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
clk_disable_unused is invoked when CONFIG_OMAP_RESET_CLOCKS=y.
Since clk_disable_unused is called as lateinitcall, there can
be more than a few workqueues executing off secondary CPU(s).
The current code does the following:
a) checks if clk is unused
b) holds lock
c) disables clk
d) unlocks
Between (a) and (b) being executed on CPU0, It is possible to
have a driver executing on CPU1 which could do a get_sync->clk_get
(and increase the use_count) of the clock which was just about
to be disabled by clk_disable_unused.
We ensure instead that the entire list traversal is protected by
the lock allowing for parent child clock traversal which could be
potentially be done by runtime operations to be safe as well.
Reported-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
CLKS signal for McBSP ports can be selected from internal (PRCM) or
external (ABE_CLKS pin) source. To be able to use existing code we
need to create clock aliases consistent among OMAP2/3/4.
Based on a patch from Péter Ujfalusi <peter.ujfalusi@ti.com>;
the patch description above is his.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Péter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
The commit 996bc8aebd (mmc: sh_mobile_sdhi:
do not manage PM clocks manually) modified the sh_mobile_sdhi driver to
remove the clk_enable/clk_disable. So, we need to change
the "CLKDEV_CON_ID" to "CLKDEV_DEV_ID".
If we don't change this, we will see the following error from the driver:
sh_mobile_sdhi sh_mobile_sdhi.0: timeout waiting for hardware interrupt (CMD52)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Commit 2a9f5a4d45 "OMAP3 clock: remove unnecessary duplicate of dpll4_m2_ck,
added for 36xx" consolidated dpll4 clock structures between 34xx and 36xx,
but left 34xx CLKSEL masks for most dpll4 related clocks, which causes
clock code to not behave correctly when booting on DM3730 with higher
(36xx only) divisors set:
[ 0.000000] WARNING: at arch/arm/mach-omap2/clkt_clksel.c:375 omap2_init_clksel_parent+0x104/0x114()
[ 0.000000] clock: dpll4_m3_ck: init parent: could not find regval 0
[ 0.000000] WARNING: at arch/arm/mach-omap2/clkt_clksel.c:194 omap2_clksel_recalc+0xd4/0xe4()
[ 0.000000] clock: Could not find fieldval 0 for clock dpll4_m3_ck parent dpll4_ck
Fix this by switching to 36xx masks, as valid divisors will be limited
by clksel_rate lists.
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
If transceiver is attached to a MMC host of ES2.1 OMAP35xx, it seems
2.1.1.128 erratum doesn't apply and there is no data corruption,
probably because of different signal timing. The workaround for this
erratum disables multiblock reads, which causes dramatic loss of
performance (over 75% slower), so avoid it when transceiver is present.
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
[paul@pwsan.com: edited commit message slightly]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
According to the 4430 ES2.0 TRM vX Table 3-744 "CM_EMU_CLKSTCTRL",
the emu_sys clockdomain data in mainline is incorrect.
The emu_sys clockdomain does not support the DISABLE_AUTO state, and
instead it supports the FORCE_WAKEUP state.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Ming Lei <ming.lei@canonical.com>
Cc: Will Deacon <will.deacon@arm.com>
Now the helper function from filter.c for negative offsets is exported,
it can be used it in the jit to handle negative offsets.
First modify the asm load helper functions to handle:
- know positive offsets
- know negative offsets
- any offset
then the compiler can be modified to explicitly use these helper
when appropriate.
This fixes the case of a negative X register and allows to lift
the restriction that bpf programs with negative offsets can't
be jited.
Signed-of-by: Jan Seiffert <kaffeemonster@googlemail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the below section mismatch warning and alike:
WARNING: vmlinux.o(.text+0x281d4): Section mismatch in reference from
the function setup_ehci_io_mux() to the function
.init.text:omap_mux_init_signal()
The function setup_ehci_io_mux() references
the function __init omap_mux_init_signal().
This is often because setup_ehci_io_mux lacks a __init
annotation or the annotation of omap_mux_init_signal is wrong.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
With CONFIG_OMAP4_ERRATA_I688 enabled, omap2+ build
was broken as below:
arch/arm/kernel/io.c: In function '_memcpy_toio':
arch/arm/kernel/io.c:29: error: implicit declaration of function 'outer_sync'
make[1]: *** [arch/arm/kernel/io.o] Error 1
This was caused by commit 9f97da78 (Disintegrate asm/system.h for ARM).
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Initialize fixed regulators in the board files. Trying to
do this in a generic way in gpmc-smsc911x.c gets messy as
the regulator may be provided by drivers, such as twl4030,
for some boards.
Signed-off-by: Russ Dill <russ.dill@ti.com>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
[tony@atomide.com: combined into one patch, updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Adding in support for regulators here creates several headaches.
- Boards that declare their own regulator cannot use this function.
- Multiple calls to this function require special handling.
- Boards that declare id's other than '0' need special handling.
Now that there is a simple regulator_register_fixed, we can push
this registration back into the board files.
Signed-off-by: Russ Dill <russ.dill@ti.com>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Looking back into git history, this code was never used and was
probably left over from a copy/paste.
Signed-off-by: Russ Dill <russ.dill@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
If this function is called the first time with flags set, and the
second time without flags set then the leftover flags from the first
called will be used rather than the desired default flags.
Signed-off-by: Russ Dill <russ.dill@ti.com>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This seems to be a leftover from when gpmc-smsc911x.c was copied
from gpmc-smc91x.c.
Signed-off-by: Russ Dill <russ.dill@ti.com>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Pull arch/microblaze fixes from Michal Simek.
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix ret_from_fork declaration
microblaze: Do not use tlb_skip in early_printk
microblaze: Add missing headers caused by disintegration asm/system.h
microblaze: Fix stack usage in PAGE_SIZE copy_tofrom_user
microblaze: Fix tlb_skip variable on noMMU system
microblaze: Fix __futex_atomic_op macro register usage
Pull m68k fixes from Geert Uytterhoeven:
"Here are a few fixes for the m68k architecture. Nothing fancy this
time, just a build fix for the asm/system.h disintegration, and two
fixes for missing platform checks (one got in during last merge
window), which can cause crashes in multi-platform kernels."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k/q40: Add missing platform check before registering platform devices
m68k/mac: Add missing platform check before registering platform devices
m68k: include asm/cmpxchg.h in our m68k atomic.h
We were leaking preemption counters. Fix the code to always toggle
between preempt and non-preempt properly.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
On PPC, CR2-CR4 are nonvolatile, thus have to be saved across function calls.
We didn't respect that for any architecture until Paul spotted it in his
patch for Book3S-HV. This patch saves/restores CR for all KVM capable PPC hosts.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The ABI specifies that CR fields CR2--CR4 are nonvolatile across function
calls. Currently __kvmppc_vcore_entry doesn't save and restore the CR,
leading to CR2--CR4 getting corrupted with guest values, possibly leading
to incorrect behaviour in its caller. This adds instructions to save
and restore CR at the points where we save and restore the nonvolatile
GPRs.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
In kvm_alloc_linear we were using and deferencing ri after the
list_for_each_entry had come to the end of the list. In that
situation, ri is not really defined and probably points to the
list head. This will happen every time if the free_linears list
is empty, for instance. This led to a NULL pointer dereference
crash in memset on POWER7 while trying to allocate an HPT in the
case where no HPTs were preallocated.
This fixes it by using a separate variable for the return value
from the loop iterator.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
We were failing to compile on book3s_32 with the following errors:
arch/powerpc/kvm/book3s_pr.c:883:45: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
arch/powerpc/kvm/book3s_pr.c:898:79: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
Fix this by explicity casting the u64 to long before we use it as a pointer.
Also, on PPC32 we can not use get_user/put_user for 64bit wide variables,
as there is no single instruction that could load or store variables that big.
So instead, we have to use copy_from/to_user which works everywhere.
Reported-by: Jörg Sommer <joerg@alea.gnuu.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Steven reported his P4 not booting properly, the missing format
attributes cause a NULL ptr deref. Cure this by adding the
missing format specification.
I took the format description out of the comment near
p4_config_pack*() and hope that comment is still relatively
accurate.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1332859842.16159.227.camel@twins
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Commit 086ada54ab
"FB: sa1100: remove global sa1100fb_.*_power function pointers"
got rid of all instances but one in locomolcd.c -- which was
conditional on CONFIG_SA1100_COLLIE. The associated .power
field which replaces the global is populated in mach-sa1100/collie.c
so move the assignment there, but make it conditional on the
locomolcd support, so use CONFIG_BACKLIGHT_LOCOMO in that file.
Cc: arm@kernel.org
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
commit 9f786d033d
"arm/PCI: get rid of device resource fixups"
causes this failure on the versatile:
arch/arm/mach-versatile/pci.c: In function 'pci_versatile_setup_resources':
arch/arm/mach-versatile/pci.c:221: error: 'sys' undeclared (first use in this function)
because the versatile wasn't passing in the full struct pci_sys_data
but only the resource sub-field. Change it to pass in the full
struct so that sys will be in scope.
Reported-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull networking fixes from David Miller:
1) Provide device string properly for USB i2400m wimax devices, also
don't OOPS when providing firmware string. From Phil Sutter.
2) Add support for sh_eth SH7734 chips, from Nobuhiro Iwamatsu.
3) Add another device ID to USB zaurus driver, from Guan Xin.
4) Loop index start in pool vector iterator is wrong causing MAC to not
get configured in bnx2x driver, fix from Dmitry Kravkov.
5) EQL driver assumes HZ=100, fix from Eric Dumazet.
6) Now that skb_add_rx_frag() can specify the truesize increment
separately, do so in f_phonet and cdc_phonet, also from Eric
Dumazet.
7) virtio_net accidently uses net_ratelimit() not only on the kernel
warning but also the statistic bump, fix from Rick Jones.
8) ip_route_input_mc() uses fixed init_net namespace, oops, use
dev_net(dev) instead. Fix from Benjamin LaHaise.
9) dev_forward_skb() needs to clear the incoming interface index of the
SKB so that it looks like a new incoming packet, also from Benjamin
LaHaise.
10) iwlwifi mistakenly initializes a channel entry as 2GHZ instead of
5GHZ, fix from Stanislav Yakovlev.
11) Missing kmalloc() return value checks in orinoco, from Santosh
Nayak.
12) ath9k doesn't check for HT capabilities in the right way, it is
checking ht_supported instead of the ATH9K_HW_CAP_HT flag. Fix from
Sujith Manoharan.
13) Fix x86 BPF JIT emission of 16-bit immediate field of AND
instructions, from Feiran Zhuang.
14) Avoid infinite loop in GARP code when registering sysfs entries.
From David Ward.
15) rose protocol uses memcpy instead of memcmp in a device address
comparison, oops. Fix from Daniel Borkmann.
16) Fix build of lpc_eth due to dev_hw_addr_rancom() interface being
renamed to eth_hw_addr_random(). From Roland Stigge.
17) Make ipv6 RTM_GETROUTE interpret RTA_IIF attribute the same way
that ipv4 does. Fix from Shmulik Ladkani.
18) via-rhine has an inverted bit test, causing suspend/resume
regressions. Fix from Andreas Mohr.
19) RIONET assumes 4K page size, fix from Akinobu Mita.
20) Initialization of imask register in sky2 is buggy, because bits are
"or'd" into an uninitialized local variable. Fix from Lino
Sanfilippo.
21) Fix FCOE checksum offload handling, from Yi Zou.
22) Fix VLAN processing regression in e1000, from Jiri Pirko.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
sky2: dont overwrite settings for PHY Quick link
tg3: Fix 5717 serdes powerdown problem
net: usb: cdc_eem: fix mtu
net: sh_eth: fix endian check for architecture independent
usb/rtl8150 : Remove duplicated definitions
rionet: fix page allocation order of rionet_active
via-rhine: fix wait-bit inversion.
ipv6: Fix RTM_GETROUTE's interpretation of RTA_IIF to be consistent with ipv4
net: lpc_eth: Fix rename of dev_hw_addr_random
net/netfilter/nfnetlink_acct.c: use linux/atomic.h
rose_dev: fix memcpy-bug in rose_set_mac_address
Fix non TBI PHY access; a bad merge undid bug fix in a previous commit.
net/garp: avoid infinite loop if attribute already exists
x86 bpf_jit: fix a bug in emitting the 16-bit immediate operand of AND
bonding: emit event when bonding changes MAC
mac80211: fix oper channel timestamp updation
ath9k: Use HW HT capabilites properly
MAINTAINERS: adding maintainer for ipw2x00
net: orinoco: add error handling for failed kmalloc().
net/wireless: ipw2x00: fix a typo in wiphy struct initilization
...
This merges some of the fixes from Paul Gortmaker for the header file
cleanup fallout.
Some of the patches are going through arch maintainer trees, and David
Howells suggested another be done differently, but this at least fixes a
few cases.
* emailed from Paul Gortmaker <paul.gortmaker@windriver.com>:
asm-generic: add linux/types.h to cmpxchg.h
firewire: restore the device.h include in linux/firewire.h
frv: fix warnings in mb93090-mb00/pci-dma.c about implicit EXPORT_SYMBOL
parisc: fix missing cmpxchg file error from system.h split
blackfin: fix cmpxchg build fails from system.h fallout
avr32: fix build failures from mis-naming of atmel_nand.h
ARM: mach-msm: fix compile fail from system.h fallout
irq_work: fix compile failure on MIPS from system.h split
To fix:
arch/frv/mb93090-mb00/pci-dma.c:31:1: warning: data definition has no type or storage class [enabled by default]
arch/frv/mb93090-mb00/pci-dma.c:31:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
arch/frv/mb93090-mb00/pci-dma.c:31:1: warning: parameter names (without types) in function declaration [enabled by default]
arch/frv/mb93090-mb00/pci-dma.c:38:1: warning: data definition has no type or storage class [enabled by default]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit b4816afa39 ("Move the asm-generic/system.h xchg()
implementation to asm-generic/cmpxchg.h") introduced the concept of
asm/cmpxchg.h but the parisc arch never got one. Fork the cmpxchg
content out of the asm/atomic.h file to create one.
Some minor whitespace fixups were done on the block of code that created
the new file.
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 3bed8d6746 ("Disintegrate asm/system.h for Blackfin [ver #2]")
introduced arch/blackfin/include/asm/cmpxchg.h but has it also including
the asm-generic one which causes this:
CC arch/blackfin/kernel/asm-offsets.s
In file included from arch/blackfin/include/asm/cmpxchg.h:125:0,
from arch/blackfin/include/asm/atomic.h:10,
from include/linux/atomic.h:4,
from include/linux/spinlock.h:384,
from include/linux/seqlock.h:29,
from include/linux/time.h:8,
from include/linux/timex.h:56,
from include/linux/sched.h:57,
from arch/blackfin/kernel/asm-offsets.c:10:
include/asm-generic/cmpxchg.h:24:15: error: redefinition of '__xchg'
arch/blackfin/include/asm/cmpxchg.h:82:29: note: previous definition of '__xchg' was here
make[2]: *** [arch/blackfin/kernel/asm-offsets.s] Error 1
It really only needs two simple defines from asm-generic, so just use
those instead.
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit bf4289cba0 ("ATMEL: fix nand ecc support") indicated that it
wanted to "Move platform data to a common header
include/linux/platform_data/atmel_nand.h" and the new header even had
re-include protectors with:
#ifndef __ATMEL_NAND_H__
However, the file that was added was simply called atmel.h
and this caused avr32 defconfig to fail with:
In file included from arch/avr32/boards/atstk1000/setup.c:22:
arch/avr32/mach-at32ap/include/mach/board.h:10:44: error: linux/platform_data/atmel_nand.h: No such file or directory
In file included from arch/avr32/boards/atstk1000/setup.c:22:
arch/avr32/mach-at32ap/include/mach/board.h:121: warning: 'struct atmel_nand_data' declared inside parameter list
arch/avr32/mach-at32ap/include/mach/board.h:121: warning: its scope is only this definition or declaration, which is probably not what you want
make[2]: *** [arch/avr32/boards/atstk1000/setup.o] Error 1
It seems the scope of the file contents will expand beyond
just nand, so ignore the original intention, and fix up the
users who reference the bad name with the _nand suffix.
CC: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
CC: David Woodhouse <dwmw2@infradead.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To fix:
In file included from arm/boot/compressed/misc.c:28:0:
arm/mach-msm/include/mach/uncompress.h: In function 'putc':
arch/arm/mach-msm/include/mach/uncompress.h:48:3: error: implicit
declaration of function 'smp_mb' [-Werror=implicit-function-declaration]
The putc does a cpu_relax which for this platform is smp_mb.
Bisect indicates the 1st failing commit as: 0195c00244 ("Merge tag
'split-asm_system_h...")
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull powerpc fixes from Benjamin Herrenschmidt:
"This contains a couple more fixes for the system.h disintegration, a
trivial section mismatch fix, a couple of patches from akpm that I
didn't quite get he expected me to pickup, and a few more trivialities
form Kumar that he appear to have forgotten to send me in the previous
batch."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/eeh: Fix use of set_current_state() in eeh event handling set_current_state() wart
powerpc/eeh: Remove eeh_event_handler()->daemonize()
powerpc/kvm: Fallout from system.h disintegration
powerpc: Fix fallout from system.h split up
powerpc: Mark const init data with __initconst instead of __initdata
powerpc/qe: Update the SNUM table for MPC8569 Rev2.0
powerpc/dts: Removed fsl,msi property from dts.
powerpc/epapr: add "memory" as a clobber to all hypercalls
powerpc/85xx: Enable I2C_CHARDEV and I2C_MPC options in defconfigs
powerpc/85xx: add the P1020UTM-PC DTS support
powerpc/85xx: add the P1020MBG-PC DTS support
powerpc/8xxx: remove 85xx/86xx restrictions from fsl_guts.h
The return path as we reload registers and core state requires that r30
hold a boolean indicating whether we are returning from an NMI, but in a
couple of cases we weren't setting this properly, with the result that we
could accidentally unmask the NMI interrupt(s), which could cause confusion.
Now we set r30 in every place where we jump into the interrupt return path.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
We were re-homing the initial task's kernel stack on the boot cpu,
but in fact it's better to let it stay globally homed, since that
task isn't bound to the boot cpu anyway. This is more of a general
cleanup than an actual performance optimization, but it removes
code, which is a good thing. :-)
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Previously we were returning SIGSEGV in this case. It seems cleaner
to return SIGBUS since the hardware figures out alignment traps
before TLB violations, so SIGBUS is the "more correct" signal.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
There were some correctness issues with this code that are now fixed
with this change. The change is likely less performant than it could
be, but it should no longer be vulnerable to any races with memory
operations on the memory network while invalidating a range of memory.
This code is run infrequently so performance isn't critical, but
correctness definitely is.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This idiom is used elsewhere when we do an unlock by writing a zero,
but I missed it here. Using an atomic operation avoids waiting
on the write buffer for the unlocking write to be sent to the home cache.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
It causes "make clean" to fail, for example. Once we have KVM support
complete, we'll reinstate the subdir reference.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Pragmatically it couldn't be wrong to cast pointers to long to compare
them (since all kernel addresses are in the top half of VA space),
but it's more correct to cast to unsigned long.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
If we are single-stepping and make a syscall, we call ptrace_notify()
explicitly on the return path back to user space, since we are returning
to a pc value set artificially to the next instruction, and otherwise
we won't register that we stepped over the syscall instruction (swint1).
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This allows the later-panicking tiles to wait in a lower power state
until they get interrupted with an smp_send_stop().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
We should be holding the init_mm.page_table_lock in shatter_huge_page()
since we are modifying the kernel page tables. Then, only if we are
walking the other root page tables to update them, do we want to take
the pgd_lock.
Add a comment about taking the pgd_lock that we always do it with
interrupts disabled and therefore are not at risk from the tlbflush
IPI deadlock as is seen on x86.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
We were carefully computing a value to use for the number of loops
to spin for, and then ignoring it.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Previously we only handled kernels up to a single huge page in size.
Now we create additional PTEs appropriately.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
If we took a page fault while we had interrupts disabled, we
shouldn't enable them in the page fault handler.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
We make sure not to try to set the home for an MMIO PTE (on tilegx)
or a PTE that isn't referencing memory managed by Linux.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Doing so raises the possibility of self-deadlock if we are waiting
for a backtrace for an oprofile or perf interrupt while we are
in the middle of migrating our own stack page.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Not associated with any code changes, so I'm just lumping these
comment changes into a commit by themselves.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
We now respond to MEM_ERROR traps (e.g. an atomic instruction to
non-cacheable memory) with a SIGBUS.
We also no longer generate a console crash message if a user
process die due to a SIGTRAP.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
In certain circumstances we need to do a bunch of jump-and-link
instructions to fill the hardware return-address stack with nonzero values.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Fix a long-standing bug in the stack backtracer where we would print
garbage to the console instead of kernel function names, if the kernel
wasn't built with symbol support (e.g. mboot).
Make sure to tag every line of userspace backtrace output if we actually
have the mmap_sem, since that way if there's no tag, we know that it's
because we couldn't trylock the semaphore.
Stop doing a TLB flush and examining page tables during backtrace.
Instead, just trust that __copy_from_user_inatomic() will properly fault
and return a failure, which it should do in all cases.
Fix a latent bug where the backtracer would directly examine a signal
context in user space, rather than copying it safely to kernel memory
first. This meant that a race with another thread could potentially
have caused a kernel panic.
Guard against unaligned sp when trying to restart backtrace at an
interrupt or signal handler point in the kernel backtracer.
Report kernel symbolic information for the call instruction rather
than for the following instruction. We still report the actual numeric
address corresponding to the instruction after the call, for the sake
of consistency with the normal expectations for stack backtracers.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Add a comment explaining why this is important, and add a CFLAGS_REMOVE
clause to the Makefile to make sure it happens.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
With lockstat we can end up trying to get a backtrace before
"high_memory" is initialized, so don't worry about range testing
if it is zero.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
It still returns whether @v was not @u, not the old value,
unlike __atomic_add_unless().
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arun Sharma <asharma@fb.com>
We aren't yet using this definition in the kernel, but fix it up
before someone goes looking for it.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Commit bd119c6923
"Disintegrate asm/system.h for Tile"
created the asm/switch_to.h file, but did not add an include
of it to all its users.
Also, commit b4816afa39
"Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h"
introduced the concept of asm/cmpxchg.h but the tile arch
never got one. Fork the cmpxchg content out of the asm/atomic.h
file to create one.
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux
Pull cpumask cleanups from Rusty Russell:
"(Somehow forgot to send this out; it's been sitting in linux-next, and
if you don't want it, it can sit there another cycle)"
I'm a sucker for things that actually delete lines of code.
Fix up trivial conflict in arch/arm/kernel/kprobes.c, where Rusty fixed
a user of &cpu_online_map to be cpu_online_mask, but that code got
deleted by commit b21d55e98a ("ARM: 7332/1: extract out code patch
function from kprobes").
* tag 'for-linus' of git://github.com/rustyrussell/linux:
cpumask: remove old cpu_*_map.
documentation: remove references to cpu_*_map.
drivers/cpufreq/db8500-cpufreq: remove references to cpu_*_map.
remove references to cpu_*_map in arch/
s2ram broke due to this KVM commit:
b74f05d61b x86: kvmclock: abstract save/restore sched_clock_state
restore_sched_clock_state() methods use percpu data, therefore
they must run after %gs is initialized, but before mtrr_bp_restore()
(due to lockstat using sched_clock).
Move it to the correct place.
Reported-and-tested-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
ret_from_fork is used by noMMU system too.
It should be the part of patch
"Disintegrate asm/system.h for Microblaze"
(sha1: c40d04df15)
Signed-off-by: Michal Simek <monstr@monstr.eu>
Fix registration of camera clock so that mx3-camera driver can get its clock
correctly.
Reported-by: Alex Gershgorin <alexg@meprolight.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
