[PATCH 09/16] drm/amd/display: Remove useless assignments and variables

[Tom Chung]

From: Alex Hung <alex.hung at amd.com>

[WHAT & HOW]
misc0, temp and split_pipe are assigned but immediately re-assigned
to other values. The early assignments are useless and are removed.
Unused variables are removed as well.

This fixes 5 UNUSED_VALUE issues reported by Coverity.

Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira at amd.com>
Signed-off-by: Alex Hung <alex.hung at amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c                    | 1 -
 drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c         | 2 --
 drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c      | 2 --
 drivers/gpu/drm/amd/display/dc/dio/dcn10/dcn10_stream_encoder.c | 2 --
 .../drm/amd/display/dc/dio/dcn401/dcn401_dio_stream_encoder.c   | 2 --
 5 files changed, 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index f0417ee6fcf8..f90fc154549a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -1013,7 +1013,6 @@ static bool dc_can_pipe_disable_cursor(struct pipe_ctx *pipe_ctx)
 		r2 = test_pipe->plane_res.scl_data.recout;
 		r2_r = r2.x + r2.width;
 		r2_b = r2.y + r2.height;
-		split_pipe = test_pipe;
 
 		/**
 		 * There is another half plane on same layer because of
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 5c2825bc9a87..d199e4ed2e59 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -277,7 +277,6 @@ static void dce110_stream_encoder_dp_set_stream_attribute(
 	uint32_t misc1 = 0;
 	uint32_t h_blank;
 	uint32_t h_back_porch;
-	uint8_t synchronous_clock = 0; /* asynchronous mode */
 	uint8_t colorimetry_bpc;
 	uint8_t dynamic_range_rgb = 0; /*full range*/
 	uint8_t dynamic_range_ycbcr = 1; /*bt709*/
@@ -380,7 +379,6 @@ static void dce110_stream_encoder_dp_set_stream_attribute(
 		break;
 	}
 
-	misc0 = misc0 | synchronous_clock;
 	misc0 = colorimetry_bpc << 5;
 
 	if (REG(DP_MSA_TIMING_PARAM1)) {
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
index db7557a1c613..8a3fbf95c48f 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input_v.c
@@ -76,7 +76,6 @@ UNP_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_C__GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_C_MAS
 		mmUNP_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_C,
 		value);
 
-	temp = 0;
 	value = 0;
 	temp = address.low_part >>
 	UNP_GRPH_PRIMARY_SURFACE_ADDRESS_C__GRPH_PRIMARY_SURFACE_ADDRESS_C__SHIFT;
@@ -112,7 +111,6 @@ UNP_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_L__GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_L_MAS
 		mmUNP_GRPH_PRIMARY_SURFACE_ADDRESS_HIGH_L,
 		value);
 
-	temp = 0;
 	value = 0;
 	temp = address.low_part >>
 	UNP_GRPH_PRIMARY_SURFACE_ADDRESS_L__GRPH_PRIMARY_SURFACE_ADDRESS_L__SHIFT;
diff --git a/drivers/gpu/drm/amd/display/dc/dio/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dio/dcn10/dcn10_stream_encoder.c
index f496e952ceec..d01a8b8f9595 100644
--- a/drivers/gpu/drm/amd/display/dc/dio/dcn10/dcn10_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dio/dcn10/dcn10_stream_encoder.c
@@ -255,7 +255,6 @@ void enc1_stream_encoder_dp_set_stream_attribute(
 	uint32_t misc1 = 0;
 	uint32_t h_blank;
 	uint32_t h_back_porch;
-	uint8_t synchronous_clock = 0; /* asynchronous mode */
 	uint8_t colorimetry_bpc;
 	uint8_t dp_pixel_encoding = 0;
 	uint8_t dp_component_depth = 0;
@@ -362,7 +361,6 @@ void enc1_stream_encoder_dp_set_stream_attribute(
 		break;
 	}
 
-	misc0 = misc0 | synchronous_clock;
 	misc0 = colorimetry_bpc << 5;
 
 	switch (output_color_space) {
diff --git a/drivers/gpu/drm/amd/display/dc/dio/dcn401/dcn401_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dio/dcn401/dcn401_dio_stream_encoder.c
index 0a27e0942a12..098c2a01a850 100644
--- a/drivers/gpu/drm/amd/display/dc/dio/dcn401/dcn401_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dio/dcn401/dcn401_dio_stream_encoder.c
@@ -447,7 +447,6 @@ void enc401_stream_encoder_dp_set_stream_attribute(
 	uint32_t misc1 = 0;
 	uint32_t h_blank;
 	uint32_t h_back_porch;
-	uint8_t synchronous_clock = 0; /* asynchronous mode */
 	uint8_t colorimetry_bpc;
 	uint8_t dp_pixel_encoding = 0;
 	uint8_t dp_component_depth = 0;
@@ -603,7 +602,6 @@ void enc401_stream_encoder_dp_set_stream_attribute(
 		break;
 	}
 
-	misc0 = misc0 | synchronous_clock;
 	misc0 = colorimetry_bpc << 5;
 
 	switch (output_color_space) {
-- 
2.34.1