4.18-stable review patch. If anyone has any objections, please let me know.
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From: Nicholas Mc Guire hofrat@osadl.org
[ Upstream commit 222bce5eb88d1af656419db04bcd84b2419fb900 ]
Both calls to of_find_node_by_name() and of_get_next_child() return a node pointer with refcount incremented thus it must be explicidly decremented here after the last usage. As we are assured to have a refcounted np either from the initial of_find_node_by_name(NULL, name); or from the of_get_next_child(gpio, np) in the while loop if we reached the error code path below, an x of_node_put(np) is needed.
Signed-off-by: Nicholas Mc Guire hofrat@osadl.org Fixes: commit f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa") Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/aoa/core/gpio-feature.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/sound/aoa/core/gpio-feature.c +++ b/sound/aoa/core/gpio-feature.c @@ -88,8 +88,10 @@ static struct device_node *get_gpio(char }
reg = of_get_property(np, "reg", NULL); - if (!reg) + if (!reg) { + of_node_put(np); return NULL; + }
*gpioptr = *reg;