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drm/radeon: fix a bogus kfree

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parser->chunks[.].kpage[.] is not always kmalloc-ed
by the parser initialization, so parser_fini should
not try to kfree it if it didn't allocate it.

This patch fixes a kernel oops that can be provoked
in UMS mode.

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Ilija Hadzic 2013-01-07 18:21:58 -05:00 committed by Alex Deucher
parent ff4bd08277
commit a6b7e1a02b
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/radeon/r600_cs.c
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@ -2476,8 +2476,10 @@ static void r600_cs_parser_fini(struct radeon_cs_parser *parser, int error)
kfree(parser->relocs);
for (i = 0; i < parser->nchunks; i++) {
kfree(parser->chunks[i].kdata);
kfree(parser->chunks[i].kpage[0]);
kfree(parser->chunks[i].kpage[1]);
if (parser->rdev && (parser->rdev->flags & RADEON_IS_AGP)) {
kfree(parser->chunks[i].kpage[0]);
kfree(parser->chunks[i].kpage[1]);
}
}
kfree(parser->chunks);
kfree(parser->chunks_array);