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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-03-06 23:18:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 10:32:53 -0700 |
| commit | c847ac8e8e7447730aef70b94915f1c0880e6578 (patch) | |
| tree | dbc1fb211b26eb9f7cc59d38641e4779e1ede88d /kernel/sysctl_check.c | |
| parent | d7838b04ecb08709b09063a8ada0aa2d29636c12 (diff) | |
| download | kernel_samsung_smdk4412-c847ac8e8e7447730aef70b94915f1c0880e6578.zip kernel_samsung_smdk4412-c847ac8e8e7447730aef70b94915f1c0880e6578.tar.gz kernel_samsung_smdk4412-c847ac8e8e7447730aef70b94915f1c0880e6578.tar.bz2 | |
genirq: Clear action->thread_mask if IRQ_ONESHOT is not set
commit 52abb700e16a9aa4cbc03f3d7f80206cbbc80680 upstream.
Xommit ac5637611(genirq: Unmask oneshot irqs when thread was not woken)
fails to unmask when a !IRQ_ONESHOT threaded handler is handled by
handle_level_irq.
This happens because thread_mask is or'ed unconditionally in
irq_wake_thread(), but for !IRQ_ONESHOT interrupts never cleared. So
the check for !desc->thread_active fails and keeps the interrupt
disabled.
Keep the thread_mask zero for !IRQ_ONESHOT interrupts.
Document the thread_mask magic while at it.
Reported-and-tested-by: Sven Joachim <svenjoac@gmx.de>
Reported-and-tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sysctl_check.c')
0 files changed, 0 insertions, 0 deletions