Patch "drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()" has been added to the 4.9-stable tree

Patch "drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vce_ring_parse_cs.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 40a9960b046290939b56ce8e51f365258f27f264 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 30 Sep 2017 11:13:28 +0300
Subject: drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 40a9960b046290939b56ce8e51f365258f27f264 upstream.

We shifted some code around in commit 9cca0b8e5df0 ("drm/amdgpu: move
amdgpu_cs_sysvm_access_required into find_mapping") and now my static
checker complains that "r" might not be initialized at the end of the
function.  I've reviewed the code, and that seems possible, but it's
also possible I may have missed something.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c
@@ -648,7 +648,7 @@ int amdgpu_vce_ring_parse_cs(struct amdg
 	uint32_t allocated = 0;
 	uint32_t tmp, handle = 0;
 	uint32_t *size = &tmp;
-	int i, r, idx = 0;
+	int i, r = 0, idx = 0;
 
 	r = amdgpu_cs_sysvm_access_required(p);
 	if (r)


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.9/drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vce_ring_parse_cs.patch
queue-4.9/drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vm_update_directories.patch