diff options
| author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 09:56:40 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-17 09:56:55 -0800 |
| commit | 66b0835e2bb3d345f060a47bb8c8f883bd25ec2b (patch) | |
| tree | d1fc390dfa58f131df908267d87ef99d4522a596 /kernel/irq/migration.c | |
| parent | 479b46b5599b1e610630d7332e168c1f9c4ee0b4 (diff) | |
| parent | 85e2efbb1db9a18d218006706d6e4fbeb0216213 (diff) | |
Merge 2.6.38-rc5 into usb-next
This is needed to resolve some merge conflicts that were found
in the USB host controller patches, and reported by Stephen Rothwell.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel/irq/migration.c')
| -rw-r--r-- | kernel/irq/migration.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c index 1d254194048..441fd629ff0 100644 --- a/kernel/irq/migration.c +++ b/kernel/irq/migration.c @@ -56,6 +56,7 @@ void move_masked_irq(int irq) void move_native_irq(int irq) { struct irq_desc *desc = irq_to_desc(irq); + bool masked; if (likely(!(desc->status & IRQ_MOVE_PENDING))) return; @@ -63,8 +64,15 @@ void move_native_irq(int irq) if (unlikely(desc->status & IRQ_DISABLED)) return; - desc->irq_data.chip->irq_mask(&desc->irq_data); + /* + * Be careful vs. already masked interrupts. If this is a + * threaded interrupt with ONESHOT set, we can end up with an + * interrupt storm. + */ + masked = desc->status & IRQ_MASKED; + if (!masked) + desc->irq_data.chip->irq_mask(&desc->irq_data); move_masked_irq(irq); - desc->irq_data.chip->irq_unmask(&desc->irq_data); + if (!masked) + desc->irq_data.chip->irq_unmask(&desc->irq_data); } - |