diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
| commit | 0a9d59a2461477bd9ed143c01af9df3f8f00fa81 (patch) | |
| tree | df997d1cfb0786427a0df1fbd6f0640fa4248cf4 /kernel/irq/migration.c | |
| parent | a23ce6da9677d245aa0aadc99f4197030350ab54 (diff) | |
| parent | 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 (diff) | |
| download | kernel_samsung_smdk4412-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.zip kernel_samsung_smdk4412-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.tar.gz kernel_samsung_smdk4412-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.tar.bz2 | |
Merge branch 'master' into for-next
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 1d25419..441fd62 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); } - |