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author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-18 20:11:27 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-18 20:11:27 (GMT) |
commit | 80ae3fa5d6712ef3625eff617f72e190645d6361 (patch) | |
tree | fd9be0ecbb4baa6385aa1a75af7ced5f7d691be4 /drivers/tty/sysrq.c | |
parent | 59db5b2b9e0327e545ff5764dadcb26062c2ab1f (diff) | |
parent | 85e2efbb1db9a18d218006706d6e4fbeb0216213 (diff) | |
download | linux-80ae3fa5d6712ef3625eff617f72e190645d6361.tar.xz |
Merge 2.6.38-rc5 into staging-next
This is to resolve a merge conflict with:
drivers/staging/zram/zram_drv.c
as pointed out by Stephen Rothwell
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty/sysrq.c')
-rw-r--r-- | drivers/tty/sysrq.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 8e0dd25..81f1395 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -571,6 +571,7 @@ struct sysrq_state { unsigned int alt_use; bool active; bool need_reinject; + bool reinjecting; }; static void sysrq_reinject_alt_sysrq(struct work_struct *work) @@ -581,6 +582,10 @@ static void sysrq_reinject_alt_sysrq(struct work_struct *work) unsigned int alt_code = sysrq->alt_use; if (sysrq->need_reinject) { + /* we do not want the assignment to be reordered */ + sysrq->reinjecting = true; + mb(); + /* Simulate press and release of Alt + SysRq */ input_inject_event(handle, EV_KEY, alt_code, 1); input_inject_event(handle, EV_KEY, KEY_SYSRQ, 1); @@ -589,6 +594,9 @@ static void sysrq_reinject_alt_sysrq(struct work_struct *work) input_inject_event(handle, EV_KEY, KEY_SYSRQ, 0); input_inject_event(handle, EV_KEY, alt_code, 0); input_inject_event(handle, EV_SYN, SYN_REPORT, 1); + + mb(); + sysrq->reinjecting = false; } } @@ -599,6 +607,13 @@ static bool sysrq_filter(struct input_handle *handle, bool was_active = sysrq->active; bool suppress; + /* + * Do not filter anything if we are in the process of re-injecting + * Alt+SysRq combination. + */ + if (sysrq->reinjecting) + return false; + switch (type) { case EV_SYN: @@ -629,7 +644,7 @@ static bool sysrq_filter(struct input_handle *handle, sysrq->alt_use = sysrq->alt; /* * If nothing else will be pressed we'll need - * to * re-inject Alt-SysRq keysroke. + * to re-inject Alt-SysRq keysroke. */ sysrq->need_reinject = true; } |