3.8.13.7 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Alex Deucher <alexander.deuc...@amd.com>

commit 03ed8cf9b28d886c64c7e705c7bb1a365fd8fb95 upstream.

Hopefully avoid more quirks in the future due to bogus
vbios dac data.

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
 drivers/gpu/drm/radeon/radeon_combios.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c 
b/drivers/gpu/drm/radeon/radeon_combios.c
index 8528b81..485f82c 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -965,8 +965,10 @@ struct radeon_encoder_primary_dac 
*radeon_combios_get_primary_dac_info(struct
                        dac = RBIOS8(dac_info + 0x3) & 0xf;
                        p_dac->ps2_pdac_adj = (bg << 8) | (dac);
                }
-               /* if the values are all zeros, use the table */
-               if (p_dac->ps2_pdac_adj)
+               /* if the values are zeros, use the table */
+               if ((dac == 0) || (bg == 0))
+                       found = 0;
+               else
                        found = 1;
        }
 
-- 
1.8.1.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to