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amdkfd: Set *buffer_ptr to NULL in case of error

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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.

Reviewed-by: Alexey Skidanov <alexey.skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
This commit is contained in:
Oded Gabbay 2014-12-04 14:09:02 +02:00
parent c448a142a7
commit a550bb3d53
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
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@ -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) {