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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 07:59:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-25 07:59:01 -0700 |
| commit | 3a99c6319064af3f2e18eb929f638d555dbf7a62 (patch) | |
| tree | e611927f41142123dc8efed7e07a3a91151edb01 /drivers/char/sysrq.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 (diff) | |
| parent | Merge branch 'next' into for-linus (diff) | |
| download | linux-dev-3a99c6319064af3f2e18eb929f638d555dbf7a62.tar.xz linux-dev-3a99c6319064af3f2e18eb929f638d555dbf7a62.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (75 commits)
Input: wacom - specify Cinitq supported tools
Input: ab8500-ponkey - fix IRQ freeing in error path
Input: adp5588-keys - use more obvious i2c_device_id name string
Input: ad7877 - switch to using threaded IRQ
Input: ad7877 - use attribute group to control visibility of attributes
Input: serio - add support for PS2Mult multiplexer protocol
Input: wacom - properly enable runtime PM
Input: ad7877 - filter events where pressure is beyond the maximum
Input: ad7877 - implement EV_KEY:BTN_TOUCH reporting
Input: ad7877 - implement specified chip select behavior
Input: hp680_ts_input - use cancel_delayed_work_sync()
Input: mousedev - correct lockdep annotation
Input: ads7846 - switch to using threaded IRQ
Input: serio - support multiple child devices per single parent
Input: synaptics - simplify pass-through port handling
Input: add ROHM BU21013 touch panel controller support
Input: omap4-keypad - wake-up on events & long presses
Input: omap4-keypad - fix interrupt line configuration
Input: omap4-keypad - SYSCONFIG register configuration
Input: omap4-keypad - use platform device helpers
...
Diffstat (limited to 'drivers/char/sysrq.c')
| -rw-r--r-- | drivers/char/sysrq.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index f3019f53e875..eaa5d3efa79d 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -566,10 +566,16 @@ static const unsigned char sysrq_xlate[KEY_MAX + 1] = static bool sysrq_down; static int sysrq_alt_use; static int sysrq_alt; +static DEFINE_SPINLOCK(sysrq_event_lock); static bool sysrq_filter(struct input_handle *handle, unsigned int type, unsigned int code, int value) { + bool suppress; + + /* We are called with interrupts disabled, just take the lock */ + spin_lock(&sysrq_event_lock); + if (type != EV_KEY) goto out; @@ -601,7 +607,10 @@ static bool sysrq_filter(struct input_handle *handle, unsigned int type, } out: - return sysrq_down; + suppress = sysrq_down; + spin_unlock(&sysrq_event_lock); + + return suppress; } static int sysrq_connect(struct input_handler *handler, @@ -652,8 +661,8 @@ static void sysrq_disconnect(struct input_handle *handle) } /* - * We are matching on KEY_LEFTALT insteard of KEY_SYSRQ because not all - * keyboards have SysRq ikey predefined and so user may add it to keymap + * We are matching on KEY_LEFTALT instead of KEY_SYSRQ because not all + * keyboards have SysRq key predefined and so user may add it to keymap * later, but we expect all such keyboards to have left alt. */ static const struct input_device_id sysrq_ids[] = { |