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| author | Richard Purdie <rpurdie@rpsys.net> | 2007-11-10 13:29:04 +0000 |
|---|---|---|
| committer | Richard Purdie <rpurdie@rpsys.net> | 2007-12-07 09:06:53 +0000 |
| commit | dc47206e552c0850ad11f7e9a1fca0a3c92f5d65 (patch) | |
| tree | 01188f5ca89d295009a618e1be6c5cea2926a522 /include/linux/leds.h | |
| parent | f194d132e4971111f85c18c96067acffb13cee6d (diff) | |
| download | lwn-dc47206e552c0850ad11f7e9a1fca0a3c92f5d65.tar.gz lwn-dc47206e552c0850ad11f7e9a1fca0a3c92f5d65.zip | |
leds: Fix led trigger locking bugs
Convert part of the led trigger core from rw spinlocks to rw
semaphores. We're calling functions which can sleep from invalid
contexts otherwise. Fixes bug #9264.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'include/linux/leds.h')
| -rw-r--r-- | include/linux/leds.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/leds.h b/include/linux/leds.h index dc1178f6184b..b4130ff58d0c 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -14,6 +14,7 @@ #include <linux/list.h> #include <linux/spinlock.h> +#include <linux/rwsem.h> struct device; /* @@ -43,7 +44,7 @@ struct led_classdev { #ifdef CONFIG_LEDS_TRIGGERS /* Protects the trigger data below */ - rwlock_t trigger_lock; + struct rw_semaphore trigger_lock; struct led_trigger *trigger; struct list_head trig_list; |