| Commit message (Collapse) | Author | Age | Files | Lines |
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Convert internal semaphore to a mutex
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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backlight_device->sem has a very specific use as documented in the
header file. The external users of this are using it for a different
reason, to serialise access to the update_status() method.
backlight users were supposed to implement their own internal
serialisation of update_status() if needed but everyone is doing
things differently and incorrectly. Therefore add a global mutex to
take care of serialisation for everyone, once and for all.
Locking for get_brightness remains optional since most users don't
need it.
Also update the lcd class in a similar way.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Since people use this code as an example, clean it up to
to use platform_*_drvdata instead of a global variable.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Since people use this code as an example, clean it up to
to use platform_*_drvdata and remove an unneeded function.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Remove excessive numbers of (un)likely()s in the backlight core.
There are no hot paths in this code so rely on compiler to do
the right thing.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Remove uneeded owner field from backlight_properties structure.
Nothing uses it and it is unlikely that it will ever be used. The
backlight class uses other means to ensure that nothing references
unloaded code.
Based on a patch from Dmitry Torokhov <dtor@insightbb.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Fix error handling when registering new device
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Add control of LCD backlight for Frontpath ProGear HX1050+.
Patch is based on http://downloads.sf.net/progear/progear-lcd-0.2.tar.gz
driver by M Schacht.
Signed-off-by: Marcin Juszkiewicz <openembedded@hrw.one.pl>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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Add myself as the backlight class/subsystem maintainer.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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The rename of the AT91 subtree from mach-at91rm9200 to mach-at91
(to accomodate at91sam926x processors) was incomplete. It needs
this patch to be able to build again.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[NET] Eliminate user-selectable CONFIG_MV643XX_ETH_[012]
[MIPS] Drop __init from init_8259A()
[MIPS] Fix Kconfig typo bug
[MIPS] Fix double signal on trap and break instruction
[MIPS] sigset_32 has been made redundand by compat_sigset_t.
[MIPS] emma2rh: Remove needless <asm/i8259.h> inclusion.
[MIPS] Add MTD device support for Cobalt
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Remove the use of CONFIG_MV643XX_ETH_[012] variables on most platforms.
Instead, platform-specific code enables the ports supported by the
hardware. After this patch, these config variables are only used in
arch/ppc, so also move them from drivers/net/Kconfig to arch/ppc/Kconfig.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Cc: Paul Mackerras <paulus@samba.org>
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init_8259A() is called from i8259A_resume() so should not be marked as
__init. And add some tests for whether 8259A was already initialized
or not.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This commit broke gdb, since any BREAK or TRAP instruction cause SIGSEGV.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch has added MTD device support for Cobalt.
Moreover, removes old type FlashROM support.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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tty_register_driver: Remove incorrect and superfluous cast (expected and passed
types are both const char *)
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Cobalt: Fix UART I/O type
[MIPS] Fixup copy_from_user_inatomic
[MIPS] Fix struct sigcontext for N32 userland
[MIPS] Make some __setup functions static
[MIPS] Declare highstart_pfn, highend_pfn only if CONFIG_HIGHMEM=y
[MIPS] Allow selection of KGDB only on platforms where it's supported.
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The Cobalt UART is actually connected to memory resource area.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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From the 01408c4939479ec46c15aa7ef6e2406be50eeeca log message:
The problem is that when we write to a file, the copy from userspace to
pagecache is first done with preemption disabled, so if the source
address is not immediately available the copy fails *and* *zeros* *the*
*destination*.
This is a problem because a concurrent read (which admittedly is an odd
thing to do) might see zeros rather that was there before the write, or
what was there after, or some mixture of the two (any of these being a
reasonable thing to see).
If the copy did fail, it will immediately be retried with preemption
re-enabled so any transient problem with accessing the source won't
cause an error.
The first copying does not need to zero any uncopied bytes, and doing
so causes the problem. It uses copy_from_user_atomic rather than
copy_from_user so the simple expedient is to change copy_from_user_atomic
to *not* zero out bytes on failure.
< --- end cite --- >
This patch finally implements at least a not so pretty solution by
duplicating the relevant part of __copy_user.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The kernel use 64-bit for sc_regs[0], and both N32/N64 userland
expects it was 64-bit. But size of 'long' on N32 is actually 32-bit.
So this definition make some confusion. Use __u32 and __u64 for
N32/N64 sigcontext to get rid of this confusion.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This fixes some sparse warnings. ("warning: symbol 'foo' was not
declared. Should it be static?")
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Due to type confusion, when an nfsacl verison 2 'ACCESS' request
finishes and tries to clean up, it calls fh_put on entiredly the
wrong thing and this can cause an oops.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The broadcast functionality is only necessary when a local APIC is
available. Make the config switch depend on X86_LOCAL_APIC. This
resolves the mach-voyager breakage introduced by the tick managament
code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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powerpc gets:
init/main.c: In function `do_basic_setup':
init/main.c:714: warning: implicit declaration of function `init_irq_proc'
but we cannot include linux/irq.h in generic code.
Fix it by moving the declaration into linux/interrupt.h instead.
And make sure all code that defines init_irq_proc() is including
linux/interrupt.h.
And nuke an ifdef-in-C
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A user-specified get_nlinks may depend on other inode attributes.
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The BUG_ON() in tick_nohz_stop_sched_tick() triggers on some boxen.
Remove the BUG_ON and print information about the pending softirq
to allow better debugging of the problem.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When a CPU is needed for RCU the tick has to continue even when it was
stopped before.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] machzwd warning fix
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From: Andrew Morton <akpm@linux-foundation.org>
drivers/char/watchdog/machzwd.c: In function 'zf_ioctl':
drivers/char/watchdog/machzwd.c:327: warning: passing argument 1 of 'zf_ping' makes integer from pointer without a cast
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Update defconfigs
[MIPS] Support for several more SNI RM models.
[MIPS] Include <asm/bugs> to for declaration of check_bugs32.
[MIPS] Add external declaration of pagetable_init() to pgalloc.h
[MIPS] Make kernel_thread_helper() static
[MIPS] Make __declare_dbe_table static and avoid it getting optimized away
[MIPS] Use MIPS R2 instructions for bitops.
[MIPS] signals: Share even more code.
[MIPS] Fix CONFIG_MIPS32_N32=y CONFIG_MIPS32_O32=n build
[MIPS] Iomap implementation.
[MIPS] <asm/compat-signal.h> needs to include <asm/uaccess.h>.
[MIPS] IP27: Fix warning.
[MIPS] Fix sigset_t endianess swapping issues in 32-bit compat code.
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This fixes some sparse warnings.
pgtable-32.c:15:6: warning: symbol 'pgd_init' was not declared. Should it be static?
pgtable-32.c:32:13: warning: symbol 'pagetable_init' was not declared. Should it be static?
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add R2 optimized variants of clear_bit, set_bit and test_and_clear_bit.
With gcc 4.1.1 this saves 1592 bytes on a defconfig (minus IPv6) kernel.
Turns out that R2 bitop instructions are no gain for the other bitop
functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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native and compat do_signal and handle_signal are identical and can easily
be unified.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This implementation has support for the concept of one separate ioport
address space by PCI domain. A pointer to the virtual address where
the port space of a domain has been mapped has been added to struct
pci_controller and systems should be fixed to fill in this value. For
single domain systems this will be the same value as passed to
set_io_port_base().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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access_ok in compat-signal.h is wrong (checking destination instead of
source) and redundant (already checked before calling this function).
Also sf_mask in struct sigframe32 should be compat_sigset_t type.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
hwmon/vt1211: Add probing of alternate config index port
hwmon/f71805f: Fix a race condition
hwmon/abituguru: Fix unchecked return status
hwmon: New driver for the Analog Devices ADM1029
hwmon/w83627ehf: Add support for the W83627DHG chip
hwmon: Use subsys_initcall
hwmon/lm70: Make lm70_remove a __devexit function
hwmon: Cleanup a bogus legacy comment
hwmon: Simplify the locking model of two drivers
hwmon: Drop unused mutexes in two drivers
hwmon/it87: Add PWM base frequency control
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The configuration index port of the vt1211 can be accessed at two
different addresses 0x2e or 0x4e, depending on pin strappings. This
patch adds support to scan both addresses during module
initialization.
Signed-off-by: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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