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drm/amdkfd: Fix kernel queue rollback_packet 

kq->queue->properties.write_ptr is a GPU address which can'd be
derefenced in the kernel. Use kq->wptr_kernel instead, which is the
kernel CPU address of the same buffer.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling 2018-04-10 17:33:12 -04:00 committed by Oded Gabbay
parent 2a26fbfe80
commit bebfd2f412
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
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@ -279,7 +279,7 @@ static void submit_packet(struct kernel_queue *kq)
static void rollback_packet(struct kernel_queue *kq)
{
kq->pending_wptr = *kq->queue->properties.write_ptr;
kq->pending_wptr = *kq->wptr_kernel;
}
struct kernel_queue *kernel_queue_init(struct kfd_dev *dev,