diff options
| author | Ingo Molnar <mingo@elte.hu> | 2011-02-14 13:18:51 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-02-14 13:18:56 +0100 |
| commit | 91e04ec05838a5b2c790decf2a91af98cb1666e8 (patch) | |
| tree | ea7373bdfab118ab6312ed3fa1fc0694ccfb38db /kernel/irq/migration.c | |
| parent | 792363d2beceb1c7d865e517fa9939c8b8c1442a (diff) | |
| parent | 100b33c8bd8a3235fd0b7948338d6cbb3db3c63d (diff) | |
Merge commit 'v2.6.38-rc4' into x86/cpu
Merge reason: pick up the latest fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 1d2541940480..441fd629ff04 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); } - |