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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	dri-devel@lists.freedesktop.org,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: [PATCH v3] drm/bridge_connector: Handle drm_connector_init_with_ddc() failures
Date: Mon, 17 Jul 2023 15:15:44 +0200	[thread overview]
Message-ID: <3a7e9540d8dc94298d021aa2fb046ae8616ca4dd.1689599701.git.geert+renesas@glider.be> (raw)

drm_connector_init_with_ddc() can fail, but the call in
drm_bridge_connector_init() does not check that.  Fix this by adding
the missing error handling.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
---
v3:
  - Add Reviewed-by,

v2:
  - Move declaration of ret to its own line,
  - Add Reviewed-by.
---
 drivers/gpu/drm/drm_bridge_connector.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index fc6f16e14f367dad..1da93d5a1f614732 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -318,6 +318,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 	struct i2c_adapter *ddc = NULL;
 	struct drm_bridge *bridge, *panel_bridge = NULL;
 	int connector_type;
+	int ret;
 
 	bridge_connector = kzalloc(sizeof(*bridge_connector), GFP_KERNEL);
 	if (!bridge_connector)
@@ -368,8 +369,14 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 		return ERR_PTR(-EINVAL);
 	}
 
-	drm_connector_init_with_ddc(drm, connector, &drm_bridge_connector_funcs,
-				    connector_type, ddc);
+	ret = drm_connector_init_with_ddc(drm, connector,
+					  &drm_bridge_connector_funcs,
+					  connector_type, ddc);
+	if (ret) {
+		kfree(bridge_connector);
+		return ERR_PTR(ret);
+	}
+
 	drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs);
 
 	if (bridge_connector->bridge_hpd)
-- 
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org,
	linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: [PATCH v3] drm/bridge_connector: Handle drm_connector_init_with_ddc() failures
Date: Mon, 17 Jul 2023 15:15:44 +0200	[thread overview]
Message-ID: <3a7e9540d8dc94298d021aa2fb046ae8616ca4dd.1689599701.git.geert+renesas@glider.be> (raw)

drm_connector_init_with_ddc() can fail, but the call in
drm_bridge_connector_init() does not check that.  Fix this by adding
the missing error handling.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
---
v3:
  - Add Reviewed-by,

v2:
  - Move declaration of ret to its own line,
  - Add Reviewed-by.
---
 drivers/gpu/drm/drm_bridge_connector.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index fc6f16e14f367dad..1da93d5a1f614732 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -318,6 +318,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 	struct i2c_adapter *ddc = NULL;
 	struct drm_bridge *bridge, *panel_bridge = NULL;
 	int connector_type;
+	int ret;
 
 	bridge_connector = kzalloc(sizeof(*bridge_connector), GFP_KERNEL);
 	if (!bridge_connector)
@@ -368,8 +369,14 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
 		return ERR_PTR(-EINVAL);
 	}
 
-	drm_connector_init_with_ddc(drm, connector, &drm_bridge_connector_funcs,
-				    connector_type, ddc);
+	ret = drm_connector_init_with_ddc(drm, connector,
+					  &drm_bridge_connector_funcs,
+					  connector_type, ddc);
+	if (ret) {
+		kfree(bridge_connector);
+		return ERR_PTR(ret);
+	}
+
 	drm_connector_helper_add(connector, &drm_bridge_connector_helper_funcs);
 
 	if (bridge_connector->bridge_hpd)
-- 
2.34.1


             reply	other threads:[~2023-07-17 13:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-17 13:15 Geert Uytterhoeven [this message]
2023-07-17 13:15 ` [PATCH v3] drm/bridge_connector: Handle drm_connector_init_with_ddc() failures Geert Uytterhoeven
2023-07-29 18:59 ` Javier Martinez Canillas
2023-07-29 18:59   ` Javier Martinez Canillas

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