[PATCH 1/1] powerpc/iseries: Initialise on-stack completion

[Michael Ellerman]

get_viotape_info() declares a vio_waitevent on the stack, which
contains a completion, but never initialises the completion.

I have no idea how this ever worked, and on recent kernels it causes
an oops in handle_tape_event() when we access the non-initialised
completion.

Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
---
 arch/powerpc/platforms/iseries/vio.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
index 657b72f..2aa8b56 100644
--- a/arch/powerpc/platforms/iseries/vio.c
+++ b/arch/powerpc/platforms/iseries/vio.c
@@ -474,6 +474,8 @@ static void __init get_viotape_info(struct device_node *vio_root)
 	struct vio_waitevent we;
 	int ret;
 
+	init_completion(&we.com);
+
 	ret = viopath_open(viopath_hostLp, viomajorsubtype_tape, 2);
 	if (ret) {
 		printk(KERN_WARNING "get_viotape_info: "
-- 
1.6.3.3