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drm/radeon/kms: allow "invalid" DB formats as a means to disable DB

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Signed-off-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Marek Olšák
2012-07-29 16:24:57 +02:00
committed by Dave Airlie
parent 0d7614f09c
commit 0f457e488c
4 changed files with 12 additions and 5 deletions
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6
drivers/gpu/drm/radeon/evergreen_cs.c
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@@ -961,13 +961,15 @@ static int evergreen_cs_track_check(struct radeon_cs_parser *p)
if (track->db_dirty) {
/* Check stencil buffer */
if (G_028800_STENCIL_ENABLE(track->db_depth_control)) {
if (G_028044_FORMAT(track->db_s_info) != V_028044_STENCIL_INVALID &&
G_028800_STENCIL_ENABLE(track->db_depth_control)) {
r = evergreen_cs_track_validate_stencil(p);
if (r)
return r;
}
/* Check depth buffer */
if (G_028800_Z_ENABLE(track->db_depth_control)) {
if (G_028040_FORMAT(track->db_z_info) != V_028040_Z_INVALID &&
G_028800_Z_ENABLE(track->db_depth_control)) {
r = evergreen_cs_track_validate_depth(p);
if (r)
return r;