* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
b43: fix comment typo reqest -> request
Haavard Skinnemoen has left Atmel
cris: typo in mach-fs Makefile
Kconfig: fix copy/paste-ism for dell-wmi-aio driver
doc: timers-howto: fix a typo ("unsgined")
perf: Only include annotate.h once in tools/perf/util/ui/browsers/annotate.c
md, raid5: Fix spelling error in comment ('Ofcourse' --> 'Of course').
treewide: fix a few typos in comments
regulator: change debug statement be consistent with the style of the rest
Revert "arm: mach-u300/gpio: Fix mem_region resource size miscalculations"
audit: acquire creds selectively to reduce atomic op overhead
rtlwifi: don't touch with treewide double semicolon removal
treewide: cleanup continuations and remove logging message whitespace
ath9k_hw: don't touch with treewide double semicolon removal
include/linux/leds-regulator.h: fix syntax in example code
tty: fix typo in descripton of tty_termios_encode_baud_rate
xtensa: remove obsolete BKL kernel option from defconfig
m68k: fix comment typo 'occcured'
arch:Kconfig.locks Remove unused config option.
treewide: remove extra semicolons
...
* 'viafb-next' of git://github.com/schandinat/linux-2.6: (24 commits)
viafb: Automatic OLPC XO-1.5 configuration
viafb: remove unused CEA mode
viafb: try to map less memory in case of failure
viafb: use write combining for video ram
viafb: add X server compatibility mode
viafb: reduce OLPC refresh a bit
viafb: fix OLPC XO 1.5 device connection
viafb: fix OLPC DCON refresh rate
viafb: delete clock and PLL initialization
viafb: replace custom return values
viafb: some small cleanup for global variables
viafb: gather common good, old VGA initialization in one place
viafb: add engine clock support
viafb: add VIA slapping capability
viafb: split clock and PLL code to an extra file
viafb: add primary/secondary clock on/off switches
viafb: add clock source selection and PLL power management support
viafb: prepare for PLL separation
viafb: call viafb_get_clk_value only in viafb_set_vclock
viafb: remove unused max_hres/vres
...
Commit e66eed651f ("list: remove prefetching from regular list
iterators") removed the include of prefetch.h from list.h, which
uncovered several cases that had apparently relied on that rather
obscure header file dependency.
So this fixes things up a bit, using
grep -L linux/prefetch.h $(git grep -l '[^a-z_]prefetchw*(' -- '*.[ch]')
grep -L 'prefetchw*(' $(git grep -l 'linux/prefetch.h' -- '*.[ch]')
to guide us in finding files that either need <linux/prefetch.h>
inclusion, or have it despite not needing it.
There are more of them around (mostly network drivers), but this gets
many core ones.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It may trigger a warning in fs/proc/generic.c:__xlate_proc_name() when
trying to add an entry for the interrupt handler to sysfs.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This moves the
if (num_registered_fb == FB_MAX)
return -ENXIO;
check _AFTER_ the call to do_remove_conflicting_framebuffers() as this
would (now in a safe way) allow a native driver to replace the
conflicting one even if all slots in registered_fb[] are taken.
This also prevents unregistering a framebuffer that is no longer
registered (vga16f will unregister at module unload time even if the
frame buffer had been unregistered earlier due to being found
conflicting).
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When a register_framebuffer() call results in us removing old
conflicting framebuffers, the new registration_lock doesn't protect that
situation. And we can't just add the same locking to the function,
because these functions call each other: register_framebuffer() calls
remove_conflicting_framebuffers, which in turn calls
unregister_framebuffer for any conflicting entry.
In order to fix it, this just creates wrapper functions around all three
functions and makes the versions that actually do the work be called
"do_xxx()", leaving just the wrapper that gets the lock and calls the
worker function.
So the rule becomes simply that "do_xxxx()" has to be called with the
lock held, and now do_register_framebuffer() can just call
do_remove_conflicting_framebuffers(), and that in turn can call
_do_unregister_framebuffer(), and there is no deadlock, and we can hold
the registration lock over the whole sequence, fixing the races.
It also makes error cases simpler, and fixes one situation where we
would return from unregister_framebuffer() without releasing the lock,
pointed out by Bruno Prémont.
Tested-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-by: Anca Emanuel <anca.emanuel@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
read/write/ioctl on a fbcon file descriptor has traditionally used the
fbcon not when it was opened, but as it was at the time of the call.
That makes no sense, but the lack of sense is much more obvious now that
we properly ref-count the usage - it means that the ref-counting doesn't
actually protect operations we do on the frame buffer.
This changes it to look at the fb_info that we got at open time, but in
order to avoid using a frame buffer long after it has been unregistered,
we do verify that it is still current, and return -ENODEV if not.
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Tested-by: Anca Emanuel <anca.emanuel@gmail.com>
Cc: Bruno Prémont <bonbons@linux-vserver.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Andy Whitcroft <andy.whitcroft@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This just adds the refcount and the new registration lock logic. It
does not (for example) actually change the read/write/ioctl routines to
actually use the frame buffer that was opened: those function still end
up alway susing whatever the current frame buffer is at the time of the
call.
Without this, if something holds the frame buffer open over a
framebuffer switch, the close() operation after the switch will access a
fb_info that has been free'd by the unregistering of the old frame
buffer.
(The read/write/ioctl operations will normally not cause problems,
because they will - illogically - pick up the new fbcon instead. But a
switch that happens just as one of those is going on might see problems
too, the window is just much smaller: one individual op rather than the
whole open-close sequence.)
This use-after-free is apparently fairly easily triggered by the Ubuntu
11.04 boot sequence.
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Tested-by: Anca Emanuel <anca.emanuel@gmail.com>
Cc: Bruno Prémont <bonbons@linux-vserver.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Andy Whitcroft <andy.whitcroft@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently, a long set of viafb options are needed to get the XO-1.5
laptop to output video (there is only 1 configuration that works, that
can't really be autodetected).
This patch automatically detects and configures viafb for the XO-1.5
laptop, meaning all that is required for working display is that
viafb is loaded.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
WARNING: drivers/video/built-in.o(.devinit.text+0x38): Section mismatch in reference from the function acornfb_probe() to the function .init.text:acornfb_setup()
The function __devinit acornfb_probe() references
a function __init acornfb_setup().
If acornfb_setup is only used by acornfb_probe then
annotate acornfb_setup with a matching annotation.
WARNING: drivers/video/built-in.o(.devinit.text+0x3c): Section mismatch in reference from the function acornfb_probe() to the function .init.text:acornfb_init_fbinfo()
The function __devinit acornfb_probe() references
a function __init acornfb_init_fbinfo().
If acornfb_init_fbinfo is only used by acornfb_probe then
annotate acornfb_init_fbinfo with a matching annotation.
WARNING: drivers/video/built-in.o(.devinit.text+0x4c0): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown)
The function __devinit acornfb_probe() references
a (unknown reference) __initdata (unknown).
If (unknown) is only used by acornfb_probe then
annotate (unknown) with a matching annotation.
WARNING: drivers/video/built-in.o(.devinit.text+0x4c8): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown)
The function __devinit acornfb_probe() references
a (unknown reference) __initdata (unknown).
If (unknown) is only used by acornfb_probe then
annotate (unknown) with a matching annotation.
WARNING: drivers/video/built-in.o(.devinit.text+0x4cc): Section mismatch in reference from the function acornfb_probe() to the (unknown reference) .init.data:(unknown)
The function __devinit acornfb_probe() references
a (unknown reference) __initdata (unknown).
If (unknown) is only used by acornfb_probe then
annotate (unknown) with a matching annotation.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The current code might result in trying to remap 512MB video ram on
a 32 bit system which is quite likely to fail.
This patch tries to map less of it down to 8MB as this should still
be enough to get a reasonably well working framebuffer. This should
make viafb work for many people without requiring them to manually
allocate more space.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This patch adds a config option to be compatible with X servers like
OpenChrome. This is required as for example the X server does not
handle things like disabled IGAs/PLLs resulting in a potential
freeze on X startup. With this option disabled we can provide some
nice features like power management and not reinitializing the
hardware on every mode switch (taking long time, causing flickering).
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
When allowing some PLL calculation we get a frequency that seems to
be a bit higher than what the OLPC DCON likes resulting in a still
readable but not so good image. We don't really know whether this is
a problem with the calculation formula or the OLPC but as other
displays seem to be happy with the other modes adjusting the OLPC
refresh looks like the better thing. This patch prevents a
regression when dynamic PLL calculation is allowed.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This patch fixes the devices connected on OLPC. The OLPC panel seems
to be connected to DVP1 and LVDS2 for some reasons and if not both
are handled correct the display does not work correct or not at all.
This patch prevents regressions on the OLPC where it worked by
accident but would break in future as the driver did not know the
correct devices connected. This might also fix hardware scaling.
Hopefully the OLPC is the only device with such a requirement but it
will be certainly better to actually know what devices are actually
connected and to not work by accident.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This patch fixes a regression introduced by
fd3cc69848
"viafb: remove duplicated clock storage"
caused by an incosistent mode which pretended to have a higher
refresh rate than it actually had. The wrong refresh rate resulted
in a calculated higher pixclock which the OLPC DCON could not handle.
By reducing the refresh rate to 50Hz we get close to the old
pixclock which makes the OLPC display usable again.
Minor other adjustments are needed as 60Hz is assumed to be a safe
value which is not true for OLPC DCON. This is no problem as we only
support 1200x900 on the OLPC.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Reported-by: Daniel Drake <dsd@laptop.org>
In case CONFIG_FB_PXA_OVERLAY is not defined, the pxafb_freq_transition()
function tests nonexistent member of pxafb_info (since the member is not
part of the structure).
Fix this by wraping the test in ifdef, even if I don't really like how the code
looks now. The check doesn't have to happen if overlays are disabled at all as
the check is always true then.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6:
efifb: Add override for 11" Macbook Air 3,1
efifb: Support overriding fields FW tells us with the DMI data.
fb: Reduce priority of resource conflict message
savagefb: Remove obsolete else clause in savage_setup_i2c_bus
savagefb: Set up I2C based on chip family instead of card id
savagefb: Replace magic register address with define
drivers/video/bfin-lq035q1-fb.c: introduce missing kfree
video: s3c-fb: fix checkpatch errors and warning
efifb: support AMD Radeon HD 6490
s3fb: fix Virge/GX2
fbcon: Remove unused 'display *p' variable from fb_flashcursor()
fbdev: sh_mobile_lcdcfb: fix module lock acquisition
fbdev: sh_mobile_lcdcfb: add blanking support
viafb: initialize margins correct
viafb: refresh rate bug collection
sh: mach-ap325rxa: move backlight control code
sh: mach-ecovec24: support for main lcd backlight
The 11" Macbook Air appears to claim that its stride is 1366, when it's
actually 2048. Override it.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Some machines apparently give us bogus linelength/stride/pitch data, so
we need to support letting the DMI table override the supplied data.
I bet you can't guess whose machines I'm talking about.
Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
It's expected that efifb will conflict with a native driver, so the
handover message should be informational rather than an error.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The else clause was not needed after the cleanup in commit
b8901b091d
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
In practice this means enabling I2C (for DDC2) on all prosavage cards,
like the xorg ddx does. The savage4 and savage2000 families have only
one member each, so there is no change for those.
Tested on TwisterK.
Signed-off-by: Tormod Volden <debian.tormod@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Error handling code following a kmalloc should free the allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch fixes the checkpatch errors listed below:
ERROR: space required before the open parenthesis '('
ERROR: need consistent spacing around '+' (ctx:WxV)
ERROR: space prohibited before that close parenthesis ')'
Also, following warning is fixed by adding 'platid' variable
which can reduce number of lines exceeding 80 characters.
WARNING: line over 80 characters
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* 'unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32:
unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable
unicore32 core architecture: remove duplicated #include
unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state
unicore32 fix: remove arch-specific futex support
unicore32 ldscript fix: add cacheline parameter to PERCPU() macro
We do this also in the real program code so there is no reason to
do it here too (and here it's hardly readable).
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This patch enables the framebuffer for the AMD Radeon 6490 found in the new MacBook Pro 8,2 generation.
The framebuffer's base is located at 0x90010000, the method for obtaining it was found in the same way mentioned in https://patchwork.kernel.org/patch/91704/
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Jonathan Gonzalez <zeus@gnu.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Fix Virge/GX2 support in s3fb:
- fix IDs: 86C357 is GX2, 86C359 is GX2+, 86C356 probably does not exist
- add memory size detection
- drive it the same way as Trio3D/2X
The original IDs most likely came from S3 website which claims that:
- 356 is Virge/GX2 with ID=8A10, driver included in Windows 2K, XP
- 357 is Virge/GX2+ with ID=8A11, driver included in Windows ME
- 359 is Virge/GX2+ with ID=8A12, driver included in Windows ME
but:
- google search for 86C356 only reveals references to Trio3D (probably
because of a typo - Trio3D is 86C365)
- my card is clearly marked as 86C357, Virge/GX2 and has ID=8A10
- there is no driver for IDs 8A11 and 8A12 in Windows ME
- there is a driver for ID 8A10 in Windows ME that says it's GX2 (357)
Tested with #9 Reality 334 (86C357 Virge/GX2, ID=0x8A10).
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Whenever the LCDC is to be started or stopped, a board callback is
checked for existence and invoked. Prior to the invokation, the
callback's module lock is also acquired, to be released once the
callback returns. However, the order of testing makes it possible for
the lock to be acquired and not released in case the callback does not
exist. This patch reorders the tests to prevent this particular case.
Signed-off-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add a blanking callback to the LCDC driver in order to support both
FBIOBLANK and TIOCLINUX blanking ioctls. LCDC clocks are also released
if the requested blanking level is superior to FB_BLANK_NORMAL, to allow
runtime PM to disable the clocks if possible.
Signed-off-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
We do not need viafb_second{,_virtual}_{xres,yres} outside of
viafbdev.c so move them there and eliminate the virtual ones where
the only sane usage is done during initalization.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This patch moves all unprotected VGA initialization in one table and
provides some documentation for those values.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
