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drm/amdgpu: fix kgd_hqd_load failing to update shadow_wptr

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The return value from copy_form_user is 0 for the success case.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andres Rodriguez 2017-04-13 13:55:41 -04:00 committed by Alex Deucher
parent 97bf47b21d
commit 8ae0d2b8a0
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
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@ -252,7 +252,7 @@ static int kgd_hqd_load(struct kgd_dev *kgd, void *mqd, uint32_t pipe_id,
m = get_mqd(mqd);
valid_wptr = copy_from_user(&shadow_wptr, wptr, sizeof(shadow_wptr));
if (valid_wptr > 0)
if (valid_wptr == 0)
m->cp_hqd_pq_wptr = shadow_wptr;
acquire_queue(kgd, pipe_id, queue_id);