diff options
| author | James Bottomley <JBottomley@Parallels.com> | 2012-05-16 11:10:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 15:12:53 +0800 |
| commit | 63ce590e41683a7ba1895a1d79b29a62b06c7613 (patch) | |
| tree | 896d37da279ae651d74bc75daa84d3b9fb8bfcfe /Documentation/acpi | |
| parent | 2952561d79919e78efee8d43b499aa4d21453f03 (diff) | |
PARISC: fix panic on prefetch(NULL) on PA7300LC
commit b3cb8674811d1851bbf1486a73d62b90c119b994 upstream.
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.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/acpi')
0 files changed, 0 insertions, 0 deletions