Convert the device_terminate_all() operation on the
DMA engine to a generic device_control() operation
which can now optionally support also pausing and
resuming DMA on a certain channel. Implemented for the
COH 901 318 DMAC as an example.
[dan.j.williams@intel.com: update for timberdale]
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Maciej Sosnowski <maciej.sosnowski@intel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Li Yang <leoli@freescale.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Cc: Magnus Damm <damm@opensource.se>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Joe Perches <joe@perches.com>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sunxvr1000: Add missing FB=y depenency.
MAINTAINERS: Add entry for sparc serial drivers.
drivers/serial/sunsab.c: adjust the constant used to initialize the interrupt_mask0 fields
Check newly registered backlight_device for error and properly
return error to parent
Mark struct backlight_ops as const.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Acked-by: Mike Frysinger <vapier@gentoo.org> (constify struct backlight_ops)
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This adds the MacBook 1,1 2,1 3,1 4,1 and 4,2 to the DMI tables.
Signed-off-by: Evan McClain <evan.mcclain@gatech.edu>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
check_fb from backlight_ops lacks a reference to the backlight_device
that's being referred to. Add this parameter so a backlight_device
can be mapped to a single framebuffer, especially if the same driver
handles multiple devices on a single system.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Stanse found an ommitted pci_dev_puts on error path in progearbl_probe.
pmu_dev and sb_dev are gotten, but never put when
backlight_device_register fails.
So unify fail paths and put the devs when the failure occurs.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
The Epson LCD L4F00242T03 is mounted on the Freescale i.MX31 PDK board.
Based upon Marek Vasut work in l4f00242t03.c, this driver provides
basic init and power on/off functionality for this device through the
sysfs lcd interface.
Unfortunately Datasheet for this device are not available and
all the control sequences sent to the display were copied from the
freescale driver that in the i.MX31 Linux BSP.
As in the i.MX31PDK board the core and io suppliers are voltage
regulators, that functionality is embedded here, but not strict.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This patch enables the sh_mobile_lcdc driver on
SH-Mobile ARM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
On PL111, as found on Realview and other platforms, these registers are
always arranged as CNTL then IENB. On PL110, these registers are IENB
then CNTL, except on Versatile platforms.
Re-arrange the handling of these register swaps so that PL111 always
gets it right without resorting to ifdefs, leaving the only case needing
special handling being PL110 on Versatile.
Fill out amba/clcd.h with the PL110/PL111 register definition
differences in case someone tries to use the PL110 specific definitions
on PL111.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits)
doc: fix typo in comment explaining rb_tree usage
Remove fs/ntfs/ChangeLog
doc: fix console doc typo
doc: cpuset: Update the cpuset flag file
Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed
Remove drivers/parport/ChangeLog
Remove drivers/char/ChangeLog
doc: typo - Table 1-2 should refer to "status", not "statm"
tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments
No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h
devres/irq: Fix devm_irq_match comment
Remove reference to kthread_create_on_cpu
tree-wide: Assorted spelling fixes
tree-wide: fix 'lenght' typo in comments and code
drm/kms: fix spelling in error message
doc: capitalization and other minor fixes in pnp doc
devres: typo fix s/dev/devm/
Remove redundant trailing semicolons from macros
fix typo "definetly" -> "definitely" in comment
tree-wide: s/widht/width/g typo in comments
...
Fix trivial conflict in Documentation/laptops/00-INDEX
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (370 commits)
ARM: S3C2443: Add set_rate and round_rate calls for armdiv clock
ARM: S3C2443: Remove #if 0 for clk_mpll
ARM: S3C2443: Update notes on MPLLREF clock
ARM: S3C2443: Further clksrc-clk conversions
ARM: S3C2443: Change to using plat-samsung clksrc-clk implementation
USB: Fix s3c-hsotg build following Samsung platform header moves
ARM: S3C64XX: Reintroduce unconditional build of audio device
ARM: 5961/1: ux500: fix CLKRST addresses
ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted
ASoC: Fix S3C64xx IIS driver for Samsung header reorg
ARM: S3C2440: Fix plat-s3c24xx move of s3c2440/s3c2442 support
[ARM] pxa: fix typo in mxm8x10.h
[ARM] pxa/raumfeld: set GPIO drive bits for LED pins
[ARM] pxa/zeus: Add support for mcp2515 CAN bus
[ARM] pxa/zeus: Add support for onboard max6369 watchdog
[ARM] pxa/zeus: Add Eurotech as the manufacturer
[ARM] pxa/zeus: Correct the USB host initialisation flags
[ARM] pxa/zeus: Allow usage of 8250-compatible UART in uncompress
[ARM] pxa: refactor uncompress.h for non-PXA uarts
[ARM] mmp2: fix incorrect calling of chip->mask_ack() for 2nd level cascaded IRQs
...
The function name must be followed by a space, hypen, space, and a short
description.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There was some conditionalizing for the LWMON5 boards in kernel source.
However infrastructure for enabling this isn't here so probably the
special case code can go as well.
Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Acked-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
String constants that are continued on subsequent lines with \ will cause
spurious whitespace in the resulting output.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
An LCD controller driver for nuc900s. The Linux LOGO is just fine and the
FB-Test application was ok, too.
Signed-off-by: Wang Qiang <rurality.linux@gmail.com>
Cc: Wang Zongshun <mcuos.com@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The config Option FB_SOFT_BUFFER was removed in
c465e05a03 ("fbcon/fbdev: Move softcursor
out of fbdev to fbcon").
While moving to fbcon this single driver has it left as a select in
KConfig / #ifdef in source. This last occurence is removed here so the
option is really gone
Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch adds waveform storing capability to broadsheetfb. It uses the
firmware class to retrieve the waveform, and the request to initiate the
waveform storing is done via a driver sysfs entry, loadstore_waveform.
Broadsheet is a framebuffer device. It is slightly different from a
typical framebuffer controller that drives a normal TFT-LCD display. Most
E-Ink display panels require a waveform in order to function. That is, in
order to drive the state of a pixel to black, gray, or white, a specific
waveform is utilized. Basically, that waveform represents the specific
E-field wiggling needed to get the pixel to its optimal state given
current temperature, and its previous state. TN/IPS-LCDs use a similar
concept but the driving waveform is sufficiently simple that it is
internalized in the TFT source/gate driver.
These E-Ink waveforms are specific to a production batch. That is, a
batch of display films are produced, then they get characterized and a
waveform is generated for that batch. Broadsheet, typically, is attached
to its private SPI flash which is then flashed with this waveform.
Users won't be able to see the waveform and typically won't ever need to
know about it. If however, the display panel attached to broadsheet is
changed out, then they will need to update their waveform. That would
typically be done at a factory or repair facility rather than by a user.
[akpm@linux-foundation.org: fix printk warning]
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Allow boards with GP-MMIO controllers to provide hooks to broadsheetfb in
order to offload cmd/data writes and data reads instead of relying only on
host based GPIO wiggling.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add support for the color depth 15 on IGA1 and 30 on IGA1 and IGA2. To
allow the usage of those the driver now refuses color depth that are
totally off and otherwise the selection in viafb_check_var is used.
Therefore the first call to this for the first framebuffer was delayed a
bit. It only enables the new formats if they are requested exactly
(viafb_bpp=15|30).
As this is a new feature, no regressions are expected. The color depth 15
was successfully tested. Didn't get anything usable for 30 but that might
be the programs fault. I would like to get some feedback whether it works
as expected or not if somebody knows a program/configuration where it
should.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a rewritten version of viafb_setcolreg. The hardware register
writes were split up and moved to hw.c where they belong as this is really
low level stuff. It was made dual fb aware.
Furthermore viafb_setcmap was removed as the problem with 8bpp originated
from a bug in writing multiple color registers at once. The removal of
viafb_setcmap might introduce a small performance regression but its
certainly better to receive the correct result a bit slower than a garbled
picture fast. It should give us a working 8bpp mode and is more
extensible than the old hardcoded code. No other regressions are expected
but as the hardware might be a bit picky it might cause some regressions
in 8bpp mode on some hardware although I doubt that.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Do not require the virtual_xres to be aligned as line length is for such
purposes. Calculate always the smallest line length required.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make color checking a bit more tolerant in what values it allows and more
fine grained to later support 15 and 30 bits formats. It splits the
filling of the color information in var to a seperate function and sets
some color related values in var that where previously untouched.
This could be a bug fix but at least I don't know any applications that
was fooled by not correctly setting the fields in var. At least no
regressions are expected.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Move some variables closer to their usage.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Some code depended on IGA1_IGA2 which was never set (at least with the
symbolic name). Remove this dead code although it might one day be useful
to get a hint on how some things might work. However as this is dead it
is likely full of bugs and would prevent a clean structure (as it has some
very strange things).
Dead code -> no regressions, at least if VIA doesn't do anything very ugly.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch splits color mode setting up in seperate functions. Some
hardware initialization that was previously mixed with it is moved to
viafb_setmode. As are the calls to the newly created function. This is
yet another little step towards controlling each IGA on its own.
As this patch really aims too mimic the old behaviour no regressions are
expected. However I noticed that 8bpp (or 6bpp?) seems actually a bit
broken before and after the patch.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Refuse to work if wrong parameters are given. This should improve the
user experience as it will be clear that something is wrong and not
silently ignored.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch is an attempt to make viafb_set_par work correctly with more
than one framebuffer. As modesetting is not (yet/easily) possible for
each individual IGA it uses the (normally to be avoided) global variables
viafbinfo{,1} to ensure that each function is called with the correct
values.
This patch (finally) allows usable dual framebuffer setups and should not
affect non dual fb ones. It works in some (most?) configurations as
sometimes the driver still gets device connections wrong. It can be worth
to try the devices in reverse order (in viafb_active_dev).
The user experience is still not very nice as:
- on the second fb you'll normally have a garbled picture as long as
no application draws to it
goal: auto on/off devices depending on reference counting
- as the whole machinery is always done you can see mode changes also
in an unaffected framebuffer
goal: split modesetting up for each individual IGA
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Set always the correct video address. Especially do panning right on
multiple IGAs.
This should have no effect on single monitor mode (no SAMM, no dual fb).
For SAMM without dual fb this might break something as I really cannot
image what we are supposed to do for different resolutions with a single
framebuffer as we can't get data out of nowhere (no, they are not set up
in something one would call "expanded"). Previously I got for that funny
colored pictures as the second IGA pointed to video memory that was never
written to. After the patch it'll work as cloning if the first and second
mode are identical (this was working already without SAMM). Finally for
dual fb this should push us a step in the right direction.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch reorders the initialization for dual framebuffer mode to not
ignore the settings for the first mode. Previously they were overwritten
with the settings for the second one before they were applied.
This should have no effect on non dual framebuffer mode and do what the
user intended (initalization to desired modes) in dual framebuffer mode.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove some functions that were never executed and a related undocumented
module parameter.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove some unused variables, move some dvi code around and store the
detected maximum resolution for later use. The vertical resolution is
handled as the old code did it but I hope it can be read from the hardware
some day.
No runtime change expected.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove the rest of the VIA_RES_* use cases. Obviously this was no longer
useful. Keep the related infrastructure/functions for later use.
No runtime impact expected.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the first step to remove an artificial global index that was used
in two ways:
1. As a pseudo index in the mode table. Pseudo as you had to search
through the table to find the referenced entry. This was replaced by
using a pointer to the entry.
2. As a shortcut to compare a combination of horizontal and vertical
resolution at the same time.
This was replaced by a "(hres<<16) | vres" which is good enough for
now and the near future. If vres or hres become greater than 2^16 this
might indeed cause problems but this solution allows to split this
indexing mess up without the requirement to do even more code changes.
This is a big change that will allow more clean ups. It should be a bit
faster but that is probably not relevant for normal operation. No
regressions expected but as this is a relatively big step heavy testing is
appreciated.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Remove a completly unused function.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Print a warning when viafb ioctls are called. Those should not be used as
their exact meaning is sometimes unknown and they in parts duplicate
functionality present in the framebuffer interface.
There is no known user of these ioctls.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update broadsheetfb to add support for multiple panel types. The 3.7" and
6" are known to work but the 9.7" is untested due to lack of hardware.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The common Blackfin code implements the get_fb_unmapped_area() function,
so we no longer need to have our own mmap() handler. The common fb code
will take care of everything for us now.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ftarget, Fret, n and m are unsigned so the tests did not work.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Andres Salomon <dilinger@debian.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Alberto Mardegan <mardy@users.sourceforge.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andriy Skulysh <askulysh@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Chandramouli Narayanan <mouli@linux.intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Frans Pop <elendil@planet.nl>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Helge Deller <deller@gmx.de>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Ian Molton <spyro@f2s.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Kaj-Michael Lang <milang@tal.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Magnus Damm <damm@igel.co.jp>
Cc: Martin Michlmayr <tbm@cyrius.com>
Cc: Matthias Kaehlcke <matthias@kaehlcke.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Pavel Machek <pavel@suse.cz>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Roland Stigge <stigge@antcom.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vincent Sanders <vince@simtec.co.uk>
Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: James Simmons <jsimmons@infradead.org>
Acked-by: Peter Jones <pjones@redhat.com>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
