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| author | Wen Yang <wen.yang99@zte.com.cn> | 2019-04-08 10:58:32 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-01 11:11:53 +0200 |
| commit | 2105d207a7266aaf2ccef8e99255b30918bb19f6 (patch) | |
| tree | ccd551467d0f72a33100b60257d09dcb3d664756 /drivers/video/fbdev/omap2/dss/omapdss-boot-init.c | |
| parent | 67f39614c81df35c16bac816881fbe7badb11dbb (diff) | |
drm/omap: fix possible object reference leak
[ Upstream commit 47340e46f34a3b1d80e40b43ae3d7a8da34a3541 ]
The call to of_find_matching_node returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
Detected by coccinelle with the following warnings:
drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c:212:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 209, but without a corresponding object release within this function.
drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c:237:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 209, but without a corresponding object release within this function.
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: Markus Elfring <Markus.Elfring@web.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1554692313-28882-2-git-send-email-wen.yang99@zte.com.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/video/fbdev/omap2/dss/omapdss-boot-init.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/dss/omapdss-boot-init.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c index 8b6f6d5fdd68..43186fa8a13c 100644 --- a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c +++ b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c @@ -194,7 +194,7 @@ static int __init omapdss_boot_init(void) dss = of_find_matching_node(NULL, omapdss_of_match); if (dss == NULL || !of_device_is_available(dss)) - return 0; + goto put_node; omapdss_walk_device(dss, true); @@ -221,6 +221,8 @@ static int __init omapdss_boot_init(void) kfree(n); } +put_node: + of_node_put(dss); return 0; } |