@@ -661,8 +661,7 @@ static int tc_aux_link_setup(struct tc_data *tc)
static int tc_get_display_props(struct tc_data *tc)
{
int ret;
- /* temp buffer */
- u8 tmp[8];
+ u8 reg;
/* Read DP Rx Link Capability */
ret = drm_dp_link_probe(&tc->aux, &tc->link.base);
@@ -678,21 +677,21 @@ static int tc_get_display_props(struct tc_data *tc)
tc->link.base.num_lanes = 2;
}
- ret = drm_dp_dpcd_readb(&tc->aux, DP_MAX_DOWNSPREAD, tmp);
+ ret = drm_dp_dpcd_readb(&tc->aux, DP_MAX_DOWNSPREAD, ®);
if (ret < 0)
goto err_dpcd_read;
- tc->link.spread = tmp[0] & DP_MAX_DOWNSPREAD_0_5;
+ tc->link.spread = reg & DP_MAX_DOWNSPREAD_0_5;
- ret = drm_dp_dpcd_readb(&tc->aux, DP_MAIN_LINK_CHANNEL_CODING, tmp);
+ ret = drm_dp_dpcd_readb(&tc->aux, DP_MAIN_LINK_CHANNEL_CODING, ®);
if (ret < 0)
goto err_dpcd_read;
tc->link.scrambler_dis = false;
/* read assr */
- ret = drm_dp_dpcd_readb(&tc->aux, DP_EDP_CONFIGURATION_SET, tmp);
+ ret = drm_dp_dpcd_readb(&tc->aux, DP_EDP_CONFIGURATION_SET, ®);
if (ret < 0)
goto err_dpcd_read;
- tc->link.assr = tmp[0] & DP_ALTERNATE_SCRAMBLER_RESET_ENABLE;
+ tc->link.assr = reg & DP_ALTERNATE_SCRAMBLER_RESET_ENABLE;
dev_dbg(tc->dev, "DPCD rev: %d.%d, rate: %s, lanes: %d, framing: %s\n",
tc->link.base.revision >> 4, tc->link.base.revision & 0x0f,
tc_get_display_props() never reads more than a byte via AUX, so there's no need to reserve 8 for that purpose. No function change intended. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Andrey Gusakov <andrey.gusakov@cogentembedded.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Cory Tusar <cory.tusar@zii.aero> Cc: Chris Healy <cphealy@gmail.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org --- drivers/gpu/drm/bridge/tc358767.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-)