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From: Nathan Chancellor <nathan@kernel.org>
To: Rob Clark <robdclark@gmail.com>,
	Abhinav Kumar <quic_abhinavk@quicinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Sean Paul <sean@poorly.run>,
	linux-arm-msm@vger.kernel.org, llvm@lists.linux.dev,
	Nick Desaulniers <ndesaulniers@google.com>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	patches@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>,
	Tom Rix <trix@redhat.com>,
	freedreno@lists.freedesktop.org
Subject: [PATCH] drm/msm/dsi: Remove use of device_node in dsi_host_parse_dt()
Date: Mon, 29 Aug 2022 09:54:50 -0700	[thread overview]
Message-ID: <20220829165450.217628-1-nathan@kernel.org> (raw)

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@kernel.org>
---
 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
-- 
2.37.2


WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org>
To: Rob Clark <robdclark@gmail.com>,
	Abhinav Kumar <quic_abhinavk@quicinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Sean Paul <sean@poorly.run>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Tom Rix <trix@redhat.com>,
	linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	llvm@lists.linux.dev, patches@lists.linux.dev,
	Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH] drm/msm/dsi: Remove use of device_node in dsi_host_parse_dt()
Date: Mon, 29 Aug 2022 09:54:50 -0700	[thread overview]
Message-ID: <20220829165450.217628-1-nathan@kernel.org> (raw)

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@kernel.org>
---
 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
-- 
2.37.2


             reply	other threads:[~2022-08-29 16:55 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-29 16:54 Nathan Chancellor [this message]
2022-08-29 16:54 ` [PATCH] drm/msm/dsi: Remove use of device_node in dsi_host_parse_dt() Nathan Chancellor
2022-08-30 16:58 ` Abhinav Kumar
2022-08-30 16:58   ` Abhinav Kumar
2022-08-30 20:42 ` Dmitry Baryshkov
2022-08-30 20:42   ` Dmitry Baryshkov

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