[POWERPC] spufs: Fix state_mutex leaks
Fix various state_mutex leaks. The worst one was introduced by the
interrutible state_mutex conversion but there've been a few before
too. Notably spufs_wait now returns without the state_mutex held
when returning an error, which actually cleans up some code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index b4814c7..e9c61a1 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -354,8 +354,15 @@
do {
ret = spufs_wait(ctx->stop_wq, spu_stopped(ctx, &status));
- if (unlikely(ret))
+ if (unlikely(ret)) {
+ /*
+ * This is nasty: we need the state_mutex for all the
+ * bookkeeping even if the syscall was interrupted by
+ * a signal. ewww.
+ */
+ mutex_lock(&ctx->state_mutex);
break;
+ }
spu = ctx->spu;
if (unlikely(test_and_clear_bit(SPU_SCHED_NOTIFY_ACTIVE,
&ctx->sched_flags))) {