| Commit message (Collapse) | Author | Age | Files | Lines |
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
math-emu: Fix thinko in _FP_DIV
math-emu: Fix signalling of underflow and inexact while packing result.
sparc: Add checkstack support
sparc: correct section of current_pc()
sparc: correct section of apc_no_idle
sparc64: Fix race in arch/sparc64/kernel/trampoline.S
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In commit 48d6c64311ddb6417b901639530ccbc47bdc7635 ("math-emu: Add
support for reporting exact invalid exception") code was added to
set the new FP_EX_INVALID_{IDI,ZDZ} exception flag bits.
However there is a missing break statement for the
_FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_INF) switch case, the
code just falls into _FP_CLS_COMBINE(FP_CLS_ZERO,FP_CLS_ZERO)
which then proceeds to overwrite all of the settings.
Fix by adding the missing break.
Signed-off-by: David S. Miller <davem@davemloft.net>
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I'm trying to move the powerpc math-emu code to use the include/math-emu bits.
In doing so I've been using TestFloat to see how good or bad we are
doing. For the most part the current math-emu code that PPC uses has
a number of issues that the code in include/math-emu seems to solve
(plus bugs we've had for ever that no one every realized).
Anyways, I've come across a case that we are flagging underflow and
inexact because we think we have a denormalized result from a double
precision divide:
000.FFFFFFFFFFFFF / 3FE.FFFFFFFFFFFFE
soft: 001.0000000000000 ..... syst: 001.0000000000000 ...ux
What it looks like is the results out of FP_DIV_D are:
D:
sign: 0
mantissa: 01000000 00000000
exp: -1023 (0)
The problem seems like we aren't normalizing the result and bumping the exp.
Now that I'm digging into this a bit I'm thinking my issue has to do with
the fix DaveM put in place from back in Aug 2007 (commit
405849610fd96b4f34cd1875c4c033228fea6c0f):
[MATH-EMU]: Fix underflow exception reporting.
2) we ended up rounding back up to normal (this is the case where
we set the exponent to 1 and set the fraction to zero), this
should set inexact too
...
Another example, "0x0.0000000000001p-1022 / 16.0", should signal both
inexact and underflow. The cpu implementations and ieee1754
literature is very clear about this. This is case #2 above.
Here is the distilled glibc test case from Jakub Jelinek which prompted that
commit:
--------------------
#include <float.h>
#include <fenv.h>
#include <stdio.h>
volatile double d = DBL_MIN;
volatile double e = 0x0.0000000000001p-1022;
volatile double f = 16.0;
int
main (void)
{
printf ("%x\n", fetestexcept (FE_UNDERFLOW));
d /= f;
printf ("%x\n", fetestexcept (FE_UNDERFLOW));
e /= f;
printf ("%x\n", fetestexcept (FE_UNDERFLOW));
return 0;
}
--------------------
It looks like the case I have we are exact before rounding, but think it
looks like the rounding case since it appears as if "overflow is set".
000.FFFFFFFFFFFFF / 3FE.FFFFFFFFFFFFE = 001.0000000000000
I think the following adds the check for my case and still works for the
issue your commit was trying to resolve.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add sparc support to checkstack.
Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Latest mainline gives this section mismatch on sparc:
The function current_pc() references
the variable __init no_sun4u_here.
This is often because current_pc lacks a __init
annotation or the annotation of no_sun4u_here is wrong.
Since current_pc() is used only in early time, it is correct to
put it in .init section.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The latest mainline gives this section mismatch on sparc:
The function __devinit apc_probe() references
a variable __initdata apc_no_idle.
If apc_no_idle is only used by apc_probe then
annotate apc_no_idle with a matching annotation.
Since the commit 7e7e2f035663c5ceb029bfb9d91e75099b0a5625,
apc_probe() is on __devinit so we have to correct apc_no_idle
which is referenced by this function.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make arch/sparc64/kernel/trampoline.S in 2.6.27.1 lock prom_entry_lock
when calling the PROM. This prevents a race condition that I observed
causing a hang on startup on a 12-CPU E4500.
I am not subscribed to this list, so please CC me on replies.
Signed-off-by: Andrea Shepard <andrea@persephoneslair.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: drivers/ide/generic.c -> drivers/ide/ide-pci-generic.c
ide-disk: set non-rotational queue flag for SSD and CF devices
ide-cd: add TEAC CD-224E to the NO_AUTOCLOSE list
ide: Add tx4938ide driver (v2)
TXx9: Add TX4938 ATA support (v3)
ide: Add tx4939ide driver (v6)
ide: two more pci_ioremap_bar() conversions
pci: use pci_ioremap_bar() in drivers/ide
sgiioc4: use ide_host_add() (take 2)
sgiioc4: fix error cleanup path (take 2)
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Suggested-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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The "TEAC CD-ROM CD-224E" cannot close its tray, so add it to the NO_AUTOCLOSE
list. This will correct the "Can close tray" field of /proc/sys/dev/cdrom/info.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
[bart: minor fixups to patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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This is the driver for the Toshiba TX4938 SoC EBUS controller ATA mode.
It has custom set_pio_mode and some hacks for big endian.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: ralf@linux-mips.org
Cc: sshtylyov@ru.mvista.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Add a helper routine to register tx4938ide driver and use it on
RBTX4938 board.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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This is the driver for the Toshiba TX4939 SoC ATA controller.
This controller has standard ATA taskfile registers and DMA
command/status registers, but the register layout is swapped on big
endian. There are some other endian issue and some special registers
which requires many custom dma_ops/tp_ops routines and build_dmatable.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: ralf@linux-mips.org
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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based on suggestion from Sergei Shtylyov, there are two more places
where using pci_ioremap_bar() makes sense.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Use the newly introduced pci_ioremap_bar() function in drivers/ide.
pci_ioremap_bar() just takes a pci device and a bar number, with the goal
of making it really hard to get wrong, while also having a central place
to stick sanity checks.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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Convert the driver to use ide_host_add() -- this seems to be a straightforward
change which I'm not sure why hasn't been done yet...
While doing this at last, get rid of:
- useless local copy of the 'sgiioc4_port_info' variable;
- unnecessary 'goto' and label...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: jeremy@sgi.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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The driver "forgot" to call iounmap() iff request_mem_region() call failed in
sgiioc4_ide_setup_pci_device()...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: jeremy@sgi.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds/acpi: Fix merge fallout from acpi_driver_data change
leds: Simplify logic in leds-ams-delta
leds: Fix trigger registration race
leds: Fix leds-class.c comment
leds: Add driver for HP harddisk protection LEDs
leds: leds-pca955x - Mark pca955x_led_set() static
leds: Remove uneeded leds-cm-x270 driver
leds: Remove uneeded strlen calls
leds: Add leds-wrap default-trigger
leds: Make default trigger fields const
leds: Add backlight LED trigger
leds: da903x: Add support for LEDs found on DA9030/DA9034
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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Simplify logic in leds-ams-delta after various new drivers
writers misunderstood it.
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Fix a race during trigger registration where we could try and use a lock
before it was initialised.
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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led_classdev_unregister() has no "__" prefix, remove it.
Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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HP notebooks contain accelerometer-based disk protection subsystem,
and LED that indicates hard disk is protected. This is driver for the
LED part.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Mark pca955x_led_set() as static
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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The cm-x270 board uses leds-gpio so remove the now unneeded driver.
Acked-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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There's no need for the additional call to strlen(), we can directly
return the value returned by sprintf(). We now return a length value
that doesn't include the final '\0', but user space shouldn't bother
about it anyway.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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The power led is normally lit after boot, let's use the default-on
trigger as the default trigger for it. This gets the initial brightness
value right and being on is the default behaviour we expect for a power
led.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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The default_trigger fields of struct gpio_led and thus struct
led_classdev are pretty much always assigned from a string literal,
which means the string can't be modified. Which is fine, since there is
no reason to modify the string and in fact it never is.
But they should be marked const to prevent such code from being added,
to prevent warnings if -Wwrite-strings is used, when assigned from a
constant string other than a string literal (which produces a warning
under current kernel compiler flags), and for general good coding
practices.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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This allows LEDs to be controlled as a backlight device where
they turn off and on when the display is blanked and unblanked.
This is useful where you need various key backlight LEDs to
dim at the same time as the backlight.
Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] pxa: corgi backlight driver should not select ssp drivers
[ARM] 5321/1: Kirkwood: fix typo in Makefile
[ARM] 5320/1: fix assembly constraints in implementation of do_div()
[ARM] 5318/1: Swap the PRRR and NMRR values in proc-v7.S
[ARM] 5316/1: AT91: oops (regression) fix on gpio irq
[ARM] msm: vreg interface to msm7k pmic
[ARM] msm: dma: various basic dma improvements and bugfixes
[ARM] msm: clock: provide clk_*() api support for
[ARM] msm: clean up iomap and devices
[ARM] msm: add proc_comm support, necessary for clock and power control
[ARM] msm: rename ARCH_MSM7X00A to ARCH_MSM
[ARM] pxa/spitz: fix unbalance parenthesis in header file spitz.h
[ARM] pxa: update {corgi,spitz}_defconfig to favor SPI-based drivers
[ARM] pxa: fix the corgi_ssp.c dependency issue in {corgi,spitz}_defconfig
Revert "[ARM] pxa/corgi: remove now unused corgi_ssp.c and corgi_lcd.c"
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Resolves build errors with eseries and magician defconfigs (which
make use of the corgi backlight driver.)
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Those inline assembly segments using the umlal instruction must have
the & modifier so to be sure that a purely input register won't alias
one of the registers used as input+output. In most cases, the inputs
are still used after the outputs are touched, and most binutil versions
insist on "rdhi, rdlo and rm must all be different" even for ARMv6+.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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A typo caused these values to be swapped leading to incorrect memory
type attributes.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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From: David Brownell <dbrownell@users.sourceforge.net>
The "5298/1: Drop desc_handle_irq()" patch went overboard
and deleted an essential line of code, causing all AT91
GPIO interrupts to oops (in irq). Trimmed example:
Unable to handle kernel NULL pointer dereference at virtual address 000000c4
...
PC is at gpio_irq_handler+0x78/0xd0
LR is at gpio_irq_handler+0x38/0xd0
...
Backtrace:
[<c0029884>] (gpio_irq_handler+0x0/0xd0) from [<c0020054>] (__exception_text_start+0x54/0x7c)
[<c0020000>] (__exception_text_start+0x0/0x7c) from [<c00209ec>] (__irq_svc+0x2c/0x60)
Exception stack(0xc1c1de00 to 0xc1c1de48)
[<c01f4ca8>] (_spin_unlock_irq+0x0/0x3c) from [<c01389f8>] (at91ether_open+0x220/0x318)
[<c01387d8>] (at91ether_open+0x0/0x318) from [<c018caa4>] (dev_open+0xa8/0x10c)
[<c018c9fc>] (dev_open+0x0/0x10c) from [<c018b874>] (dev_change_flags+0x98/0x164)
[<c018b7dc>] (dev_change_flags+0x0/0x164) from [<c0019f8c>] (ip_auto_config+0x164/0xe28)
[<c0019e28>] (ip_auto_config+0x0/0xe28) from [<c0020318>] (__exception_text_end+0x60/0x180)
[<c00202b8>] (__exception_text_end+0x0/0x180) from [<c0008738>] (kernel_init+0x70/0xd8)
[<c00086c8>] (kernel_init+0x0/0xd8) from [<c00398e0>] (do_exit+0x0/0x6ac)
This patch restores the missing line'o'code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The baseband cpu owns the pmic, so voltage regulator control is only
available via a relatively limited interface through the proc_comm
transport.
Signed-off-by: Brian Swetland <swetland@google.com>
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San:
- Propagate DM errors to the originator of the request.
- Implement msm_dmov_stop_cmd()
- Add return value to init code
- Modify msm_dmov_stop_cmd() to support ungraceful flushing
Arve:
- Disable datamover interrupt when not in use.
We turn off the interrrupt to allow power collapse from idle.
Signed-off-by: San Mehat <san@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Brian Swetland <swetland@google.com>
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Makes use of the proc_comm interface to provide clock control on
MSM7X01A family SoCs.
Signed-off-by: Brian Swetland <swetland@google.com>
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- Add some more peripherals (sdcc, etc) to the iomap.
- Remove virtual base addresses for devices that we should be passing
physical addresses to drivers via resources and ioremap()ing.
- don't try to use uarts for ll debug once the mmu is enabled due to
problems with the peripheral window
- make base addresses void __iomem * and fixup irq.c and timer.c
- Remove common.c and bring in devices.c/devices.h similar to
the PXA architecture.
Signed-off-by: Brian Swetland <swetland@google.com>
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The proc_comm protocol is the lowest level protocol available for
communicating with the modem core. It provides access to clock and
power control, among other things, and is safe for use from atomic
contexts, unlike the higher level SMD and RPC transports.
Signed-off-by: Brian Swetland <swetland@google.com>
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The MSM architecture covers a wider family of chips than just the MSM7X00A.
Move to a more generic name, in perparation for supporting the specific
SoC variants as sub-architectures (ARCH_MSM7X01A, ARCH_MSM722X, etc). This
gives us ARCH_MSM for the (many) common peripherals.
This also removes the unused/obsolete config item MSM7X00A_IDLE.
Signed-off-by: Brian Swetland <swetland@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel
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Hello,
Introduced by:
commit fff147208b48680cb7b627a144113a6585828a0e
Author: Eric Miao <eric.miao@marvell.com>
Date: Fri Sep 5 22:15:23 2008 +0800
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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Recent changes have been made to use the generic SPI-based ads7846
touch screen driver and a generic SPI-based corgi-type LCD/backlight
driver. Update the {corgi,spitz}_defconfig to favor the use of these
drivers instead of the legacy ones.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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Separate building of corgi_ssp.c, and introduce a new hidden config option
CONFIG_CORGI_SSP_DEPRECATED for this. Aslo mark corgi_ts.c and corgi_bl.c
as deprecated.
This unbreaks the legacy configs in {corgi,spitz}_defconfig, however, SPI
based ADS7846 touchscreen driver and a new SPI-based corgi_lcd.c driver
with integrated backlight support are recommended.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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This reverts commit 68677ab3d08ed6d57be0c1ae4e4d364bb2d104b6.
A smoother migration path would be making corgi_ts.c and other drivers
depending on corgi_ssp.c and corgi_lcd.c to depend on BROKEN instead,
and still allows those to exist around for some time.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
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* 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight:
backlight: Add driver for Tabletkiosk Sahara TouchIT-213 Tablet PC
backlight: da903x: Add backlight driver for DA9030/DA9034
tosa: add support for bl/lcd driver
backlight: add support for Sharp SL-6000 LCD and backlight drivers
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