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drm/radeon: check for allocation failure in radeon_ring_backup()

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Static checkers complain if this we don't check for allocation failure.
Also we can use the new kmalloc_array() function here as a cleanup.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dan Carpenter 2012-07-20 14:17:00 +03:00 committed by Dave Airlie
parent d1c7871ddb
commit 1e179d4e28
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/radeon/radeon_ring.c
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@ -594,7 +594,11 @@ unsigned radeon_ring_backup(struct radeon_device *rdev, struct radeon_ring *ring
}
/* and then save the content of the ring */
*data = kmalloc(size * 4, GFP_KERNEL);
*data = kmalloc_array(size, sizeof(uint32_t), GFP_KERNEL);
if (!*data) {
mutex_unlock(&rdev->ring_lock);
return 0;
}
for (i = 0; i < size; ++i) {
(*data)[i] = ring->ring[ptr++];
ptr &= ring->ptr_mask;