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authorJerome Glisse <jglisse@redhat.com>2009-12-09 17:39:16 +0100
committerDave Airlie <airlied@redhat.com>2009-12-10 15:09:06 +1000
commit4a04a844ba0c09b5641bf2ebd9f9517aa76e52fb (patch)
treeb859af52ab72db2632e0d7da7cc0cf6552f3d136
parentb27b63750d912e80d61d2120c4a1664062d0f808 (diff)
drm/radeon/kms: Fix NULL ptr dereference
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>
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 7e55647f118..410859ee112 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -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);
}