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authorJames Bottomley <JBottomley@Parallels.com>2012-05-16 10:10:27 (GMT)
committerJames Bottomley <JBottomley@Parallels.com>2012-05-16 12:15:21 (GMT)
commitb3cb8674811d1851bbf1486a73d62b90c119b994 (patch)
treec2158cee689175a1fae57767ab8b4c955d0a237c /lib/plist.c
parent207f583d7179f707f402c36a7bda5ca1fd03ad5b (diff)
downloadlinux-fsl-qoriq-b3cb8674811d1851bbf1486a73d62b90c119b994.tar.xz
[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>
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