From 43abe43ce0619d744c7a5bb15cce075e532b53b7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 12 Feb 2011 12:10:49 +0100 Subject: [PATCH] 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 --- kernel/irq/chip.c | 2 ++ kernel/irq/manage.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index baa5c4acad8..9639ab8bece 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -65,9 +65,11 @@ int set_irq_type(unsigned int irq, unsigned int type) if (type == IRQ_TYPE_NONE) return 0; + chip_bus_lock(desc); raw_spin_lock_irqsave(&desc->lock, flags); ret = __irq_set_trigger(desc, irq, type); raw_spin_unlock_irqrestore(&desc->lock, flags); + chip_bus_sync_unlock(desc); return ret; } EXPORT_SYMBOL(set_irq_type); diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index ba84307fbf2..a400db220cf 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); -- 2.39.5