[patch 058/104] powerpc/spufs: add a missing mutex_unlock

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Kou Ishizaki <kou.ishizaki@xxxxxxxxxxxxx>

commit 6747c2ee8abf749e63fee8cd01a9ee293e6a4247 upstream.

A mutex_unlock(&gang->aff_mutex) in spufs_create_context() is missing
in case spufs_context_open() fails.  As a result, spu_create syscall
and spu_get_idle() may block.

This patch adds the mutex_unlock.

Signed-off-by: Kou Ishizaki <kou.ishizaki@xxxxxxxxxxxxx>
Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx>
Acked-by: Andre Detsch <adetsch@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/powerpc/platforms/cell/spufs/inode.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -496,6 +496,8 @@ spufs_create_context(struct inode *inode
 	ret = spufs_context_open(dget(dentry), mntget(mnt));
 	if (ret < 0) {
 		WARN_ON(spufs_rmdir(inode, dentry));
+		if (affinity)
+			mutex_unlock(&gang->aff_mutex);
 		mutex_unlock(&inode->i_mutex);
 		spu_forget(SPUFS_I(dentry->d_inode)->i_ctx);
 		goto out;

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