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drm/radeon/kms: Fix NULL ptr dereference

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radeon_atombios_fini might be call while there is not valid
atombios structure allocated, thus test for a not null ptr
before trying to access this structure.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Jerome Glisse 2009-12-09 17:39:16 +01:00 committed by Dave Airlie
parent b27b63750d
commit 4a04a844ba
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/radeon/radeon_device.c
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@ -487,8 +487,10 @@ int radeon_atombios_init(struct radeon_device *rdev)
void radeon_atombios_fini(struct radeon_device *rdev)
{
kfree(rdev->mode_info.atom_context->scratch);
kfree(rdev->mode_info.atom_context);
if (rdev->mode_info.atom_context) {
kfree(rdev->mode_info.atom_context->scratch);
kfree(rdev->mode_info.atom_context);
}
kfree(rdev->mode_info.atom_card_info);
}