diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-23 09:21:41 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-23 09:21:41 +0100 |
| commit | 7acdbb3f35f4d08c0c4f7cfa306bc7006b6ba902 (patch) | |
| tree | c76aeb5996fa8f39b838e9cc41f40f854db01912 /kernel/irq/migration.c | |
| parent | Merge branch 'devicetree/for-x86' of git://git.secretlab.ca/git/linux-2.6 int... (diff) | |
| parent | Linux 2.6.38-rc6 (diff) | |
| download | linux-7acdbb3f35f4d08c0c4f7cfa306bc7006b6ba902.tar.xz linux-7acdbb3f35f4d08c0c4f7cfa306bc7006b6ba902.zip | |
Merge branch 'linus' into x86/platform
Reason: Import mainline device tree changes on which further patches
depend on or conflict.
Trivial conflict in: drivers/spi/pxa2xx_spi_pci.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.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 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); } - |