Commit Graph

364961 Commits

Author SHA1 Message Date
Helge Deller
cf71130d63 parisc: disable -mlong-calls compiler option for kernel modules
CONFIG_MLONGCALLS was introduced in commit
ec758f9832 to overcome linker issues when linking
huge linux kernels, e.g. with many modules linked in.

But in the kernel module loader there is no support yet for the new relocation
types, which is why modules built with -mlong-calls can't be loaded.
Furthermore, for modules long calls are not really necessary, since we already
use stub sections which resolve long distance calls.

So, let's just disable this compiler option when compiling kernel modules.

Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25 22:36:50 +02:00
Will Deacon
0f28b62890 parisc: uaccess: fix compiler warnings caused by __put_user casting
When targetting 32-bit processors, __put_user emits a pair of stw
instructions for the 8-byte case. If the type of __val is a pointer, the
marshalling code casts it to the wider integer type of u64, resulting
in the following compiler warnings:

  kernel/signal.c: In function 'copy_siginfo_to_user':
  kernel/signal.c:2752:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  kernel/signal.c:2752:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  [...]

This patch fixes the warnings by removing the marshalling code and using
the correct output modifiers in the __put_{user,kernel}_asm64 macros
so that GCC will allocate the right registers without the need to
extract the two words explicitly.

Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25 22:36:42 +02:00
John David Anglin
87be2f88b2 parisc: Change kunmap macro to static inline function
Change kunmap macro to static inline function to fix build error
compiling drivers/base/dma-buf.c.

Without the change, the following error can occur:

   CC      drivers/base/dma-buf.o
drivers/base/dma-buf.c: In function 'dma_buf_kunmap':
drivers/base/dma-buf.c:427:46:
error: macro "kunmap" passed 3 arguments, but takes just 1

I believe parisc is the only arch to implement kunmap using a macro.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25 22:36:31 +02:00
John David Anglin
ca0ad83da1 parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds.
The Debian experimental linux source package (3.8.5-1) build fails
with the following errors:
...
MODPOST 2016 modules
ERROR: "__ucmpdi2" [fs/btrfs/btrfs.ko] undefined!
ERROR: "__ucmpdi2" [drivers/md/dm-verity.ko] undefined!

The attached patch resolves this problem.  It is based on the s390
implementation of ucmpdi2.c.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25 22:36:15 +02:00
Arnd Bergmann
4626b8daf9 USB: ehci-msm: USB_MSM_OTG needs USB_PHY
The Kconfig entry for USB_EHCI_MSM unconditionally selects USB_MSM_OTG,
which is now only visible when USB_PHY is also enabled.

This adds an appropriate dependency and enables USB_PHY in the msm
defconfig, avoiding the Kbuild warning:

warning: (USB_EHCI_MSM) selects USB_MSM_OTG which has unmet direct dependencies (USB_SUPPORT && USB_PHY && (USB || USB_GADGET) && ARCH_MSM)

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25 11:00:25 -07:00
Arnd Bergmann
8097804eab USB: OHCI: avoid conflicting platform drivers
Like the EHCI driver, OHCI supports a large number of different platform
glue drivers by directly including them, which causes problems with
conflicting macro definitions in some cases. As more ARM architecture
specific back-ends are required to coexist in a single build, we should
split those out into separate drivers. Unfortunately, the infrastructure
for that is still under development, so to give us more time, this uses
a separate *_PLATFORM_DRIVER macro for each ARM specific OHCI backend,
just like we already do on PowerPC and some of the other ARM platforms.

In linux-3.10, only the SPEAr and CNS3xxx back-ends would actually conflict
without this patch, but over time we would get more of them, so this
is a way to avoid having to patch the driver every time it breaks. We
should still split out all back-ends into separate loadable modules,
but that work is only needed to improve code size and cleanliness after
this patch, not for correctness.

While we're here, this fixes the incorrectly sorted error path
for the OMAP1 and OMAP3 backends to ensure we always unregister
the exact set of drivers that were registered before erroring out.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25 10:58:00 -07:00
Arnd Bergmann
c3c683ead3 USB: OMAP: ISP1301 needs USB_PHY
The Kconfig entry for USB_OMAP unconditionally selects USB_ISP1301,
which is now only visible when USB_PHY is also enabled.

This adds an appropriate dependency and enables USB_PHY in the omap1
defconfig, avoiding these build warnings:

warning: (USB_OHCI_HCD && USB_OMAP) selects ISP1301_OMAP which has unmet direct dependencies (USB_SUPPORT && USB_PHY && I2C && ARCH_OMAP_OTG)

Also fix a Makefile typo while we're at it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25 10:58:00 -07:00
Arnd Bergmann
64e98a7981 USB: lpc32xx: ISP1301 needs USB_PHY
The Kconfig entry for USB_LPC32XX unconditionally selects USB_ISP1301,
which is now only visible when USB_PHY is also enabled.

This adds an appropriate dependency and enables USB_PHY in the msm
defconfig, avoiding these build errors:

warning: (USB_LPC32XX) selects USB_ISP1301 which has unmet direct dependencies (USB_SUPPORT && USB_PHY && (USB || USB_GADGET) && I2C)
drivers/built-in.o: In function `usb_hcd_nxp_probe':
drivers/usb/host/ohci-nxp.c:224: undefined reference to `isp1301_get_client'
drivers/built-in.o: In function `lpc32xx_udc_probe':
drivers/usb/gadget/lpc32xx_udc.c:3071: undefined reference to `isp1301_get_client'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Roland Stigge <stigge@antcom.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25 10:58:00 -07:00
Linus Torvalds
0fbd06761f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fix from David Miller:
 "Brown paper bag fix for sparc64"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix missing put_cpu_var() in tlb_batch_add_one() when not batching.
2013-04-24 17:10:18 -07:00
Linus Torvalds
3c71d03a28 This is a last minute revert for the GPIO tree, as Mike
Dunn noticed breakage on some older PXA machines due to
 moving PXA GPIO initcalls to the module_init initlevel.
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Merge tag 'gpio-v3.9-lastminute' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull gpi fix from Linus Walleij:
 "This is a last minute revert for the GPIO tree, as Mike Dunn noticed
  breakage on some older PXA machines due to moving PXA GPIO initcalls
  to the module_init initlevel"

* tag 'gpio-v3.9-lastminute' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  Revert "gpio: pxa: set initcall level to module init"
2013-04-24 17:01:58 -07:00
David S. Miller
f0af97070a sparc64: Fix missing put_cpu_var() in tlb_batch_add_one() when not batching.
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-24 16:52:18 -07:00
Linus Walleij
cf3fa17c20 Revert "gpio: pxa: set initcall level to module init"
This reverts commit 6c7e660a27.

The commit causes breakage on several older PXA machines.

Reported-by: Mike Dunn <mikedunn@newsguy.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-24 21:42:24 +02:00
Bjorn Helgaas
d4f09c5d7f Merge branch 'pci/gavin-msi-cleanup' into next
* pci/gavin-msi-cleanup:
  vfio-pci: Use cached MSI/MSI-X capabilities
  vfio-pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
  PCI: Remove "extern" from function declarations
  PCI: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
  PCI: Drop msi_mask_reg() and remove drivers/pci/msi.h
  PCI: Use msix_table_size() directly, drop multi_msix_capable()
  PCI: Drop msix_table_offset_reg() and msix_pba_offset_reg() macros
  PCI: Drop is_64bit_address() and is_mask_bit_support() macros
  PCI: Drop msi_data_reg() macro
  PCI: Drop msi_lower_address_reg() and msi_upper_address_reg() macros
  PCI: Drop msi_control_reg() macro and use PCI_MSI_FLAGS directly
  PCI: Use cached MSI/MSI-X offsets from dev, not from msi_desc
  PCI: Clean up MSI/MSI-X capability #defines
  PCI: Use cached MSI-X cap while enabling MSI-X
  PCI: Use cached MSI cap while enabling MSI interrupts
  PCI: Remove MSI/MSI-X cap check in pci_msi_check_device()
  PCI: Cache MSI/MSI-X capability offsets in struct pci_dev
  PCI: Use u8, not int, for PM capability offset
  [SCSI] megaraid_sas: Use correct #define for MSI-X capability
2013-04-24 11:37:49 -06:00
Bjorn Helgaas
a9047f24df vfio-pci: Use cached MSI/MSI-X capabilities
We now cache the MSI/MSI-X capability offsets in the struct pci_dev,
so no need to find the capabilities again.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
2013-04-24 11:35:56 -06:00
Bjorn Helgaas
508d1aa602 vfio-pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
PCI_MSIX_FLAGS_BIRMASK is mis-named because the BIR mask is in the
Table Offset register, not the flags ("Message Control" per spec)
register.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
2013-04-24 11:35:56 -06:00
Adrian Thomasset
71d9a2b95f USB: ftdi_sio: enable two UART ports on ST Microconnect Lite
The FT4232H used in the ST Micro Connect Lite has four hi-speed UART ports.
The first two ports are reserved for the JTAG interface.

We enable by default ports 2 and 3 as UARTs (where port 2 is a
conventional RS-232 UART)

Signed-off-by: Adrian Thomasset <adrian.thomasset@st.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:05:30 -07:00
K. Y. Srinivasan
0e27263926 Tools: hv: Fix a checkpatch warning
Fix a checkpatch warning.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:36 -07:00
Olaf Hering
10b637b4c8 tools: hv: skip iso9660 mounts in hv_vss_daemon
fsreeze does not work for iso9660 filesystems. A ENOSUPP may be caught
in the freeze case, but the subsequent thaw call would fail and leads to
a false error.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
Olaf Hering
7b413b6553 tools: hv: use FIFREEZE/FITHAW in hv_vss_daemon
As suggested by Paolo Bonzini, use ioctl instead of calling fsfreeze.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
Olaf Hering
d3d1ee3ab2 tools: hv: use getmntent in hv_vss_daemon
As suggested by Paolo Bonzini, use getmntent instead of parsing output
of mount(1).

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
K. Y. Srinivasan
038336a5b4 Tools: hv: Fix a checkpatch warning
Fix a checkpatch warning.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
Olaf Hering
5edf5ee42a tools: hv: fix checks for origin of netlink message in hv_vss_daemon
Similar to what commit 95a69adab9 ("tools:
hv: Netlink source address validation allows DoS") does in
hv_kvp_daemon, improve checks for origin of netlink connector message.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
Olaf Hering
eb8905b8ff Tools: hv: fix warnings in hv_vss_daemon
This change fixes a few compile errors:

hv_vss_daemon.c:64:15: warning: unknown escape sequence '\/'
hv_vss_daemon.c:64:15: warning: unknown escape sequence '\/'
hv_vss_daemon.c: In function 'vss_operate':
hv_vss_daemon.c:66: warning: 'return' with no value, in function returning non-void
hv_vss_daemon.c: In function 'main':
hv_vss_daemon.c:130: warning: ignoring return value of 'daemon', declared with attribute warn_unused_result
hv_vss_daemon.c: In function 'vss_operate':
hv_vss_daemon.c:47: warning: 'fs_op' may be used uninitialized in this function

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24 09:02:35 -07:00
Josh Boyer
f697036b93 efi: Check EFI revision in setup_efi_vars
We need to check the runtime sys_table for the EFI version the firmware
specifies instead of just checking for a NULL QueryVariableInfo.  Older
implementations of EFI don't have QueryVariableInfo but the runtime is
a smaller structure, so the pointer to it may be pointing off into garbage.

This is apparently the case with several Apple firmwares that support EFI
1.10, and the current check causes them to no longer boot.  Fix based on
a suggestion from Matthew Garrett.

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2013-04-24 16:19:01 +01:00
Borislav Petkov
51f8fbba64 x86, efi: Fix a build warning
Fix this:

arch/x86/boot/compressed/eboot.c: In function ‘setup_efi_vars’:
arch/x86/boot/compressed/eboot.c:269:2: warning: passing argument 1 of ‘efi_call_phys’ makes pointer from integer without a cast [enabled by default]
In file included from arch/x86/boot/compressed/eboot.c:12:0:
/w/kernel/linux/arch/x86/include/asm/efi.h:8:33: note: expected ‘void *’ but argument is of type ‘long unsigned int’

after cc5a080c5d ("efi: Pass boot services variable info to runtime
code").

Reported-by: Paul Bolle <pebolle@tiscali.nl>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2013-04-24 11:57:15 +01:00
Tomi Valkeinen
c84deb9d61 fbdev/sgivwfb: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-04-24 08:41:42 +03:00
Tomi Valkeinen
5171774382 fbdev/vermillion: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Alan Hourihane <alanh@fairlite.demon.co.uk>
2013-04-24 08:41:42 +03:00
Tomi Valkeinen
51fc8e8aab fbdev/sa1100fb: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-04-24 08:41:41 +03:00
Tomi Valkeinen
7b3d1c8241 fbdev/fb-puv3: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
2013-04-24 08:41:41 +03:00
Tomi Valkeinen
47f698a9f2 fbdev/controlfb: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-04-24 08:41:41 +03:00
Tomi Valkeinen
6d28c21fe7 fbdev/omapfb: use vm_iomap_memory()
Use vm_iomap_memory() instead of [io_]remap_pfn_range().
vm_iomap_memory() gives us much simpler API to map memory to userspace,
and reduces possibilities for bugs.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-04-24 08:34:05 +03:00
H Hartley Sweeten
a0eeed4010 staging: comedi: ni_labpc: fix legacy driver build
CONFIG_COMEDI_NI_LABPC_ISA is a tristate option. #if IS_ENABLED()
needs to be used instead of #ifdef in order to build the legacy
specific code in this driver.

The local variable 'board' is not used in labpc_attach(). Remove it.

The labpc_detach() function is only referenced in this file. Make
it static.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 12:55:03 -07:00
Arnd Bergmann
ee5d5499ed usb: phy: tegra: don't call into tegra-ehci directly
Both phy-tegra-usb.c and ehci-tegra.c export symbols used by the other one,
which does not work if one of them or both are loadable modules, resulting
in an error like:

drivers/built-in.o: In function `utmi_phy_clk_disable':
drivers/usb/phy/phy-tegra-usb.c:302: undefined reference to `tegra_ehci_set_phcd'
drivers/built-in.o: In function `utmi_phy_clk_enable':
drivers/usb/phy/phy-tegra-usb.c:324: undefined reference to `tegra_ehci_set_phcd'
drivers/built-in.o: In function `utmi_phy_power_on':
drivers/usb/phy/phy-tegra-usb.c:447: undefined reference to `tegra_ehci_set_pts'

This turns the interface into a one-way dependency by letting the tegra ehci
driver pass two function pointers for callbacks that need to be called by
the phy driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 12:50:38 -07:00
Arnd Bergmann
45efcb2d32 tty/serial/sirf: fix MODULE_DEVICE_TABLE
This fixes building the sirfsorc-uart driver as a loadable module,
which uses an incorrect MODULE_DEVICE_TABLE, by changing the reference to the
correct symbol.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:43:18 -07:00
H Hartley Sweeten
eca7cf7256 staging: comedi: das800: cleanup the cio-das802/16 fifo comments
Cleanup the comments about the cio-das802/16 specific register
defines. This also removes a checkpatch.pl warning about > 80
char lines.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:52 -07:00
H Hartley Sweeten
d24160f83d staging: comedi: das800: rename CamelCase vars in das800_ai_do_cmd()
Rename the CamelCase variables in das800_ai_do_cmd().

For aesthetic reasons, initialize the variables when they are
declared.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:52 -07:00
H Hartley Sweeten
ad5774fcd2 staging: comedi: das800: tidy up the private data
For aesthetic reasons, change the 'do_bits' type to unsigned int
to match the subdevice s->state. and change the 'forever' flag
to a bool.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:52 -07:00
H Hartley Sweeten
7f340859f2 staging: comedi: das800: tidy up das800_interrupt()
Rename the CamelCase variable 'dataPoint'.

Cleanup some of the comments and fix the > 80 char lines.

Use the das800_ai_get_sample() helper to get the analog input data.

Change the fifo flags into bools and make sure to check for the
fifo overflow while reading the samples. This also fixes the overflow
detection for 12-bit resolutions. In the current code the 'dataPoint'
value has been shifted and masked. This could result in fifo_overflow
being invalidly true.

Remove the need for the 'thisboard' pointer by using the subdevice
'maxdata' to determine the sample size.

The devpriv->forever flag is really a bool. Treat it as such.

Remove the comedi_error() messages. The user will get the error
condition back in the async event. The message is just added noise.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
b4780a3afb staging: comedi: das800: tidy up das800_ai_insn_read()
Introduce a couple helper functions to read the 16-bit analog input
sample and to wait for the analog conversion to complete.

Tidy up the das800_ai_insn_read() function by using the new helpers.
Also, remove the need for 'thisboard' in the function by checking the
subdevice 'maxdata' variable to determine the analog input resolution.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
e245b6d126 staging: comedi: das800: tidy up das800_di_insn_bits()
For digital input subdevices, the (*insn_bits) function simply needs
to return the status of the input channels in data[1].

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
26234771c1 staging: comedi: das800: tidy up das800_do_insn_bits()
Use a couple local variables, mask and bits, to clarify this function.

Its only necessary to update the outputs if the mask indicates that
the bits are changing. Modify this function accordingly. Also, use
the subdevice 'state' variable to hold the actual output channel
state instead of needing to get it from the private data and shift
it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
264601c231 staging: comedi: das800: remove extra divisor calculation call
The comedi core always calls the (*do_cmdtest) function before it
calls the (*do_cmd) function. The divisors were already calculated
in das800_ai_do_cmdtest(), it is not necessary to calculate them
again in das800_ai_do_cmd().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
57d1ebf795 staging: comedi: das800: rename {enable,disable}_das800
For aesthetic reasons, rename these functions to match the namespace
of the rest of the driver. Also, remove the unnecessary comments.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:51 -07:00
H Hartley Sweeten
d7427345e8 staging: comedi: das800: tidy up subdevice init
For aesthetic reasons, rename some of the subdevice functions
to help with greps and add some whitespace to the subdevice init.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:50 -07:00
H Hartley Sweeten
f05ffb6e12 staging: comedi: das800: allow attaching without interrupt support
Interrupts are only requires for the analog input async command support.

Allow the driver to attach to the board if the request_irq() fails.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:45 -07:00
H Hartley Sweeten
77630119ba staging: comedi: das800: interrupts are required for async command support
Interrupt support is optional with this driver. Only hook up the async
command support for the analog input subdevice if the user requested an
interrupt when attaching to the board. This also allows removing the
extra test in das800_ai_do_cmd().

For aesthetic reasons, add some whitespace to the subdevice init.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:40 -07:00
H Hartley Sweeten
2bc405831d staging: comedi: das800: tidy up das800_ai_do_cmdtest()
For aesthetic reasons, move some of the local variables to the place
they are actually used. Also, rename the CamelCase 'startChan' local
variable.

Remove the unnecessary '()' around the variables passed in the
i8253_cascade_ns_to_timer_2div() call.

Add a local variable, 'next', to hold the cmd->chanlist[i] value
used in the loop that checks the channel/gain list.

Replace the comedi_error() with dev_dbg() and shorten the messages
a bit.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:39 -07:00
H Hartley Sweeten
808cea5a5d staging: comedi: das800: remove 'volatile' on private data variables
As indicated by checkpatch.pl, "WARNING: Use of volatile is usually
wrong: ...". The variables in the private data that are marked
volatile don't need to be. Remove the volatile.

Also, cleanup the comments to avoid > 80 char lines.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:39 -07:00
H Hartley Sweeten
c1a5917157 staging: comedi: das800: cleanup the boardinfo
For aesthetic reasons, name the enum used for the boardinfo indexes
and change them to uppercase with the prefix BOARD_.

Add some whitespace to the boardinfo declaration and use the enum
values to clarify the table.

Tidy up the das800_probe() function and only output a dev_dbg()
message if a board model is actually probed. If the user provided
the correct boardname when attaching to this driver the message
is just added noise.

For the 'default' case when checking the proded id, output the
id_bits and return -EINVAL. It should not be assumed that unknown
boards will work with this driver.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:38 -07:00
H Hartley Sweeten
b678075f9a staging: comedi: das800: cleanup range table declarations
Use the BIP_RANGE and UNI_RANGE macros to define the range
tables instead of the more generic RANGE macro.

Tidy up the whitespace of the tables.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-23 10:41:38 -07:00