From: Wen Yang wen.yang99@zte.com.cn
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 Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Reviewed-by: Tomi Valkeinen tomi.valkeinen@ti.com Acked-by: Sam Ravnborg sam@ravnborg.org --- 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 31502857f013..ce67891eedd4 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c +++ b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c @@ -192,7 +192,7 @@ 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);
@@ -217,6 +217,8 @@ static int __init omapdss_boot_init(void) kfree(n); }
+put_node: + of_node_put(dss); return 0; }