[245/272] radeon/kms: fix dp displayport mode validation

[Greg KH]

2.6.37-stable review patch.  If anyone has any objections, please let us know.

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

From: Jerome Glisse <jglisse@xxxxxxxxxx>

commit 6bba2e116808ca12e30c8d88dfedabf8b8d67390 upstream.

Check if there is a big enough dp clock & enough dp lane to
drive the video mode provided.

Signed-off-by: Jerome Glisse <jglisse@xxxxxxxxxx>
Reviewed-By: Alex Deucher <alexdeucher@xxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/gpu/drm/radeon/atombios_dp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -187,9 +187,9 @@ static int dp_link_clock_for_mode_clock(
 int dp_mode_valid(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
 {
 	int lanes = dp_lanes_for_mode_clock(dpcd, mode_clock);
-	int bw = dp_lanes_for_mode_clock(dpcd, mode_clock);
+	int dp_clock = dp_link_clock_for_mode_clock(dpcd, mode_clock);
 
-	if ((lanes == 0) || (bw == 0))
+	if ((lanes == 0) || (dp_clock == 0))
 		return MODE_CLOCK_HIGH;
 
 	return MODE_OK;


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