Re: [PATCH] drm/msm: remove unneeded variable ret

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On 07/04/2021 16:06, Bernard Zhao wrote:
This patch fix coccicheck warning:
drivers/gpu/drm/msm/dp/dp_link.c:848:5-8: Unneeded variable: "ret". Return "0" on line 880
Also remove unneeded function return value check.

Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>


---
  drivers/gpu/drm/msm/dp/dp_link.c | 15 +++------------
  1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c
index be986da78c4a..3395b08155a6 100644
--- a/drivers/gpu/drm/msm/dp/dp_link.c
+++ b/drivers/gpu/drm/msm/dp/dp_link.c
@@ -843,10 +843,8 @@ bool dp_link_send_edid_checksum(struct dp_link *dp_link, u8 checksum)
  	return ret == 1;
  }
-static int dp_link_parse_vx_px(struct dp_link_private *link)
+static void dp_link_parse_vx_px(struct dp_link_private *link)
  {
-	int ret = 0;
-
  	DRM_DEBUG_DP("vx: 0=%d, 1=%d, 2=%d, 3=%d\n",
  		drm_dp_get_adjust_request_voltage(link->link_status, 0),
  		drm_dp_get_adjust_request_voltage(link->link_status, 1),
@@ -876,8 +874,6 @@ static int dp_link_parse_vx_px(struct dp_link_private *link)
  	DRM_DEBUG_DP("Requested: v_level = 0x%x, p_level = 0x%x\n",
  			link->dp_link.phy_params.v_level,
  			link->dp_link.phy_params.p_level);
-
-	return ret;
  }
/**
@@ -891,8 +887,6 @@ static int dp_link_parse_vx_px(struct dp_link_private *link)
  static int dp_link_process_phy_test_pattern_request(
  		struct dp_link_private *link)
  {
-	int ret = 0;
-
  	if (!(link->request.test_requested & DP_TEST_LINK_PHY_TEST_PATTERN)) {
  		DRM_DEBUG_DP("no phy test\n");
  		return -EINVAL;
@@ -918,12 +912,9 @@ static int dp_link_process_phy_test_pattern_request(
  	link->dp_link.link_params.rate =
  		drm_dp_bw_code_to_link_rate(link->request.test_link_rate);
- ret = dp_link_parse_vx_px(link);
-
-	if (ret)
-		DRM_ERROR("parse_vx_px failed. ret=%d\n", ret);
+	dp_link_parse_vx_px(link);
- return ret;
+	return 0;
  }
static u8 get_link_status(const u8 link_status[DP_LINK_STATUS_SIZE], int r)



--
With best wishes
Dmitry



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