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authorJohannes Berg <johannes@sipsolutions.net>2006-07-25 16:12:51 +0200
committerJaroslav Kysela <perex@suse.cz>2006-08-03 15:21:20 +0200
commit2566d36ab4f0b90141bb59a5f7342255751fbf45 (patch)
tree086251f284de9f559235164e3ab0594e6456b2ec /sound/aoa/core
parent59feddb25f9d925e86ee22596802405788bc050f (diff)
downloadlinux-2566d36ab4f0b90141bb59a5f7342255751fbf45.tar.gz
[ALSA] aoa: feature gpio layer: fix IRQ access
The IRQ rework caused some hiccups here, in some cases we call get_irq without a device node. This patch makes it catch that case and return NO_IRQ when it happens, along with changing the place where the irq is checked to check for NO_IRQ instead of -1. Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/aoa/core')
-rw-r--r--sound/aoa/core/snd-aoa-gpio-feature.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/sound/aoa/core/snd-aoa-gpio-feature.c b/sound/aoa/core/snd-aoa-gpio-feature.c
index 7ae0c0bdfad..f69d33357a2 100644
--- a/sound/aoa/core/snd-aoa-gpio-feature.c
+++ b/sound/aoa/core/snd-aoa-gpio-feature.c
@@ -112,7 +112,10 @@ static struct device_node *get_gpio(char *name,
static void get_irq(struct device_node * np, int *irqptr)
{
- *irqptr = irq_of_parse_and_map(np, 0);
+ if (np)
+ *irqptr = irq_of_parse_and_map(np, 0);
+ else
+ *irqptr = NO_IRQ;
}
/* 0x4 is outenable, 0x1 is out, thus 4 or 5 */
@@ -322,7 +325,7 @@ static int ftr_set_notify(struct gpio_runtime *rt,
return -EINVAL;
}
- if (irq == -1)
+ if (irq == NO_IRQ)
return -ENODEV;
mutex_lock(&notif->mutex);