| Message ID | 20200308152238.1294229-2-t.schramm@manjaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Regression in analogix_anx78xx | expand |
diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c index 41867be03751..0c6b049b5753 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c @@ -722,8 +722,7 @@ static int anx78xx_dp_link_training(struct anx78xx *anx78xx) if (err) return err; - dpcd[0] = drm_dp_max_link_rate(anx78xx->dpcd); - dpcd[0] = drm_dp_link_rate_to_bw_code(dpcd[0]); + dpcd[0] = anx78xx->dpcd[DP_MAX_LINK_RATE]; err = regmap_write(anx78xx->map[I2C_IDX_TX_P0], SP_DP_MAIN_LINK_BW_SET_REG, dpcd[0]); if (err)
commit ff1e8fb68ea0 ("drm/bridge: analogix-anx78xx: Avoid drm_dp_link helpers") changed the link training logic to remove use of drm_dp_link helpers. However the new logic stores the maximum link rate in a u8, overflowing it. This commit changes the logic to store the bw code directly, avoiding any overflows. Fixes: ff1e8fb68ea0 ("drm/bridge: analogix-anx78xx: Avoid drm_dp_link helpers") Signed-off-by: Tobias Schramm <t.schramm@manjaro.org> --- drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)