drm/radeon: make dpcd parameters const

[ Upstream commit 0c3a88407ef2be8bb7c302c298d6ff58ebde4a43 ]

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 447dbfa..9cd49c5 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -254,7 +254,7 @@ void radeon_dp_aux_init(struct radeon_connector *radeon_connector)
 #define DP_VOLTAGE_MAX         DP_TRAIN_VOLTAGE_SWING_LEVEL_3
 #define DP_PRE_EMPHASIS_MAX    DP_TRAIN_PRE_EMPH_LEVEL_3
 
-static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
+static void dp_get_adjust_train(const u8 link_status[DP_LINK_STATUS_SIZE],
                                int lane_count,
                                u8 train_set[4])
 {
@@ -312,7 +312,7 @@ static int dp_get_max_dp_pix_clock(int link_rate,
 /***** radeon specific DP functions *****/
 
 int radeon_dp_get_max_link_rate(struct drm_connector *connector,
-                               u8 dpcd[DP_DPCD_SIZE])
+                               const u8 dpcd[DP_DPCD_SIZE])
 {
        int max_link_rate;
 
@@ -329,7 +329,7 @@ int radeon_dp_get_max_link_rate(struct drm_connector *connector,
  * if the max lane# < low rate lane# then use max lane# instead.
  */
 static int radeon_dp_get_dp_lane_number(struct drm_connector *connector,
-                                       u8 dpcd[DP_DPCD_SIZE],
+                                       const u8 dpcd[DP_DPCD_SIZE],
                                        int pix_clock)
 {
        int bpp = convert_bpc_to_bpp(radeon_get_monitor_bpc(connector));
@@ -348,7 +348,7 @@ static int radeon_dp_get_dp_lane_number(struct drm_connector *connector,
 }
 
 static int radeon_dp_get_dp_link_clock(struct drm_connector *connector,
-                                      u8 dpcd[DP_DPCD_SIZE],
+                                      const u8 dpcd[DP_DPCD_SIZE],
                                       int pix_clock)
 {
        int bpp = convert_bpc_to_bpp(radeon_get_monitor_bpc(connector));

diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 9af2d83..aecc3e3 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -753,7 +753,7 @@ extern bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector);
 extern int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
                                    struct drm_connector *connector);
 int radeon_dp_get_max_link_rate(struct drm_connector *connector,
-                               u8 *dpcd);
+                               const u8 *dpcd);
 extern void radeon_dp_set_rx_power_state(struct drm_connector *connector,
                                         u8 power_state);
 extern void radeon_dp_aux_init(struct radeon_connector *radeon_connector);