Reviewed-by: Alexey Skidanov alexey.skidanov@amd.com
-----Original Message----- From: dri-devel [mailto:dri-devel-bounces@lists.freedesktop.org] On Behalf Of Gabbay, Oded Sent: Thursday, December 04, 2014 2:27 PM To: dri-devel@lists.freedesktop.org Cc: dan.carpenter@oracle.com Subject: [PATCH] amdkfd: Set *buffer_ptr to NULL in case of error
In function acquire_packet_buffer() we may return -ENOMEM. In that case, we should set the *buffer_ptr to NULL, so that calling functions which check the *buffer_ptr value as a criteria for success, will know that acquire_packet_buffer() failed.
Signed-off-by: Oded Gabbay oded.gabbay@amd.com --- drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c index 9abac48..9350714 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c @@ -221,8 +221,14 @@ static int acquire_packet_buffer(struct kernel_queue *kq, queue_size_dwords;
if (packet_size_in_dwords >= queue_size_dwords || - packet_size_in_dwords >= available_size) + packet_size_in_dwords >= available_size) { + /* + * make sure calling functions know + * acquire_packet_buffer() failed + */ + *buffer_ptr = NULL; return -ENOMEM; + }
if (wptr + packet_size_in_dwords >= queue_size_dwords) { while (wptr > 0) { -- 1.9.1
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