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authorThomas Gleixner <tglx@linutronix.de>2011-02-12 12:10:49 +0100
committerThomas Gleixner <tglx@linutronix.de>2011-02-19 12:58:06 +0100
commit43abe43ce0619d744c7a5bb15cce075e532b53b7 (patch)
treef915103a0d1d671d2f537c7852869b7ca4a0078b /kernel/irq/manage.c
parente7bcecb7b1d29b9ad5af939149a945658620ca8f (diff)
downloadlinux-stericsson-43abe43ce0619d744c7a5bb15cce075e532b53b7.tar.gz
genirq: Add missing buslock to set_irq_type(), set_irq_wake()
chips behind a slow bus cannot update the chip under desc->lock, but we miss the chip_buslock/chip_bus_sync_unlock() calls around the set type and set wake functions. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq/manage.c')
-rw-r--r--kernel/irq/manage.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ba84307fbf24..a400db220cf3 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -454,6 +454,7 @@ int set_irq_wake(unsigned int irq, unsigned int on)
/* wakeup-capable irqs can be shared between drivers that
* don't need to have the same sleep mode behaviors.
*/
+ chip_bus_lock(desc);
raw_spin_lock_irqsave(&desc->lock, flags);
if (on) {
if (desc->wake_depth++ == 0) {
@@ -476,6 +477,7 @@ int set_irq_wake(unsigned int irq, unsigned int on)
}
raw_spin_unlock_irqrestore(&desc->lock, flags);
+ chip_bus_sync_unlock(desc);
return ret;
}
EXPORT_SYMBOL(set_irq_wake);