| commit | efdc64f0c792ea744bcc9203f35b908e66d42f41 | [log] [tgz] |
|---|---|---|
| author | Wang Chen <wangchen@cn.fujitsu.com> | Mon Dec 29 13:35:11 2008 +0800 |
| committer | Ingo Molnar <mingo@elte.hu> | Mon Dec 29 12:22:29 2008 +0100 |
| tree | 014d9895f776d98bf933855e5af2da99d5b34824 | |
| parent | 860cf8894b326e4b89720f520540604834337b72 [diff] |
genirq: check chip->ack before calling Impact: fix theoretical NULL dereference The generic irq layer doesn't know whether irq_chip has ack routine on some architectures or not. Upon that, before calling chip->ack, we should check that it's not NULL. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>