From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 14 May 2015 16:47:45 +0000 (-0400)
Subject: drm/radeon: make dpcd parameters const
X-Git-Tag: v5.15~15474^2~48^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0c3a88407ef2be8bb7c302c298d6ff58ebde4a43;p=platform%2Fkernel%2Flinux-starfive.git

drm/radeon: make dpcd parameters const

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 3e3290c..ed173d3 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -253,7 +253,7 @@ 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])
 {
@@ -311,7 +311,7 @@ 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;
 
@@ -328,7 +328,7 @@ 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));
@@ -347,7 +347,7 @@ 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 fa91a17..6de5459 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -754,7 +754,7 @@ 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);