tree 7efe13d87d7d92b1ff409455e65c85129bc30121
parent 0b1adaa031a55e44f5dd942f234bf09d28e8a0d6
author Thomas Gleixner <tglx@linutronix.de> 1269380453 +0100
committer Thomas Gleixner <tglx@linutronix.de> 1269437903 +0100

genirq: Protect access to irq_desc->action in can_request_irq()

can_request_irq() accesses and dereferences irq_desc->action w/o
holding irq_desc->lock. So action can be freed on another CPU before
it's dereferenced. Unlikely, but ...

Protect it with desc->lock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>