Commit Graph

3208 Commits

Author SHA1 Message Date
Tomoya MORINAGA
aac6c0b0fd pch_uart: fix uart clock setting issue
Currently, uart clock is not set correctly.
This patch fixes the issue.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:22:03 -08:00
Tomoya MORINAGA
23877fdc6d pch_uart : Use dev_xxx not pr_xxx
For easy to understad which port the message is out,
replace pr_xxx with dev_xxx.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:22:03 -08:00
Tomoya MORINAGA
1822076cf3 pch_uart : Reduce memcpy
Reduce memcpy for performance improvement.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:22:03 -08:00
Tomoya MORINAGA
7e46132965 pch_uart: add spin_lock_init
Currently, spin_lock is not initialized.
Thus, add spin_lock_init().

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:22:03 -08:00
Tomoya MORINAGA
da3564ee02 pch_uart: add multi-scatter processing
Currently, this driver can handle only single scatterlist.
Thus, it can't send data beyond FIFO size.

This patch enables this driver can handle multiple scatter list.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 17:22:02 -08:00
Tobias Klauser
44ed76b78e tty: serial: altera_jtaguart: Fixup type usage of port flags
port->flags is of type upf_t, which corresponds to UPF_* flags.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:50:04 -08:00
Tobias Klauser
72af4762ee tty: serial: altera_jtaguart: Support getting mapbase and IRQ from resources
This will make it easier to get the driver to support device tree. The
old platform data method is still supported though.

Also change the driver to use only one platform device per port.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:50:04 -08:00
Tobias Klauser
3231f07507 tty: serial: altera_jtaguart: Remove unused function early_altera_jtaguart_setup
This is not even used in nios2 arch code anymore.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:50:04 -08:00
Tobias Klauser
2314a0f667 tty: serial: altera_jtaguart: Don't use plain integer as NULL pointer
This fixes a sparse warning.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:50:03 -08:00
Feng Tang
f023eab379 serial: mfd: add a module parameter for setting each port's working mode
The three identical uart ports can work either in DMA or PIO mode. Adding such
a module parameter "hsu_dma_enable" will enable user to chose working modes for
each port. If the mfd driver is built in kernel, adding a "mfd.hsu_dma_enable=x"
in kernel command line has the same effect.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:49:00 -08:00
Feng Tang
085a4f758f serial: mfd: remove the TX full-empty interrupts workaround
In A0 stepping, TX half-empty interrupt is not working, so have to
use the full-empty interrupts whose performance will be 15% lower.
Now re-enable the half-empty interrrupt after it is enabled in
silicon.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-22 15:49:00 -08:00
Kukjin Kim
9c0ff728b8 tty: Change dependency of ARCH_EXYNOS4
This patch changes dependency of ARCH_EXYNOS4 from ARCH_S5PV310
according to the change of ARCH name, EXYNOS4.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-02-22 13:51:16 +09:00
Linus Torvalds
bc3adfc670 Merge branch 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
* 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: make sure MAYDAY_INITIAL_TIMEOUT is at least 2 jiffies long
  workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'
  workqueue: wake up a worker when a rescuer is leaving a gcwq
2011-02-18 12:36:06 -08:00
Alan Cox
6caa76b778 tty: now phase out the ioctl file pointer for good
Only oddities here are a couple of drivers that bogusly called the ldisc
helpers instead of returning -ENOIOCTLCMD. Fix the bug and the rest goes
away.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:59:56 -08:00
Alan Cox
20b9d17715 tiocmset: kill the file pointer argument
Doing tiocmget was such fun we should do tiocmset as well for the same
reasons

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:52:43 -08:00
Alan Cox
60b33c133c tiocmget: kill off the passing of the struct file
We don't actually need this and it causes problems for internal use of
this functionality. Currently there is a single use of the FILE * pointer.
That is the serial core which uses it to check tty_hung_up_p. However if
that is true then IO_ERROR is also already set so the check may be removed.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:47:33 -08:00
Tobias Klauser
2780ad42f5 tty: serial: altera_uart: Use port->regshift to store bus shift
Use the regshift member of struct uart_port to store the address stride
from platform data. This way we can save one dereference per call of
altera_uart_readl and altera_uart_writel.

This also allows us to use the driver without platform data, which is
needed for device tree support in the Nios2 port.

Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:31:58 -08:00
Tobias Klauser
e96fabd879 tty: serial: altera_uart: Handle pdev->id == -1 in altera_uart_remove
Commit 6b5756f176 introduced the
possibility for pdev->id being -1 but the change was not done equally in
altera_uart_remove. This patch fixes this.

Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:31:58 -08:00
Viktar Palstsiuk
42bd7a4f68 atmel_serial: enable PPS support
Enables PPS support in atmel serial driver to make PPS API working.

Signed-off-by: Viktar Palstsiuk <viktar.palstsiuk@promwad.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:26:12 -08:00
Niranjana Vishwanathapura
daaf6ff42d tty: Add msm_smd_tty driver
msm_smd_tty driver provides tty device interface
to 'DS' and 'GPSNMEA' streaming SMD ports.

Cc: Brian Swetland <swetland@google.com>
Signed-off-by: Niranjana Vishwanathapura <nvishwan@codeaurora.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:25:38 -08:00
Yin Kangkai
0d0389e541 serial: change the divisor latch only when prescalar actually changed
In 8250.c original ns16550 autoconfig code, we change the divisor latch when
we goto to high speed mode, we're assuming the previous speed is legacy. This
some times is not true.

For example in a system with both CONFIG_SERIAL_8250 and
CONFIG_SERIAL_8250_PNP set, in this case, the code (autoconfig) will be called
twice, one in serial8250_init/probe() and the other is from
serial_pnp_probe. When serial_pnp_probe calls the autoconfig for NS16550A,
it's already in high speed mode, change the divisor latch (quot << 3) in this
case will make the UART console garbled.

CC: Greg Kroah-Hartman <greg@kroah.com>
CC: David Woodhouse <dwmw2@infradead.org>
CC: linux-kernel@vger.kernel.org
CC: stable@kernel.org
Signed-off-by: Yin Kangkai <kangkai.yin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:23:50 -08:00
Yin Kangkai
95926d2db6 serial: also set the uartclk value in resume after goes to highspeed
For any reason if the NS16550A was not work in high speed mode (e.g. we hold
NS16550A from going to high speed mode in autoconfig_16550a()), now we are
resume from suspend, we should also set the uartclk to the correct
value. Otherwise it is still the old 1843200 and that will bring issues.

CC: Greg Kroah-Hartman <greg@kroah.com>
CC: David Woodhouse <dwmw2@infradead.org>
CC: linux-kernel@vger.kernel.org
CC: stable@kernel.org
Signed-off-by: Yin Kangkai <kangkai.yin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:23:49 -08:00
Russ Gorby
8115be0146 serial: ifx6x60: minor cleanup
renamed spi_driver variable to not be h/w specific
set driver name to use DRVNAME define
removed commented-out define

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:15 -08:00
Russ Gorby
2aff8d90a0 serial: ifx6x60: probe routine needs to call spi_setup
The probe routine should call spi_setup() to configure
the SPI bus so it can properly communicate with the device.
E.g. the device operates in SPI mode 1.

Called spi_setup to configure SPI mode, max_speed_hz, and bpw

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:15 -08:00
Russ Gorby
1b79b44057 serial: ifx6x60: set SPI max_speed_hz based on platform type
Platforms containing the 6260 can run up to 25Mhz.

For these platforms set max_speed_hz to 25Mhz.

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:14 -08:00
Russ Gorby
f089140ea7 serial: ifx6x60: changed internal bpw from boolean to int
driver should support 32bit SPI transfers. The boolean variable
only allowed 8/16.

Changed to support 8/16/32 for future enabling
of 32 bpw.

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:14 -08:00
Russ Gorby
5fc3249520 serial: ifx6x60: dma_alloc_coherent must use parent dev
This driver is a SPI protocol driver and has no DMA ops
associated with the device so the call will fail. Furthermore,
the DMA allocation made here will be used by the SPI
controller driver (parent dev) so it makes sense to
pass that device instead.

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:14 -08:00
Russ Gorby
b68f23b24e serial: ifx6x60: fixed call to tty_port_init
The port ops must be set AFTER calling port init as that function
zeroes the structure

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-17 11:16:14 -08:00
Jesper Juhl
f95497d9df serial, pch uart: Remove duplicate inclusion of linux/pci.h header
Only include linux/pci.h once in drivers/tty/serial/pch_uart.c

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-17 17:39:37 +01:00
Tejun Heo
58a69cb47e workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'
There are two spellings in use for 'freeze' + 'able' - 'freezable' and
'freezeable'.  The former is the more prominent one.  The latter is
mostly used by workqueue and in a few other odd places.  Unify the
spelling to 'freezable'.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Steven Whitehouse <swhiteho@redhat.com>
2011-02-16 17:48:59 +01:00
Linus Torvalds
048f039f3e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: set flow handler for secondary interrupt controller of 5249
  m68knommu: remove use of IRQ_FLG_LOCK from 68360 platform support
  m68knommu: fix dereference of port.tty
  m68knommu: add missing linker __modver section
  m68knommu: fix mis-named variable int set_irq_chip loop
  m68knommu: add optimize memmove() function
  m68k: remove arch specific non-optimized memcmp()
  m68knommu: fix use of un-defined _TIF_WORK_MASK
  m68knommu: Rename m548x_wdt.c to m54xx_wdt.c
  m68knommu: fix m548x_wdt.c compilation after headers renaming
  m68knommu: Remove dependencies on nonexistent M68KNOMMU
2011-02-15 17:51:18 -08:00
Greg Ungerer
bc0c36d3c8 m68knommu: fix dereference of port.tty
The struct_tty associated with a port is now a direct pointer
from within the local private driver info struct. So fix all uses
of it.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-02-16 09:43:18 +10:00
Jesper Juhl
18fd7315cc Freescale STMP37XX/STMP378X Application UART driver: remove duplicate linux/device.h include
Do not include linux/device.h twice in drivers/tty/serial/mxs-auart.c .
Once is enough.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-02-15 18:35:42 +01:00
Paul Mundt
18e9550273 Merge branch 'sh/st-integration' into sh-latest 2011-02-15 16:48:28 +09:00
Sascha Hauer
f19693a17c Merge commit 'v2.6.38-rc4' into imx-for-2.6.39
Conflicts:
	arch/arm/mach-mxs/clock-mx28.c

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-02-11 08:33:14 +01:00
Sonic Zhang
0f66e50af5 serial: bfin_5xx: split uart RX lock from uart port lock to avoid deadlock
The RX lock is used to protect the RX buffer from concurrent access in DMA
mode between the timer and RX interrupt routines.  It is independent from
the uart lock which is used to protect the TX buffer.  It is possible for
a uart TX transfer to be started up from the RX interrupt handler if low
latency is enabled.  So we need to split the locks to avoid deadlocking in
this situation.

In PIO mode, the RX lock is not necessary because the handle_simple_irq
and handle_level_irq functions ensure driver interrupt handlers are called
once on one core.

And now that the RX path has its own lock, the TX interrupt has nothing to
do with the RX path, so disabling it at the same time.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:44:54 -08:00
Ben Hutchings
3e517f4b1d 68360serial: Plumb in rs_360_get_icount()
Commit 0587102cf9 replaced a direct
implementation of SIOCGICOUNT with an implementation of
tty_operations::get_icount, but it did not actually set
rs_360_ops.get_icount.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@kernel.org [2.6.37]
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:44:23 -08:00
Tomoya MORINAGA
380042f2db serial: pch_uart: revert Kconfig for non-DMA mode
PCH_DMA is not always enabled when a user uses PCH_UART.
Since overhead of DMA is not small, in case of low frequent
communication, without DMA is better.
Thus, "select PCH_DMA" and DMADEVICES are unnecessary

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:19:33 -08:00
Tomoya MORINAGA
4564e1ef21 serial: pch_uart: support new device ML7213
Support ML7213 device of OKI SEMICONDUCTOR.
ML7213 is companion chip of Intel Atom E6xx series for IVI(In-Vehicle Infotainment).
ML7213 is completely compatible for Intel EG20T PCH.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:18:33 -08:00
Tejun Heo
f094298bae 68328serial: remove unsed m68k_serial->tqueue_hangup
m68k_serial->tqueue_hangup is unused.  Remove it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:16:49 -08:00
Yin Kangkai
5933a161ab serial-core: reset the console speed on resume
On some platforms, we need to restore the console speed on resume even
it was not suspended (no_console_suspend), and on others we don't have
to do that.

So don't care about the "console_suspend_enabled" and unconditionally
reset the console speed if it is a console.

This is actually a redo of ba15ab0 (Set proper console speed on resume
if console suspend is disabled) from Deepak Saxena.  I also tried to
investigate more to find out if this change will break others, here is
what I've found out:

commit 891b9dd107
Author: Jason Wang <jason77.wang@gmail.com>
    serial-core: restore termios settings when resume console ports

commit ca2e71aa8c
Author: Jason Wang <jason77.wang@gmail.com>
    serial-core: skip call set_termios/console_start when no_console_suspend

commit 4547be7809
Author: Stanislav Brabec <sbrabec@suse.cz>
    serial-core: resume serial hardware with no_console_suspend

commit ba15ab0e8d
Author: Deepak Saxena <dsaxena@laptop.org>
    Set proper console speed on resume if console suspend is disabled

from ba15ab0, we learned that, even if the console suspend is disabled
(when no_console_suspend is set), we may still need to "reset the port
to the state it was in before we suspended."

Then with 4547be7, this piece of code is removed.

And then Jason Wang added that back in ca2e71a and 891b9dd, to fix
some breakage on OMAP3EVM platform. From ca2e71a we learned that the
"set_termios" things is actually needed by both console is suspended
and not suspended.

That's why I removed the console_suspended_enabled condition, and only
call console_start() when we actually suspeneded it.

I also noticed in this thread:
http://marc.info/?t=129079257100004&r=1&w=2, which talked about on
some platforms, UART HW will be cut power whether or not we set
no_console_suspend, and then on resume it does not work quite well. I
have a similar HW, and this patch fixed this issue, don't know if this
patch also works on their platforms.

[Update: Stanislav tested this patch on Zaurus and reported it improves the
situation. Thanks.]

CC: Greg KH <greg@kroah.com>
CC: Deepak Saxena <dsaxena@laptop.org>
CC: Jason Wang <jason77.wang@gmail.com>
CC: Stanislav Brabec <sbrabec@suse.cz>
CC: Daniel Drake <dsd@laptop.org>
Signed-off-by: Yin Kangkai <kangkai.yin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:14:00 -08:00
Dan Carpenter
d8653d305e serial: mrst_max3110: make buffer larger
This is used to store the spi_device ->modalias so they have to be the same
size.  SPI_NAME_SIZE is 32.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:13:17 -08:00
Jarkko Nikula
78841462d7 serial: omap-serial: Enable the UART wake-up bits always
OMAP can do also dynamic idling so wake-up enable register should be set
also while system is running. If UART_OMAP_WER is not set, then for instance
the RX activity cannot wake up the UART port that is sleeping.

This RX wake-up feature was working when the 8250 driver was used instead
of omap-serial. Reason for this is that the 8250 doesn't set the
UART_OMAP_WER and then arch/arm/mach-omap2/pm34xx.c ends up saving and
restoring the reset default which is the same than value
OMAP_UART_WER_MOD_WKUP here.

Fix this by moving the conditional UART_OMAP_WER write from serial_omap_pm
into serial_omap_startup where wake-up bits are set unconditionally.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 14:10:22 -08:00
Thomas Weber
364a6ece62 OMAP: Enable Magic SysRq on serial console ttyOx
Magic SysRq key is not working for OMAP on new serial
console ttyOx because SUPPORT_SYSRQ is not defined
for omap-serial.

This patch defines SUPPORT_SYSRQ in omap-serial and
enables handling of Magic SysRq character.

Further there is an issue of losing first break character.
Removing the reset of the lsr_break_flag fixes this issue.

Signed-off-by: Thomas Weber <weber@corscience.de>
Acked-by: Govindraj.R <govindraj.raja@ti.com>
Tested-by: Manjunath G Kondaiah <manjugk@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 11:43:11 -08:00
Russ Gorby
2f1522eccb serial: ifx6x60: expanded info available from platform data
Some platform attributes (e.g. max_hz, use_dma) were being intuited
from the modem type. These things should be specified by the platform
data.

Added max_hz, use_dma to ifx_modem_platform_data definition,
replaced is_6160 w/ modem_type, and changed clients accordingly

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 11:43:10 -08:00
Feng Tang
a5f4dbf0ae serial: mfd: remove the timeout workaround for A0
This is kind of a revert for commit 669b7a0938 "hsu: add a periodic
timer to check dma rx channel", which is a workaround for a bug in A0
stepping silicon, where a dma rx data timeout is missing for some case.
Since new silicon has fixed it and the old version is phasing out, no
need to carry on it any more.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 11:40:46 -08:00
Vasiliy Kulikov
940f3be405 tty: serial: bfin_sport_uart: fix signedness error
sport->port.irq is unsigned, check for <0 doesn't make sense.
Explicitly cast it to int to check for error.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-02-03 11:40:46 -08:00
Paul Mundt
17292ecc07 Merge branch 'sh/urgent' into sh-latest 2011-02-01 19:38:49 +09:00
Linus Torvalds
abfa44b5fd Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  tty/serial: fix apbuart build
  n_hdlc: fix read and write locking
  serial: unbreak billionton CF card
  tty: use for_each_console() and WARN() on sysfs failures
  vt: fix issue when fbcon wants to takeover a second time.

Fix up trivial conflict in drivers/tty/tty_io.c
2011-02-01 08:05:19 +10:00
Paul Mundt
6b620478e5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into common/serial-rework 2011-01-26 18:23:27 +09:00
Torben Hohn
ac751efa6a console: rename acquire/release_console_sem() to console_lock/unlock()
The -rt patches change the console_semaphore to console_mutex.  As a
result, a quite large chunk of the patches changes all
acquire/release_console_sem() to acquire/release_console_mutex()

This commit makes things use more neutral function names which dont make
implications about the underlying lock.

The only real change is the return value of console_trylock which is
inverted from try_acquire_console_sem()

This patch also paves the way to switching console_sem from a semaphore to
a mutex.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: make console_trylock return 1 on success, per Geert]
Signed-off-by: Torben Hohn <torbenh@gmx.de>
Cc: Thomas Gleixner <tglx@tglx.de>
Cc: Greg KH <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-26 10:50:06 +10:00
David Brown
c243e52843 Merge branch 'msm-uart' into for-next
* msm-uart:
  serial: msm: Add support for UARTDM cores
  msm: Add name field to UART resources
2011-01-24 11:16:43 -08:00
Russell King
82e6923e18 ARM: lh7a40x: remove unmaintained platform support
lh7a40x has only been receiving updates for updates to generic code.
The last involvement from the maintainer according to the git logs was
in 2006.  As such, it is a maintainence burden with no benefit.

This gets rid of two defconfigs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-24 19:05:19 +00:00
Randy Dunlap
fed7bb324c tty/serial: fix apbuart build
Fix build errors by selecting SERIAL_CORE:

ERROR: "uart_register_driver" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_write_wakeup" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_update_timeout" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_get_divisor" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_get_baud_rate" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_add_one_port" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_unregister_driver" [drivers/tty/serial/apbuart.ko] undefined!
ERROR: "uart_remove_one_port" [drivers/tty/serial/apbuart.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-22 19:15:02 -08:00
Pavel Machek
d0694e2aeb serial: unbreak billionton CF card
Unbreak Billionton CF bluetooth card. This actually fixes a regression
on zaurus.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-22 19:15:01 -08:00
Linus Torvalds
8d99641f6c Merge branch 'akpm'
* akpm:
  kernel/smp.c: consolidate writes in smp_call_function_interrupt()
  kernel/smp.c: fix smp_call_function_many() SMP race
  memcg: correctly order reading PCG_USED and pc->mem_cgroup
  backlight: fix 88pm860x_bl macro collision
  drivers/leds/ledtrig-gpio.c: make output match input, tighten input checking
  MAINTAINERS: update Atmel AT91 entry
  mm: fix truncate_setsize() comment
  memcg: fix rmdir, force_empty with THP
  memcg: fix LRU accounting with THP
  memcg: fix USED bit handling at uncharge in THP
  memcg: modify accounting function for supporting THP better
  fs/direct-io.c: don't try to allocate more than BIO_MAX_PAGES in a bio
  mm: compaction: prevent division-by-zero during user-requested compaction
  mm/vmscan.c: remove duplicate include of compaction.h
  memblock: fix memblock_is_region_memory()
  thp: keep highpte mapped until it is no longer needed
  kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT
2011-01-20 17:02:14 -08:00
Linus Torvalds
fc887b15d9 Merge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  tty: update MAINTAINERS file due to driver movement
  tty: move drivers/serial/ to drivers/tty/serial/
  tty: move hvc drivers to drivers/tty/hvc/
2011-01-20 16:39:23 -08:00
Greg Kroah-Hartman
ab4382d274 tty: move drivers/serial/ to drivers/tty/serial/
The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-13 12:10:18 -08:00