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 max link rate in a unsigned int
instead.
Signed-off-by: Tobias Schramm <t.schramm@xxxxxxxxxxx>
---
drivers/gpu/drm/bridge/analogix-anx78xx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c
index 274989f96a91..0f38b8c40dff 100644
--- a/drivers/gpu/drm/bridge/analogix-anx78xx.c
+++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c
@@ -748,6 +748,7 @@ static int anx78xx_init_pdata(struct anx78xx *anx78xx)
static int anx78xx_dp_link_training(struct anx78xx *anx78xx)
{
u8 dp_bw, dpcd[2];
+ unsigned int max_link_rate;
int err;
err = regmap_write(anx78xx->map[I2C_IDX_RX_P0], SP_HDMI_MUTE_CTRL_REG,
@@ -866,8 +867,8 @@ 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]);
+ max_link_rate = drm_dp_max_link_rate(anx78xx->dpcd);
+ dpcd[0] = drm_dp_link_rate_to_bw_code(max_link_rate);
err = regmap_write(anx78xx->map[I2C_IDX_TX_P0],
SP_DP_MAIN_LINK_BW_SET_REG, dpcd[0]);
if (err)
--
2.24.1
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