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From: Miaoqian Lin <linmq006@gmail.com>
To: Neil Armstrong <narmstrong@baylibre.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	dri-devel@lists.freedesktop.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init
Date: Thu, 12 May 2022 13:21:13 +0400	[thread overview]
Message-ID: <20220512092114.38426-1-linmq006@gmail.com> (raw)

of_find_device_by_node() takes a reference to the embedded struct device,
we should use put_device() to release it when not need anymore.
Add missing put_device() in error path to avoid refcount leak.

Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index 5e306de6f485..de87f02cd388 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -435,8 +435,10 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
 		cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector);
 
 		notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info);
-		if (!notifier)
+		if (!notifier) {
+			put_device(&pdev->dev);
 			return -ENOMEM;
+		}
 
 		meson_encoder_hdmi->cec_notifier = notifier;
 	}
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Neil Armstrong <narmstrong@baylibre.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	dri-devel@lists.freedesktop.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init
Date: Thu, 12 May 2022 13:21:13 +0400	[thread overview]
Message-ID: <20220512092114.38426-1-linmq006@gmail.com> (raw)

of_find_device_by_node() takes a reference to the embedded struct device,
we should use put_device() to release it when not need anymore.
Add missing put_device() in error path to avoid refcount leak.

Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index 5e306de6f485..de87f02cd388 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -435,8 +435,10 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
 		cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector);
 
 		notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info);
-		if (!notifier)
+		if (!notifier) {
+			put_device(&pdev->dev);
 			return -ENOMEM;
+		}
 
 		meson_encoder_hdmi->cec_notifier = notifier;
 	}
-- 
2.25.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

WARNING: multiple messages have this Message-ID (diff)
From: Miaoqian Lin <linmq006@gmail.com>
To: Neil Armstrong <narmstrong@baylibre.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	dri-devel@lists.freedesktop.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init
Date: Thu, 12 May 2022 13:21:13 +0400	[thread overview]
Message-ID: <20220512092114.38426-1-linmq006@gmail.com> (raw)

of_find_device_by_node() takes a reference to the embedded struct device,
we should use put_device() to release it when not need anymore.
Add missing put_device() in error path to avoid refcount leak.

Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
 drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index 5e306de6f485..de87f02cd388 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -435,8 +435,10 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
 		cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector);
 
 		notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info);
-		if (!notifier)
+		if (!notifier) {
+			put_device(&pdev->dev);
 			return -ENOMEM;
+		}
 
 		meson_encoder_hdmi->cec_notifier = notifier;
 	}
-- 
2.25.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

             reply	other threads:[~2022-05-12  9:21 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-12  9:21 Miaoqian Lin [this message]
2022-05-12  9:21 ` [PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init Miaoqian Lin
2022-05-12  9:21 ` Miaoqian Lin
2022-05-12  9:32 ` Neil Armstrong
2022-05-12  9:32   ` Neil Armstrong
2022-05-12  9:32   ` Neil Armstrong
2022-05-12 11:17   ` Miaoqian Lin
2022-05-12 11:17     ` Miaoqian Lin
2022-05-12 11:17     ` Miaoqian Lin
  -- strict thread matches above, loose matches on Subject: below --
2022-05-11  5:40 Miaoqian Lin
2022-05-11  5:40 ` Miaoqian Lin
2022-05-11  5:40 ` Miaoqian Lin
2022-05-12 12:20 ` Neil Armstrong
2022-05-12 12:20   ` Neil Armstrong
2022-05-12 12:20   ` Neil Armstrong
2022-05-12 12:38 ` Martin Blumenstingl
2022-05-12 12:38   ` Martin Blumenstingl
2022-05-12 12:38   ` Martin Blumenstingl
2022-05-12 12:38   ` Martin Blumenstingl
2022-05-12 15:33   ` Neil Armstrong
2022-05-12 15:33     ` Neil Armstrong
2022-05-12 15:33     ` Neil Armstrong
2022-05-12 15:33     ` Neil Armstrong
2022-05-18  7:23 ` Neil Armstrong
2022-05-18  7:23   ` Neil Armstrong
2022-05-18  7:23   ` Neil Armstrong

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