Subject: fix missing unlock in spufs_signal1_release
From: Christoph Hellwig <hch@lst.de>

Add a missing spin_unlock in spufs_signal1_release.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

Index: linux-2.6/arch/powerpc/platforms/cell/spufs/file.c
===================================================================
--- linux-2.6.orig/arch/powerpc/platforms/cell/spufs/file.c
+++ linux-2.6/arch/powerpc/platforms/cell/spufs/file.c
@@ -780,6 +780,7 @@ spufs_signal1_release(struct inode *inod
 	spin_lock(&ctx->mapping_lock);
 	if (!--i->i_openers)
 		ctx->signal1 = NULL;
+	spin_unlock(&ctx->mapping_lock);
 	smp_wmb();
 	return 0;
 }