| commit | b3cb8674811d1851bbf1486a73d62b90c119b994 | [log] [tgz] |
|---|---|---|
| author | James Bottomley <JBottomley@Parallels.com> | Wed May 16 11:10:27 2012 +0100 |
| committer | James Bottomley <JBottomley@Parallels.com> | Wed May 16 13:15:21 2012 +0100 |
| tree | c2158cee689175a1fae57767ab8b4c955d0a237c | |
| parent | 207f583d7179f707f402c36a7bda5ca1fd03ad5b [diff] |
[PARISC] fix panic on prefetch(NULL) on PA7300LC Due to an errata, the PA7300LC generates a TLB miss interruption even on the prefetch instruction. This means that prefetch(NULL), which is supposed to be a nop on linux actually generates a NULL deref fault. Fix this by testing the address of prefetch against NULL before doing the prefetch. Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>