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ALSA: snd-aoa: add of_node_put() in error path 

[ Upstream commit 222bce5eb8 ]

 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 f3d9478b2c ("[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>
pull/10/head
Nicholas Mc Guire 2018-06-29 19:07:42 +02:00 committed by Greg Kroah-Hartman
parent 3e3f075f72
commit 85d3dbd8e7
1 changed files with 3 additions and 1 deletions
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4
sound/aoa/core/gpio-feature.c
View File

@ -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;