diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-05 21:49:57 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-05 21:50:05 +0100 |
| commit | 285c1a2c3a5f84ce1c811ab4cb1f8a17466e1a06 (patch) | |
| tree | 7eb4aeab927a25b6cc82aef21ffd5a4f4866ae4b /kernel/irq | |
| parent | 1fb0ef31f428f345a7c3666f8e7444a563edd537 (diff) | |
| parent | a9fe8d5fd52ecd17c3f3970bbcf6b3573f831898 (diff) | |
| download | linux-285c1a2c3a5f84ce1c811ab4cb1f8a17466e1a06.tar.gz linux-285c1a2c3a5f84ce1c811ab4cb1f8a17466e1a06.tar.bz2 linux-285c1a2c3a5f84ce1c811ab4cb1f8a17466e1a06.zip | |
Merge branch 'irq/urgent' into irq/core
Reason: Get mainline fixes integrated. Further patches conflict with
them
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/irq')
| -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); } - |