One point is to have less places where we actually need tty pointer.
The other is that low_latency is bound to buffer processing and
buffers are now in tty_port. So it makes sense to move low_latency to
tty_port too.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_string this time.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_char is the next one to proceed. This one is used all
over the code, so the patch is huge.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty pointer in
many call sites. Only tty_port will be needed and hence no more
tty_port_tty_get calls in those paths.

Now 4 string flipping ones are on turn:
* tty_insert_flip_string_flags
* tty_insert_flip_string_fixed_flag
* tty_prepare_flip_string
* tty_prepare_flip_string_flags
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty pointer in
many call sites. Only tty_port will be needed and hence no more
tty_port_tty_get calls in those paths.

Here we start with tty_buffer_request_room.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

* DT binding for arc-uart
* With alll the bits in place we can now use DT probing.

Note that there's a bit of kludge right now because earlyprintk portion
of driver can't use the DT infrastrcuture to get resoures/plat_data.
This requires some infrastructre changes to of_flat_ framework
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

* is_emulated is now 1st element, rather than last
* also tucked all platform data refs together
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This is in preparation for devicetree based probing, where earlyprintk
won't have access to DT serial aliases which the normal probe would
absolutely rely on.
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

probe routine could index into port[] with -ve index. The check in
arc_uart_init_one() was too late.

This came to light when trying to port driver to CONFIG_OF, where
bydefault of-core code sets -ve platform dev id and in absence of
DT serial aliases, driver would use the -ve index.
Signed-off-by: NVineet Gupta <vgupta@synopsys.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

NVIDIA's Tegra has multiple UART controller which supports:
- APB DMA based controller fifo read/write.
- End Of Data interrupt in incoming data to know whether end
  of frame achieve or not.
- HW controlled RTS and CTS flow control to reduce SW overhead.

Add serial driver to use all above feature.
Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Reviewed-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

devm_* APIs are device managed and make cleanup and exit code simpler
and easier.

Cc: Shawn Guo <shawn.guo@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Silences checkpatch warnings.

Cc: Shawn Guo <shawn.guo@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Silences the following checkpatch error:
ERROR: that open brace { should be on the previous line

Cc: Shawn Guo <shawn.guo@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Silences the following checkpatch warning:
WARNING: Use #include <linux/io.h> instead of <asm/io.h>

Cc: Shawn Guo <shawn.guo@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed checkpatch errors and warnings related to incorrect spacing.

Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The address S3C_VA_UART is a statically ioremapped address. The driver
should not be using this. Instead, the driver should setup a mapping
during probe.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Detected by cppcheck:
[others/linux/drivers/tty/serial/mxs-auart.c:553]: (style) Same expression on both sides of '||'.
Signed-off-by: NThomas Jarosch <thomas.jarosch@intra2net.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NKevin Cernekee <cernekee@gmail.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now that support for RM9000 and platforms based on it has been removed,
remove the serial driver for it as well.  It's really only been a quirk
for an almost 8250 compatible UART anyway.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

 drivers/tty/serial/8250/8250.c  | 70 +----------------------------------------
 drivers/tty/serial/8250/Kconfig |  9 ------
 include/linux/serial_core.h     |  1 -
 3 files changed, 1 insertion(+), 79 deletions(-)
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

  before goto out5,  soft, control, serial are all assigned to idd
  after finish call ioc4_serial_remove_one, all resources are released
  we need return instead of go on, or double free
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

All the call to gsm->output should be in the tx_lock,
that could avoid potential race from MUX level. But
we have no tx_lock in gsm_send.

This patch is to add tx_lock in gsm_send.
Signed-off-by: Nxiaojin <jin.xiao@intel.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

CSR SiRFmarco's UART IP is same with SiRFprimaII except that
it has two more uart ports.
this patch makes the old driver support new SiRFmarco as well:
1. add .compatible = "sirf,marco-uart" to OF match table
2. add two ports in the port table
3. take spin_lock in isr to avoid the conflict of threads opening
uart on CPU1 and isr running on CPU0.
For 3, we did see some problems on SiRFmarco as SiRFmarco is a
SMP SoC but the old SiRFprimaII is UP.
Signed-off-by: NBarry Song <Baohua.Song@csr.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

tty: vt/Makefile: set the variables to static

In the file drivers/tty/vt/defkeymap.c generated by command
loadkeys --mktable defkeymap.map > defkeymap.c
the 6 variables: shift_map, altgr_map, ctrl_map, shift_ctrl_map, alt_map,
and ctrl_alt_map should be static because they are used only in this file.
There is no reason to remove the static by sed command.
Signed-off-by: NCong Ding <dinggnu@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The serial core is using power states lifted from ACPI for no
good reason. Remove this reference from the documentation and
alter all users to use an enum specific to the serial core
instead, and define it in <linux/serial_core.h>.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NAlan Cox <alan@linux.intel.com>
Reviewed-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Some systems require the additional communication functionality of a
9-bit UART. For that we could use the "stick" (mark/space) parity
bit supported on omap serial device. When is set, if PARODD is set the
parity bit is always 1; if PARODD is not set, then the parity bit is
always 0.
Signed-off-by: NEnric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix call to line discipline receive_buf by synclink drivers.
Dummy flag buffer argument is ignored by N_HDLC line discipline but might
be of insufficient size if accessed by a different line discipline
selected by mistake. flag buffer allocation now matches max size of data
buffer. Unused char_buf buffers are removed.
Signed-off-by: NPaul Fulghum <paulkf@microgate.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Jonathan Woithe posted an out of tree enabler/control module for these
cards.  Lift the relevant identifiers and put them in the 8250_pci driver
along with code used to control custom registers on these cards.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NJonathan Woithe <jwoithe@just42.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Pull ARM fixes from Russell King.

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7616/1: cache-l2x0: aurora: Use writel_relaxed instead of writel
  ARM: 7615/1: cache-l2x0: aurora: Invalidate during clean operation with WT enable
  ARM: 7614/1: mm: fix wrong branch from Cortex-A9 to PJ4b
  ARM: 7612/1: imx: Do not select some errata that depends on !ARCH_MULTIPLATFORM
  ARM: 7611/1: VIC: fix bug in VIC irqdomain code
  ARM: 7610/1: versatile: bump IRQ numbers
  ARM: 7609/1: disable errata work-arounds which access secure registers
  ARM: 7608/1: l2x0: Only set .set_debug on PL310 r3p0 and earlier

Pull EDAC fixes from Borislav Petkov:
 "Two error path fixes causing a crash and a Kconfig fix for an issue
  which spilled all EDAC suboptions into the 'Device Drivers' menu."

* tag 'edac_fixes_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: Cleanup device deregistering path
  EDAC: Fix EDAC Kconfig menu
  EDAC: Fix kernel panic on module unloading

The check for a pmd being in the process of being split was dropped by
mistake by commit d10e63f2 ("mm: numa: Create basic numa page
hinting infrastructure"). Put it back.
Reported-by: NDave Jones <davej@redhat.com>
Debugged-by: NHillf Danton <dhillf@gmail.com>
Acked-by: NAndrea Arcangeli <aarcange@redhat.com>
Acked-by: NMel Gorman <mgorman@suse.de>
Cc: Kirill Shutemov <kirill@shutemov.name>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit 3a50597d ("KEYS: Make the session and process keyrings
per-thread") removed the definition of the thread_group_cred structure,
but left a now unused pointer in struct cred.
Signed-off-by: NMarc Dionne <marc.c.dionne@gmail.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull ARM SoC fixes from Olof Johansson:
 "People are back from the holiday breaks, and it shows.  Here are a
  bunch of fixes for a number of platforms:
   - A couple of small fixes for Nomadik
   - A larger set of changes for kirkwood/mvebu
     - uart driver selection, dt clocks, gpio-poweroff fixups, a few
       __init annotation fixes and some error handling improvement in
       their xor dma driver.
   - i.MX had a couple of minor fixes (and a critical one for flexcan2
     clock setup)
   - MXS has a small board fix and a framebuffer bugfix
   - A set of fixes for Samsung Exynos, fixing default bootargs and some
     Exynos5440 clock issues
   - A set of OMAP changes including PM fixes and a few sparse warning
     fixups

  All in all a bit more positive code delta than we'd ideally want to
  see here, mostly from the OMAP PM changes, but nothing overly crazy."

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
  ARM: clps711x: Fix bad merge of clockevents setup
  ARM: highbank: save and restore L2 cache and GIC on suspend
  ARM: highbank: add a power request clear
  ARM: highbank: fix secondary boot and hotplug
  ARM: highbank: fix typos with hignbank in power request functions
  ARM: dts: fix highbank cpu mpidr values
  ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
  pinctrl: mvebu: make pdma clock on dove mandatory
  ARM: Dove: Add pinctrl clock to DT
  dma: mv_xor: fix error handling for clocks
  dma: mv_xor: fix error handling of mv_xor_channel_add()
  arm: mvebu: Add missing ; for cpu node.
  arm: mvebu: Armada XP MV78230 has only three Ethernet interfaces
  arm: mvebu: Armada XP MV78230 has two cores, not one
  clk: mvebu: Remove inappropriate __init tagging
  ARM: Kirkwood: Use fixed-regulator instead of board gpio call
  ARM: Kirkwood: Fix missing sdio clock
  ARM: Kirkwood: Switch TWSI1 of 88f6282 to DT clock providers
  ...

Pull drm update from Dave Airlie:
 "Exynos and Radeon mostly, with a dma-buf and ttm fix thrown in.

  It's a bit big but its mostly exynos license fix ups and I'd rather
  not hold those up since its legally stuff.

  Radeon has a couple of fixes from dma engine work, TTM is just a
  locking fix, and dma-buf fix has been hanging around and I finally got
  a chance to review it."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (30 commits)
  drm/ttm: fix fence locking in ttm_buffer_object_transfer
  drm/prime: drop reference on imported dma-buf come from gem
  drm/radeon: add quirk for d3 delay during switcheroo poweron for apple macbooks
  drm/exynos: move finish page flip to a common place
  drm/exynos: fimd: modify condition in fimd resume
  drm/radeon: fix DMA CS parser for r6xx linear copy packet
  drm/radeon: split r6xx and r7xx copy_dma functions
  drm/exynos: Use devm_clk_get in exynos_drm_gsc.c
  drm/exynos: Remove redundant NULL check in exynos_drm_gsc.c
  drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_gsc.c
  drm/exynos: Use devm_clk_get in exynos_drm_rotator.c
  drm/exynos: Remove redundant NULL check in exynos_drm_rotator.c
  drm/exynos: Remove unnecessary devm_* freeing APIs in exynos_drm_rotator.c
  drm/exynos: Use devm_clk_get in exynos_drm_fimc.c
  drm/exynos: Remove redundant NULL check
  drm/exynos: Remove explicit freeing using devm_* APIs in exynos_drm_fimc.c
  drm/exynos: Use devm_kzalloc in exynos_drm_ipp.c
  drm/exynos: fix gem buffer allocation type checking
  drm/exynos: remove needless parenthesis.
  drm/exynos: fix incorrect interrupt induced by m2m operation.
  ...

Merge tag 'omap-for-v3.8-rc2/fixes-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:
The biggest change is a fix to deal with different power state
on omap2 registers that causes issues trying to use common PM code.
Also fix few incorrect registers, and an issue for omap1 USB, and
few sparse fixes for issues that sneaked in with all the clean-up.

* tag 'omap-for-v3.8-rc2/fixes-signed-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
  ARM: OMAP1: fix USB configuration use-after-release
  ARM: OMAP2/3: PRM: fix bogus OMAP2xxx powerstate return values
  ARM: OMAP3: clock data: Add missing enable/disable for EMU clock
  ARM: OMAP4: PRM: Correct wrong instance usage for reading reset sources
  ARM: OMAP4: PRM: fix RSTTIME and RSTST offsets
  ARM: OMAP4: PRM: Correct reset source map
  ARM: OMAP: SRAM: resolve sparse warnings
  ARM: OMAP AM33xx: hwmod data: resolve sparse warnings
  ARM: OMAP: 32k counter: resolve sparse warnings
Signed-off-by: NOlof Johansson <olof@lixom.net>

Merge branch 'v3.8-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

From Kukjin Kim:
Most of them are EXYNOS5440 fixes which are for changing uart console,
cpu id (typo)  and silent complaining gpio error in kernel boot.

* 'v3.8-samsung-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: skip the clock initialization for exynos5440
  ARM: EXYNOS: enable PINCTRL for EXYNOS5440
  ARM: dts: use uart port1 for console on exynos4210-smdkv310
  ARM: dts: use uart port0 for console on exynos5440-ssdk5440
  ARM: SAMSUNG: fix the cpu id for EXYNOS5440
  ARM: EXYNOS: Revise HDMI resource size

From Shawn Guo:
I have to send one critical mxsfb fix through arm-soc, as FB maintainer
is unresponsive for quite a while.  People start complaining the missing
of such an important fix.

* tag 'mxs-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6:
  video: mxsfb: fix crash when unblanking the display
  ARM: dts: imx23-olinuxino: Fix IOMUX settings

From Shawn Guo:

It includes one critical fix - wrong flexcan2 clock will hang system
when the port gets brought up.  The other two are non-critical fixes,
which are sent together here, since it's still early -rc stage.

* tag 'imx-fixes-3.8' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: dts: imx31-bug: Fix manufacturer compatible string
  clk: imx: Remove 'clock-output-names' from the examples