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Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"Just a couple of small fixes and cleanups:
- fix memory access if logo is bigger than the screen (Manfred
Schlaegl)
- silence fbcon logo on 'quiet' boots (Prarit Bhargava)
- use kvmalloc() for scrollback buffer in fbcon (Konstantin Khorenko)
- misc fixes (Colin Ian King, YueHaibing, Matteo Croce, Mathieu
Malaterre, Anders Roxell, Arnd Bergmann)
- misc cleanups (Rob Herring, Lubomir Rintel, Greg Kroah-Hartman,
Jani Nikula, Michal Vokáč)"
* tag 'fbdev-v5.1' of git://github.com/bzolnier/linux:
fbdev: mbx: fix a misspelled variable name
fbdev: omap2: fix warnings in dss core
video: fbdev: Fix potential NULL pointer dereference
fbcon: Silence fbcon logo on 'quiet' boots
printk: Export console_printk
ARM: dts: imx28-cfa10036: Fix the reset gpio signal polarity
video: ssd1307fb: Do not hard code active-low reset sequence
dt-bindings: display: ssd1307fb: Remove reset-active-low from examples
fbdev: fbmem: fix memory access if logo is bigger than the screen
video/fbdev: refactor video= cmdline parsing
fbdev: mbx: fix up debugfs file creation
fbdev: omap2: no need to check return value of debugfs_create functions
video: fbdev: geode: remove ifdef OLPC noise
video: offb: annotate implicit fall throughs
omapfb: fix typo
fbdev: Use of_node_name_eq for node name comparisons
fbcon: use kvmalloc() for scrollback buffer
fbdev: chipsfb: remove set but not used variable 'size'
fbdev/via: fix spelling mistake "Expandsion" -> "Expansion"
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight fixlet from Lee Jones:
"Allow GPIO call to sleep in pwm_bl driver"
* tag 'backlight-next-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: pwm_bl: Use gpiod_get_value_cansleep() to get initial state
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A recent cleanup introduced a build failure when a variable
was spelled incorrectly:
In file included from drivers/video/fbdev/mbx/mbxfb.c:881:
drivers/video/fbdev/mbx/mbxdebugfs.c: In function 'mbxfb_debugfs_init':
drivers/video/fbdev/mbx/mbxdebugfs.c:217:2: error: 'mbfi' undeclared (first use in this function); did you mean 'mfbi'?
mbfi->debugfs_dir = dir;
^~~~
mfbi
drivers/video/fbdev/mbx/mbxdebugfs.c:217:2: note: each undeclared identifier is reported only once for each function it appears in
drivers/video/fbdev/mbx/mbxdebugfs.c:213:21: error: unused variable 'mfbi' [-Werror=unused-variable]
struct mbxfb_info *mfbi = fbi->par;
^~~~
Fixes: 72aed9e31344 ("fbdev: mbx: fix up debugfs file creation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Commit 60d2fa0dad06 ("fbdev: omap2: no need to check return value of
debugfs_create functions") changed the declaration of the return value
of function dss_debugfs_create_file() and the following two warnings
appeared:
drivers/video/fbdev/omap2/omapfb/dss/core.c: In function ‘dss_debugfs_create_file’:
drivers/video/fbdev/omap2/omapfb/dss/core.c:139:9: warning: ‘return’ with a value,
in function returning void
return 0;
^
drivers/video/fbdev/omap2/omapfb/dss/core.c: In function ‘omap_dss_probe’:
drivers/video/fbdev/omap2/omapfb/dss/core.c:172:6: warning: unused variable ‘r’
[-Wunused-variable]
int r;
^
Rework so function dss_debugfs_create_file() that is declared to return
void don't 'return 0' and remove the declaration of the unused variable
'r'.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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There is a potential NULL pointer dereference in case
fb_create_modedb() fails and returns NULL.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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On text-based systems the 'quiet' boot option will show printk levels
higher than CONSOLE_LOGLEVEL_QUIET. The displaying of the Tux logo
during boot can cause some consoles to lose display data and as a result
confuse the end user.
Do not display the Tux logo on systems that are in 'quiet' boot.
v2: It helps to commit all my changes before sending them. Remove extra
bracket.
v3: buildbot error fix: fbcon can be built as part of a module so export console_printk
v4: move console_printk change to separate patch, and drop logo cleanup
v5: Only set FBCON_LOGO_DONTSHOW for console loglevel
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Marko Myllynen <myllynen@redhat.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Yisheng Xie <ysxie@foxmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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The SSD130x OLED display reset signal is active low. Now the reset
sequence is implemented in such a way that users are forced to
define reset-gpios as GPIO_ACTIVE_HIGH in DT to make the reset work.
Do not hard code the active-low sequence into the driver but instead
allow the user to specify the gpio as GPIO_ACTIVE_LOW to reflect
the real world.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>,
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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There is no clipping on the x or y axis for logos larger that the framebuffer
size. Therefore: a logo bigger than screen size leads to invalid memory access:
[ 1.254664] Backtrace:
[ 1.254728] [<c02714e0>] (cfb_imageblit) from [<c026184c>] (fb_show_logo+0x620/0x684)
[ 1.254763] r10:00000003 r9:00027fd8 r8:c6a40000 r7:c6a36e50 r6:00000000 r5:c06b81e4
[ 1.254774] r4:c6a3e800
[ 1.254810] [<c026122c>] (fb_show_logo) from [<c026c1e4>] (fbcon_switch+0x3fc/0x46c)
[ 1.254842] r10:c6a3e824 r9:c6a3e800 r8:00000000 r7:c6a0c000 r6:c070b014 r5:c6a3e800
[ 1.254852] r4:c6808c00
[ 1.254889] [<c026bde8>] (fbcon_switch) from [<c029c8f8>] (redraw_screen+0xf0/0x1e8)
[ 1.254918] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:c070d5a0 r5:00000080
[ 1.254928] r4:c6808c00
[ 1.254961] [<c029c808>] (redraw_screen) from [<c029d264>] (do_bind_con_driver+0x194/0x2e4)
[ 1.254991] r9:00000000 r8:00000000 r7:00000014 r6:c070d5a0 r5:c070d5a0 r4:c070d5a0
So prevent displaying a logo bigger than screen size and avoid invalid
memory access.
Signed-off-by: Manfred Schlaegl <manfred.schlaegl@ginzinger.com>
Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Make the video_setup() function slightly easier to read by removing the
repeated checks for !global. Remove the misleading return value comment
while at it.
I'm slightly hesitant to change any of this, but here goes anyway, with
hopes that the next person to have to look at this has it a wee bit
easier.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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There is no need to keep the dentries around for the individual debugfs
files, just delete the whole directory all at once at shutdown instead.
This also fixes a tiny memory leak where the memory for the pointers to
the file dentries was never freed when the device shut down, as well as
making the logic of the code a lot simpler.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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<asm/olpc.h> provides olpc_has_dcon() stub for CONFIG_OLPC=n, compiler
should just optimize the unneeded bits away.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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There is a plan to build the kernel with -Wimplicit-fallthrough and
these places in the code produced warnings (W=1). Fix them up.
This commit remove the following warnings:
drivers/video/fbdev/offb.c:211:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
drivers/video/fbdev/offb.c:142:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Fix spelling mistake: "lenght" -> "length"
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.
For instances using of_node_cmp, this has the side effect of now using
case sensitive comparisons. This should not matter for any FDT based
system which omap is.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Scrollback frame buffer is rather big - 32K,
so it requires 3rd order page, so let's use kvmalloc() instead of
ordinary kmalloc() for it.
Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/video/fbdev/chipsfb.c: In function 'chipsfb_pci_init':
drivers/video/fbdev/chipsfb.c:352:22: warning:
variable 'size' set but not used [-Wunused-but-set-variable]
Fixes: 8c8709334cec ("[PATCH] ppc32: Remove CONFIG_PMAC_PBOOK").
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
[b.zolnierkie: minor commit summary and description fixups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Trivial fix to spelling mistake in MODULE_PARM_DESC text.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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gpiod_get_value() gives out a warning if access to the underlying gpiochip
requires sleeping, which is common for I2C based chips:
WARNING: CPU: 0 PID: 77 at drivers/gpio/gpiolib.c:2500 gpiod_get_value+0xd0/0x100
Modules linked in:
CPU: 0 PID: 77 Comm: kworker/0:2 Not tainted 4.14.0-rc3-00589-gf32897915d48-dirty #90
Hardware name: Allwinner sun4i/sun5i Families
Workqueue: events deferred_probe_work_func
[<c010ec50>] (unwind_backtrace) from [<c010b784>] (show_stack+0x10/0x14)
[<c010b784>] (show_stack) from [<c0797224>] (dump_stack+0x88/0x9c)
[<c0797224>] (dump_stack) from [<c0125b08>] (__warn+0xe8/0x100)
[<c0125b08>] (__warn) from [<c0125bd0>] (warn_slowpath_null+0x20/0x28)
[<c0125bd0>] (warn_slowpath_null) from [<c037069c>] (gpiod_get_value+0xd0/0x100)
[<c037069c>] (gpiod_get_value) from [<c03778d0>] (pwm_backlight_probe+0x238/0x508)
[<c03778d0>] (pwm_backlight_probe) from [<c0411a2c>] (platform_drv_probe+0x50/0xac)
[<c0411a2c>] (platform_drv_probe) from [<c0410224>] (driver_probe_device+0x238/0x2e8)
[<c0410224>] (driver_probe_device) from [<c040e820>] (bus_for_each_drv+0x44/0x94)
[<c040e820>] (bus_for_each_drv) from [<c040ff0c>] (__device_attach+0xb0/0x114)
[<c040ff0c>] (__device_attach) from [<c040f4f8>] (bus_probe_device+0x84/0x8c)
[<c040f4f8>] (bus_probe_device) from [<c040f944>] (deferred_probe_work_func+0x50/0x14c)
[<c040f944>] (deferred_probe_work_func) from [<c013be84>] (process_one_work+0x1ec/0x414)
[<c013be84>] (process_one_work) from [<c013ce5c>] (worker_thread+0x2b0/0x5a0)
[<c013ce5c>] (worker_thread) from [<c0141908>] (kthread+0x14c/0x154)
[<c0141908>] (kthread) from [<c0107ab0>] (ret_from_fork+0x14/0x24)
This was missed in commit 0c9501f823a4 ("backlight: pwm_bl: Handle gpio
that can sleep"). The code was then moved to a separate function in
commit 7613c922315e ("backlight: pwm_bl: Move the checks for initial power
state to a separate function").
The only usage of gpiod_get_value() is during the probe stage, which is
safe to sleep in. Switch to gpiod_get_value_cansleep().
Fixes: 0c9501f823a4 ("backlight: pwm_bl: Handle gpio that can sleep")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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We need the char-misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small tty core and serial driver fixes for
5.0-rc4 to resolve some reported issues.
Nothing major, the small serial driver fixes, a tty core fixup for a
crash that was reported, and some good vt fixes from Nicolas Pitre as
he seems to be auditing that chunk of code a lot lately.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled
tty: Handle problem if line discipline does not have receive_buf
vgacon: unconfuse vc_origin when using soft scrollback
vt: invoke notifier on screen size change
vt: always call notifier with the console lock held
vt: make vt_console_print() compatible with the unicode screen buffer
tty/n_hdlc: fix __might_sleep warning
serial: 8250: Fix serial8250 initialization crash
uart: Fix crash in uart_write and uart_put_char
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CONFIG_PPC_PMAC && CONFIG_NVRAM
This patch addresses inconsistencies in Mac framebuffer drivers and their
use of Kconfig symbols relating to NVRAM, so PPC64 can use CONFIG_NVRAM.
The defined(CONFIG_NVRAM) condition is replaced with the weaker
IS_REACHABLE(CONFIG_NVRAM) condition, like atari_scsi.
Macintosh framebuffer drivers use default settings for color mode and
video mode that are found in NVRAM. On PCI Macs, MacOS stores display
settings in the Name Registry (NR) partition in NVRAM*. On NuBus Macs,
there is no NR partition and MacOS stores display mode settings in PRAM**.
Early-model Macs are the ones most likely to benefit from these settings,
since they are more likely to have a fixed-frequency monitor connected to
the built-in framebuffer device. Moreover, a single NV_CMODE value and
a single NV_VMODE value provide for only one display.
The NV_CMODE and NV_VMODE constants are apparently offsets into the NR
partition for Old World machines. This also suggests that these defaults
are not useful on later models. The NR partition seems to be optional on
New World machines. CONFIG_NVRAM cannot be enabled on PPC64 at present.
It is safe to say that NVRAM support in PowerMac fbdev drivers is only
applicable to CONFIG_PPC32 so make this condition explicit. This means
matroxfb driver won't crash on PPC64 when CONFIG_NVRAM becomes available
there.
For imsttfb, add the missing CONFIG_NVRAM test to prevent a build failure,
since PPC64 does not implement nvram_read_byte(). Also add a missing
machine_is(powermac) check. Change the inconsistent dependency on
CONFIG_PPC and the matching #ifdef tests to CONFIG_PPC_PMAC.
For valkyriefb, to improve clarity and consistency with the other PowerMac
fbdev drivers, test for CONFIG_PPC_PMAC instead of !CONFIG_MAC. Remove a
bogus comment regarding PRAM.
* See GetPreferredConfiguration and SavePreferredConfiguration in
"Designing PCI Cards and Drivers for Power Macintosh Computers".
** See SetDefaultMode and GetDefaultMode in "Designing Cards and Drivers
for the Macintosh Family".
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove the nvram_read_byte() and nvram_write_byte() declarations in
powerpc/include/asm/nvram.h and use the cross-platform static functions
in linux/nvram.h instead.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull fbdev fixes from Bartlomiej Zolnierkiewicz:
- fix stack memory leak in omap2fb driver (Vlad Tsyrklevich)
- fix OF node name handling v4.20 regression in offb driver (Rob
Herring)
- convert CONFIG_FB_LOGO_CENTER config option added in v5.0-rc1 into a
kernel parameter (Peter Rosin)
* tag 'fbdev-v5.0-rc3' of git://github.com/bzolnier/linux:
fbdev: fbmem: convert CONFIG_FB_LOGO_CENTER into a cmd line option
fbdev: offb: Fix OF node name handling
omap2fb: Fix stack memory disclosure
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When CONFIG_VGACON_SOFT_SCROLLBACK is selected, the VGA display memory
index and vc_visible_origin don't change when scrollback is activated.
The actual screen content is saved away and the scrollbackdata is copied
over it. However the vt code, and /dev/vcs devices in particular, still
expect vc_origin to always point at the actual screen content not the
displayed scrollback content.
So adjust vc_origin to point at the saved screen content when scrollback
is active and set it back to vc_visible_origin when restoring the screen.
This fixes /dev/vcsa<n> that return scrollback content when they
shouldn't (onli /dev/vcsa without a number should), and also fixes
/dev/vcsu that should return scrollback content when scrollback is
active but currently doesn't.
An unnecessary call to vga_set_mem_top() is also removed.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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A command line option is much more flexible than a config option and
the supporting code is small. Gets rid of #ifdefs in the code too...
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Fix-ups:
- Use new of_node_name_eq() API call
Bug Fixes:
- Internally track 'enabled' state in pwm_bl
- Fix auto-generated pwm_bl brightness tables parsed by DT
* tag 'backlight-next-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: 88pm860x_bl: Use of_node_name_eq for node name comparisons
backlight: pwm_bl: Fix devicetree parsing with auto-generated brightness tables
backlight: pwm_bl: Re-add driver internal enabled tracking
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Commit 5c63e407aaab ("fbdev: Convert to using %pOFn instead of
device_node.name") changed how the OF FB driver handles the OF node
name. This missed the case where the node name is passed to
offb_init_palette_hacks(). This results in a NULL ptr dereference
in strncmp and breaks any system except ones using bootx with no display
node.
Fix this by making offb_init_palette_hacks() use the OF node pointer and
use of_node_name_prefix() helper function instead for node name
comparisons. This helps in moving all OF node name accesses to helper
functions in preparation to remove struct device_node.name pointer.
Fixes: 5c63e407aaab ("fbdev: Convert to using %pOFn instead of device_node.name")
Reported-by: Mathieu Malaterre <malat@debian.org>
Tested-by: Mathieu Malaterre <malat@debian.org>
Cc: stable@vger.kernel.org # v4.19+
Cc: Elimar Riesebieter <riesebie@lxtec.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Using [1] for static analysis I found that the OMAPFB_QUERY_PLANE,
OMAPFB_GET_COLOR_KEY, OMAPFB_GET_DISPLAY_INFO, and OMAPFB_GET_VRAM_INFO
cases could all leak uninitialized stack memory--either due to
uninitialized padding or 'reserved' fields.
Fix them by clearing the shared union used to store copied out data.
[1] https://github.com/vlad902/kernel-uninitialized-memory-checker
Signed-off-by: Vlad Tsyrklevich <vlad@tsyrklevich.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Fixes: b39a982ddecf ("OMAP: DSS2: omapfb driver")
Cc: security@kernel.org
[b.zolnierkie: prefix patch subject with "omap2fb: "]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.
This change was generated with the following Coccinelle SmPL patch:
@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@
-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"This time the pull request is really small.
The most notable changes are fixing fbcon to not cause crash on
unregister_framebuffer() operation when there is more than one
framebuffer, adding config option to center the bootup logo and making
FB_BACKLIGHT config option tristate (which in turn uncovered incorrect
FB_BACKLIGHT usage by DRM's nouveau driver).
Summary:
- fix fbcon to not cause crash on unregister_framebuffer() when there
is more than one framebuffer (Noralf Trønnes)
- improve support for small rotated displays (Peter Rosin)
- fix probe failure handling in udlfb driver (Dan Carpenter)
- add config option to center the bootup logo (Peter Rosin)
- make FB_BACKLIGHT config option tristate (Rob Clark)
- remove superfluous HAS_DMA dependency for goldfishfb driver (Geert
Uytterhoeven)
- misc fixes (Alexey Khoroshilov, YueHaibing, Colin Ian King, Lubomir
Rintel)
- misc cleanups (Yangtao Li, Wen Yang)
also there is DRM's nouveau driver fix for wrong FB_BACKLIGHT config
option usage (FB_BACKLIGHT is for internal fbdev subsystem use only)"
* tag 'fbdev-v4.21' of git://github.com/bzolnier/linux:
drm/nouveau: fix incorrect FB_BACKLIGHT usage in Kconfig
fbdev: fbcon: Fix unregister crash when more than one framebuffer
fbdev: Remove depends on HAS_DMA in case of platform dependency
pxa168fb: trivial typo fix
fbdev: fsl-diu: remove redundant null check on cmap
fbdev: omap2: omapfb: convert to DEFINE_SHOW_ATTRIBUTE
fbdev: uvesafb: fix spelling mistake "memoery" -> "memory"
fbdev: fbmem: add config option to center the bootup logo
fbdev: fbmem: make fb_show_logo_line return the end instead of the height
video: fbdev: pxafb: Fix "WARNING: invalid free of devm_ allocated data"
fbdev: fbmem: behave better with small rotated displays and many CPUs
video: clps711x-fb: release disp device node in probe()
fbdev: make FB_BACKLIGHT a tristate
udlfb: fix some inconsistent NULL checking
|
|
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.
It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access. But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.
A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model. And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.
This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.
There were a couple of notable cases:
- csky still had the old "verify_area()" name as an alias.
- the iter_iov code had magical hardcoded knowledge of the actual
values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
really used it)
- microblaze used the type argument for a debug printout
but other than those oddities this should be a total no-op patch.
I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something. Any missed conversion should be trivially fixable, though.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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|
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree updates from Rob Herring:
"The biggest highlight here is the start of using json-schema for DT
bindings. Being able to validate bindings has been discussed for years
with little progress.
- Initial support for DT bindings using json-schema language. This is
the start of converting DT bindings from free-form text to a
structured format.
- Reworking of initrd address initialization. This moves to using the
phys address instead of virt addr in the DT parsing code. This
rework was motivated by CONFIG_DEV_BLK_INITRD causing unnecessary
rebuilding of lots of files.
- Fix stale phandle entries in phandle cache
- DT overlay validation improvements. This exposed several memory
leak bugs which have been fixed.
- Use node name and device_type helper functions in DT code
- Last remaining conversions to using %pOFn printk specifier instead
of device_node.name directly
- Create new common RTC binding doc and move all trivial RTC devices
out of trivial-devices.txt.
- New bindings for Freescale MAG3110 magnetometer, Cadence Sierra
PHY, and Xen shared memory
- Update dtc to upstream version v1.4.7-57-gf267e674d145"
* tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (68 commits)
of: __of_detach_node() - remove node from phandle cache
of: of_node_get()/of_node_put() nodes held in phandle cache
gpio-omap.txt: add reg and interrupts properties
dt-bindings: mrvl,intc: fix a trivial typo
dt-bindings: iio: magnetometer: add dt-bindings for freescale mag3110
dt-bindings: Convert trivial-devices.txt to json-schema
dt-bindings: arm: mrvl: amend Browstone compatible string
dt-bindings: arm: Convert Tegra board/soc bindings to json-schema
dt-bindings: arm: Convert ZTE board/soc bindings to json-schema
dt-bindings: arm: Add missing Xilinx boards
dt-bindings: arm: Convert Xilinx board/soc bindings to json-schema
dt-bindings: arm: Convert VIA board/soc bindings to json-schema
dt-bindings: arm: Convert ST STi board/soc bindings to json-schema
dt-bindings: arm: Convert SPEAr board/soc bindings to json-schema
dt-bindings: arm: Convert CSR SiRF board/soc bindings to json-schema
dt-bindings: arm: Convert QCom board/soc bindings to json-schema
dt-bindings: arm: Convert TI nspire board/soc bindings to json-schema
dt-bindings: arm: Convert TI davinci board/soc bindings to json-schema
dt-bindings: arm: Convert Calxeda board/soc bindings to json-schema
dt-bindings: arm: Convert Altera board/soc bindings to json-schema
...
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Pull drm updates from Dave Airlie:
"Core:
- shared fencing staging removal
- drop transactional atomic helpers and move helpers to new location
- DP/MST atomic cleanup
- Leasing cleanups and drop EXPORT_SYMBOL
- Convert drivers to atomic helpers and generic fbdev.
- removed deprecated obj_ref/unref in favour of get/put
- Improve dumb callback documentation
- MODESET_LOCK_BEGIN/END helpers
panels:
- CDTech panels, Banana Pi Panel, DLC1010GIG,
- Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
- Himax HX8357D, simulated RTSM AEMv8.
- GPD Win2 panel
- AUO G101EVN010
vgem:
- render node support
ttm:
- move global init out of drivers
- fix LRU handling for ghost objects
- Support for simultaneous submissions to multiple engines
scheduler:
- timeout/fault handling changes to help GPU recovery
- helpers for hw with preemption support
i915:
- Scaler/Watermark fixes
- DP MST + powerwell fixes
- PSR fixes
- Break long get/put shmemfs pages
- Icelake fixes
- Icelake DSI video mode enablement
- Engine workaround improvements
amdgpu:
- freesync support
- GPU reset enabled on CI, VI, SOC15 dGPUs
- ABM support in DC
- KFD support for vega12/polaris12
- SDMA paging queue on vega
- More amdkfd code sharing
- DCC scanout on GFX9
- DC kerneldoc
- Updated SMU firmware for GFX8 chips
- XGMI PSP + hive reset support
- GPU reset
- DC trace support
- Powerplay updates for newer Polaris
- Cursor plane update fast path
- kfd dma-buf support
virtio-gpu:
- add EDID support
vmwgfx:
- pageflip with damage support
nouveau:
- Initial Turing TU104/TU106 modesetting support
msm:
- a2xx gpu support for apq8060 and imx5
- a2xx gpummu support
- mdp4 display support for apq8060
- DPU fixes and cleanups
- enhanced profiling support
- debug object naming interface
- get_iova/page pinning decoupling
tegra:
- Tegra194 host1x, VIC and display support enabled
- Audio over HDMI for Tegra186 and Tegra194
exynos:
- DMA/IOMMU refactoring
- plane alpha + blend mode support
- Color format fixes for mixer driver
rcar-du:
- R8A7744 and R8A77470 support
- R8A77965 LVDS support
imx:
- fbdev emulation fix
- multi-tiled scalling fixes
- SPDX identifiers
rockchip
- dw_hdmi support
- dw-mipi-dsi + dual dsi support
- mailbox read size fix
qxl:
- fix cursor pinning
vc4:
- YUV support (scaling + cursor)
v3d:
- enable TFU (Texture Formatting Unit)
mali-dp:
- add support for linear tiled formats
sun4i:
- Display Engine 3 support
- H6 DE3 mixer 0 support
- H6 display engine support
- dw-hdmi support
- H6 HDMI phy support
- implicit fence waiting
- BGRX8888 support
meson:
- Overlay plane support
- implicit fence waiting
- HDMI 1.4 4k modes
bridge:
- i2c fixes for sii902x"
* tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
drm/amd/display: Add fast path for cursor plane updates
drm/amdgpu: Enable GPU recovery by default for CI
drm/amd/display: Fix duplicating scaling/underscan connector state
drm/amd/display: Fix unintialized max_bpc state values
Revert "drm/amd/display: Set RMX_ASPECT as default"
drm/amdgpu: Fix stub function name
drm/msm/dpu: Fix clock issue after bind failure
drm/msm/dpu: Clean up dpu_media_info.h static inline functions
drm/msm/dpu: Further cleanups for static inline functions
drm/msm/dpu: Cleanup the debugfs functions
drm/msm/dpu: Remove dpu_irq and unused functions
drm/msm: Make irq_postinstall optional
drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
drm/msm/dpu: Remove unused functions
drm/msm/dpu: Remove dpu_crtc_is_enabled()
drm/msm/dpu: Remove dpu_crtc_get_mixer_height
drm/msm/dpu: Remove dpu_dbg
drm/msm: dpu: Remove crtc_lock
drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
drm/msm: dpu: Separate crtc assignment from vblank enable
...
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|
When unregistering fbdev using unregister_framebuffer(), any bound
console will unbind automatically. This is working fine if this is the
only framebuffer, resulting in a switch to the dummy console. However if
there is a fb0 and I unregister fb1 having a bound console, I eventually
get a crash. The fastest way for me to trigger the crash is to do a
reboot, resulting in this splat:
[ 76.478825] WARNING: CPU: 0 PID: 527 at linux/kernel/workqueue.c:1442 __queue_work+0x2d4/0x41c
[ 76.478849] Modules linked in: raspberrypi_hwmon gpio_backlight backlight bcm2835_rng rng_core [last unloaded: tinydrm]
[ 76.478916] CPU: 0 PID: 527 Comm: systemd-udevd Not tainted 4.20.0-rc4+ #4
[ 76.478933] Hardware name: BCM2835
[ 76.478949] Backtrace:
[ 76.478995] [<c010d388>] (dump_backtrace) from [<c010d670>] (show_stack+0x20/0x24)
[ 76.479022] r6:00000000 r5:c0bc73be r4:00000000 r3:6fb5bf81
[ 76.479060] [<c010d650>] (show_stack) from [<c08e82f4>] (dump_stack+0x20/0x28)
[ 76.479102] [<c08e82d4>] (dump_stack) from [<c0120070>] (__warn+0xec/0x12c)
[ 76.479134] [<c011ff84>] (__warn) from [<c01201e4>] (warn_slowpath_null+0x4c/0x58)
[ 76.479165] r9:c0eb6944 r8:00000001 r7:c0e927f8 r6:c0bc73be r5:000005a2 r4:c0139e84
[ 76.479197] [<c0120198>] (warn_slowpath_null) from [<c0139e84>] (__queue_work+0x2d4/0x41c)
[ 76.479222] r6:d7666a00 r5:c0e918ee r4:dbc4e700
[ 76.479251] [<c0139bb0>] (__queue_work) from [<c013a02c>] (queue_work_on+0x60/0x88)
[ 76.479281] r10:c0496bf8 r9:00000100 r8:c0e92ae0 r7:00000001 r6:d9403700 r5:d7666a00
[ 76.479298] r4:20000113
[ 76.479348] [<c0139fcc>] (queue_work_on) from [<c0496c28>] (cursor_timer_handler+0x30/0x54)
[ 76.479374] r7:d8a8fabc r6:c0e08088 r5:d8afdc5c r4:d8a8fabc
[ 76.479413] [<c0496bf8>] (cursor_timer_handler) from [<c0178744>] (call_timer_fn+0x100/0x230)
[ 76.479435] r4:c0e9192f r3:d758a340
[ 76.479465] [<c0178644>] (call_timer_fn) from [<c0178980>] (expire_timers+0x10c/0x12c)
[ 76.479495] r10:40000000 r9:c0e9192f r8:c0e92ae0 r7:d8afdccc r6:c0e19280 r5:c0496bf8
[ 76.479513] r4:d8a8fabc
[ 76.479541] [<c0178874>] (expire_timers) from [<c0179630>] (run_timer_softirq+0xa8/0x184)
[ 76.479570] r9:00000001 r8:c0e19280 r7:00000000 r6:c0e08088 r5:c0e1a3e0 r4:c0e19280
[ 76.479603] [<c0179588>] (run_timer_softirq) from [<c0102404>] (__do_softirq+0x1ac/0x3fc)
[ 76.479632] r10:c0e91680 r9:d8afc020 r8:0000000a r7:00000100 r6:00000001 r5:00000002
[ 76.479650] r4:c0eb65ec
[ 76.479686] [<c0102258>] (__do_softirq) from [<c0124d10>] (irq_exit+0xe8/0x168)
[ 76.479716] r10:d8d1a9b0 r9:d8afc000 r8:00000001 r7:d949c000 r6:00000000 r5:c0e8b3f0
[ 76.479734] r4:00000000
[ 76.479764] [<c0124c28>] (irq_exit) from [<c016b72c>] (__handle_domain_irq+0x94/0xb0)
[ 76.479793] [<c016b698>] (__handle_domain_irq) from [<c01021dc>] (bcm2835_handle_irq+0x3c/0x48)
[ 76.479823] r8:d8afdebc r7:d8afddfc r6:ffffffff r5:c0e089f8 r4:d8afddc8 r3:d8afddc8
[ 76.479851] [<c01021a0>] (bcm2835_handle_irq) from [<c01019f0>] (__irq_svc+0x70/0x98)
The problem is in the console rebinding in fbcon_fb_unbind(). It uses the
virtual console index as the new framebuffer index to bind the console(s)
to. The correct way is to use the con2fb_map lookup table to find the
framebuffer index.
Fixes: cfafca8067c6 ("fbdev: fbcon: console unregistration from unregister_framebuffer")
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Remove dependencies on HAS_DMA where a Kconfig symbol depends on another
symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST".
In most cases this other symbol is an architecture or platform specific
symbol, or PCI.
Generic symbols and drivers without platform dependencies keep their
dependencies on HAS_DMA, to prevent compiling subsystems or drivers that
cannot work anyway.
This simplifies the dependencies, and allows to improve compile-testing.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
A missing space in an error message.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: Jiri Kosina <trivial@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
The null check on &info->cmap is redundant since cmap is a struct
inside fb_info and can never be null, so the check is always true.
We may remove it.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Acked-by: Timur Tabi <timur@kernel.org>
Cc: zhong.weidong@zte.com.cn
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
There is a spelling mistake in the module parameter description, fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Michal Januszewski <spock@gentoo.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
If there are extra logos (CONFIG_FB_LOGO_EXTRA) the heights of these
extra logos are not considered when centering the first logo vertically.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
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In preparation for allowing centering of the bootup logo, make
fb_show_logo_line return where the next free framebuffer line is,
instead of returning the height of the shown logo.
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
'info->modes' got allocated with devm_kcalloc in of_get_pxafb_display.
This gives this error message:
./drivers/video/fbdev/pxafb.c:2238:2-7: WARNING: invalid free of devm_ allocated data
Fixes: c8f96304ec8b4 ("video: fbdev: pxafb: switch to devm_* API")
Cc: stable@kernel.org [v4.19+]
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Daniel Mack <daniel@zonque.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
Blitting an image with "negative" offsets is not working since there
is no clipping. It hopefully just crashes. For the bootup logo, there
is protection so that blitting does not happen as the image is drawn
further and further to the right (ROTATE_UR) or further and further
down (ROTATE_CW). There is however no protection when drawing in the
opposite directions (ROTATE_UD and ROTATE_CCW).
Add back this protection.
The regression is 20-odd years old but the mindless warning-killing
mentality displayed in commit 34bdb666f4b2 ("fbdev: fbmem: remove
positive test on unsigned values") is also to blame, methinks.
Fixes: 448d479747b8 ("fbdev: fb_do_show_logo() updates")
Signed-off-by: Peter Rosin <peda@axentia.se>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Fabian Frederick <ffrederick@users.sourceforge.net>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
cc: Geoff Levand <geoff@infradead.org>
Cc: James Simmons <jsimmons@users.sf.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
|
|
clps711x_fb_probe() increments refcnt of disp device node by
of_parse_phandle() and leaves it undecremented on both
successful and error paths.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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BACKLIGHT_CLASS_DEVICE is already tristate, but a dependency
FB_BACKLIGHT prevents it from being built as a module. There
doesn't seem to be any particularly good reason for this, so
switch FB_BACKLIGHT over to tristate.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ulf Magnusson <ulfalizer@gmail.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Hans de Goede <j.w.r.degoede@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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|
In the current kernel, then kzalloc() can't fail for small allocations,
but if it did fail then we would have a NULL dereference in the error
handling. Also in dlfb_usb_disconnect() if "info" were NULL then it
would cause an Oops inside the unregister_framebuffer() function but it
can't be NULL so let's remove that check.
Fixes: 68a958a915ca ("udlfb: handle unplug properly")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Bernie Thompson <bernie@plugable.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Wen Yang <wen.yang99@zte.com.cn>
[b.zolnierkie: added "Fixes:" tag]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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|
Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.
For instances using of_node_cmp, this has the side effect of now using
case sensitive comparisons. This should not matter for any FDT based
system which this is.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Commit '88ba95bedb79 ("backlight: pwm_bl: Compute brightness of LED
linearly to human eye")' allows the possibility to compute a default
brightness table when there isn't the brightness-levels property in the
DT. Unfortunately the changes made broke the pwm backlight for the
non-DT boards.
Usually, the non-DT boards don't pass the brightness levels via platform
data, instead, it sets the max_brightness in their platform data and the
driver calculates the level without a table. The offending patch assumed
that when there is no brightness levels table we should create one, but this
is clearly wrong for the non-DT case.
After this patch the code handles the DT and the non-DT case taking in
consideration also if max_brightness is set or not.
Fixes: 88ba95bedb79 ("backlight: pwm_bl: Compute brightness of LED linearly to human eye")
Reported-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
|
