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drm/radeon/kms: Fix oops after radeon_cs_parser_init() failure. 

If radeon_cs_parser_init() fails, radeon_cs_ioctl() calls
radeon_cs_parser_fini() with the non-zero error value. The latter dereferenced
parser->ib which hasn't been initialized yet -> boom. Add a test for parser->ib
being non-NULL before dereferencing it.

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Michel Dänzer 2010-01-22 09:20:00 +01:00 committed by Dave Airlie
parent f71d018798
commit 17aafccab4
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/radeon/radeon_cs.c
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@ -189,7 +189,7 @@ static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
{
unsigned i;
if (error) {
if (error && parser->ib) {
radeon_bo_list_unvalidate(&parser->validated,
parser->ib->fence);
} else {