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authorJohannes Berg <johannes@sipsolutions.net>2006-07-25 10:12:51 -0400
committerJaroslav Kysela <perex@suse.cz>2006-08-03 09:21:20 -0400
commit2566d36ab4f0b90141bb59a5f7342255751fbf45 (patch)
tree086251f284de9f559235164e3ab0594e6456b2ec /sound/aoa
parent59feddb25f9d925e86ee22596802405788bc050f (diff)
[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')
-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 7ae0c0bdfad8..f69d33357a28 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,
112 112
113static void get_irq(struct device_node * np, int *irqptr) 113static void get_irq(struct device_node * np, int *irqptr)
114{ 114{
115 *irqptr = irq_of_parse_and_map(np, 0); 115 if (np)
116 *irqptr = irq_of_parse_and_map(np, 0);
117 else
118 *irqptr = NO_IRQ;
116} 119}
117 120
118/* 0x4 is outenable, 0x1 is out, thus 4 or 5 */ 121/* 0x4 is outenable, 0x1 is out, thus 4 or 5 */
@@ -322,7 +325,7 @@ static int ftr_set_notify(struct gpio_runtime *rt,
322 return -EINVAL; 325 return -EINVAL;
323 } 326 }
324 327
325 if (irq == -1) 328 if (irq == NO_IRQ)
326 return -ENODEV; 329 return -ENODEV;
327 330
328 mutex_lock(&notif->mutex); 331 mutex_lock(&notif->mutex);