Re: [PATCH] drm/msm/dsi: Remove use of device_node in dsi_host_parse_dt()

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On 8/29/2022 9:54 AM, Nathan Chancellor wrote:
Clang warns:

   drivers/gpu/drm/msm/dsi/dsi_host.c:1903:14: error: variable 'device_node' is uninitialized when used here [-Werror,-Wuninitialized]
           of_node_put(device_node);
                       ^~~~~~~~~~~
   drivers/gpu/drm/msm/dsi/dsi_host.c:1870:44: note: initialize the variable 'device_node' to silence this warning
           struct device_node *endpoint, *device_node;
                                                     ^
                                                     = NULL
   1 error generated.

device_node's assignment was removed but not all of its uses. Remove the
call to of_node_put() and the variable declaration to clean up the
warning.

Fixes: 5f8cdece42ff ("drm/msm/dsi: switch to DRM_PANEL_BRIDGE")
Link: https://github.com/ClangBuiltLinux/linux/issues/1700
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/dsi/dsi_host.c | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 57a4c0fa614b..7fbf391c024f 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1867,7 +1867,7 @@ static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
  {
  	struct device *dev = &msm_host->pdev->dev;
  	struct device_node *np = dev->of_node;
-	struct device_node *endpoint, *device_node;
+	struct device_node *endpoint;
  	int ret = 0;
/*
@@ -1900,8 +1900,6 @@ static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
  		}
  	}
- of_node_put(device_node);
-
  err:
  	of_node_put(endpoint);
base-commit: 5f8cdece42ff0c615e213b6619d29487f9f409d7



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