linux-toradex.git/include/linux/tty.h, branch v2.6.32.31

tty: Take a 256 byte padding into account when buffering below sub-page units

2010-04-01T22:58:31+00:00

commit 352fa6ad16b89f8ffd1a93b4419b1a8f2259feab upstream.

The TTY layer takes some care to ensure that only sub-page allocations
are made with interrupts disabled. It does this by setting a goal of
"TTY_BUFFER_PAGE" to allocate. Unfortunately, while TTY_BUFFER_PAGE takes the
size of tty_buffer into account, it fails to account that tty_buffer_find()
rounds the buffer size out to the next 256 byte boundary before adding on
the size of the tty_buffer.

This patch adjusts the TTY_BUFFER_PAGE calculation to take into account the
size of the tty_buffer and the padding. Once applied, tty_buffer_alloc()
should not require high-order allocations.

Signed-off-by: Mel Gorman 
Signed-off-by: Greg Kroah-Hartman

tty: Keep the default buffering to sub-page units

2010-04-01T22:58:30+00:00

commit d9661adfb8e53a7647360140af3b92284cbe52d4 upstream.

We allocate during interrupts so while our buffering is normally diced up
small anyway on some hardware at speed we can pressure the VM excessively
for page pairs. We don't really need big buffers to be linear so don't try
so hard.

In order to make this work well we will tidy up excess callers to request_room,
which cannot itself enforce this break up.

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

tty: handle VT specific compat ioctls in vt driver

2009-09-19T20:13:35+00:00

The VT specific compat_ioctl handlers are the only ones
in common code that require the BKL. Moving them into
the vt driver lets us remove the BKL from the other handlers
and cleans up the code.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Greg Kroah-Hartman

serial: move port users helper

2009-09-19T20:13:32+00:00

This little helper is now tty_port specific and useful generally so move it

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

serial: move delta_msr_wait into the tty_port

2009-09-19T20:13:31+00:00

This is used by various drivers not just serial and can be extracted
as commonality

Signed-off-by: Alan Cox

serial: Fold closing_* fields into the tty_port ones

2009-09-19T20:13:28+00:00

Remove some more serial specific use

Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

tty: Add a full port_close function

2009-09-19T20:13:20+00:00

Now we are extracting out methods for shutdown and the like we can add a
proper tty_port_close method that knows all the innards of the tty closing
process and hides the lot from the caller.

At some point in the future this will be paired with a similar open()
helper and the drivers can stick to hardware management.

Signed-off-by: Alan Cox 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

cleanup console_print()

2009-09-15T00:41:42+00:00

console_print() is an old legacy interface mostly unused in the entire
kernel tree. It's best to clean up its existing use and let developers
use their own implementation of it as they feel fit.

Signed-off-by: Anirban Sinha 
Signed-off-by: Linus Torvalds

Merge branch 'topic/asoc' into for-linus

2009-09-10T13:32:40+00:00

* topic/asoc: (226 commits)
  ASoC: au1x: PSC-AC97 bugfixes
  ASoC: Fix WM835x Out4 capture enumeration
  ASoC: Remove unuused hw_read_t
  ASoC: fix pxa2xx-ac97.c breakage
  ASoC: Fully specify DC servo bits to update in wm_hubs
  ASoC: Debugged improper setting of PLL fields in WM8580 driver
  ASoC: new board driver to connect bfin-5xx with ad1836 codec
  ASoC: OMAP: Add functionality to set CLKR and FSR sources in McBSP DAI
  ASoC: davinci: i2c device creation moved into board files
  ASoC: Don't reconfigure WM8350 FLL if not needed
  ASoC: Fix s3c-i2s-v2 build
  ASoC: Make platform data optional for TLV320AIC3x
  ASoC: Add S3C24xx dependencies for Simtec machines
  ASoC: SDP3430: Fix TWL GPIO6 pin mux request
  ASoC: S3C platform: Fix s3c2410_dma_started() called at improper time
  ARM: OMAP: McBSP: Merge two functions into omap_mcbsp_start/_stop
  ASoC: OMAP: Fix setup of XCCR and RCCR registers in McBSP DAI
  OMAP: McBSP: Use textual values in DMA operating mode sysfs files
  ARM: OMAP: DMA: Add support for DMA channel self linking on OMAP1510
  ASoC: Select core DMA when building for S3C64xx
  ...

TTY/ASoC: Rename N_AMSDELTA line discipline to N_V253

2009-08-07T10:48:02+00:00

The patch changes the line discipline name registered in include/linux/tty.h
and updates the ams-delta machine driver to use it.

Signed-off-by: Janusz Krzysztofik 
Signed-off-by: Mark Brown