| Message ID | 1530292062-31567-1-git-send-email-hofrat@osadl.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | ALSA: snd-aoa: add of_node_put() in error path | expand |
diff --git a/sound/aoa/core/gpio-feature.c b/sound/aoa/core/gpio-feature.c index 7196008..6555742 100644 --- 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 *name, } reg = of_get_property(np, "reg", NULL); - if (!reg) + if (!reg) { + of_node_put(np); return NULL; + } *gpioptr = *reg;
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") --- Problem located by an experimental coccinelle script Patch was compiletested with: ppc64_defconfig (implies CONFIG_SND_AOA=m) Patch is against 4.18-rc2 (localversion-next is next-20180629) sound/aoa/core/gpio-feature.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)