From: Wen Yang wen.yang99@zte.com.cn
[ 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-em... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c index 3bfb95d230e0..d8fb686c1fda 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c +++ b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c @@ -193,7 +193,7 @@ 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);
@@ -218,6 +218,8 @@ static int __init omapdss_boot_init(void) kfree(n); }
+put_node: + of_node_put(dss); return 0; }