summaryrefslogtreecommitdiff
path: root/arch/arc/include/asm/spinlock.h
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2013-10-25 11:43:47 +0200
committerTakashi Iwai <tiwai@suse.de>2013-10-25 11:43:47 +0200
commit6913a9dbf18f08e3577695032da15812bda92b66 (patch)
tree05ca8620b11f2898022a7fd8a00f1f8566161428 /arch/arc/include/asm/spinlock.h
parent7342017f4a0f129d277f78b8761f2732661ba30a (diff)
parent9645083ca5ef365b7b750cf219bb20b61bb925f8 (diff)
Merge tag 'asoc-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v3.13 - Further work on the dmaengine helpers, including support for configuring the parameters for DMA by reading the capabilities of the DMA controller which removes some guesswork and magic numbers fromm drivers. - A refresh of the documentation. - Conversions of many drivers to direct regmap API usage in order to allow the ASoC level register I/O code to be removed, this will hopefully be completed by v3.14. - Support for using async register I/O in DAPM, reducing the time taken to implement power transitions on systems that support it.
Diffstat (limited to 'arch/arc/include/asm/spinlock.h')
-rw-r--r--arch/arc/include/asm/spinlock.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arc/include/asm/spinlock.h b/arch/arc/include/asm/spinlock.h
index f158197ac5b0..b6a8c2dfbe6e 100644
--- a/arch/arc/include/asm/spinlock.h
+++ b/arch/arc/include/asm/spinlock.h
@@ -45,7 +45,14 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
- lock->slock = __ARCH_SPIN_LOCK_UNLOCKED__;
+ unsigned int tmp = __ARCH_SPIN_LOCK_UNLOCKED__;
+
+ __asm__ __volatile__(
+ " ex %0, [%1] \n"
+ : "+r" (tmp)
+ : "r"(&(lock->slock))
+ : "memory");
+
smp_mb();
}