From 4d62555f624582e60be416fbc4772cd3fcd12b1a Mon Sep 17 00:00:00 2001 From: Philip Yang Date: Fri, 12 Nov 2021 19:05:08 -0500 Subject: [PATCH] drm/amdgpu: IH process reset count when restart MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Otherwise when IH process restart, count is zero, the loop will not exit to wake_up_all after processing AMDGPU_IH_MAX_NUM_IVS interrupts. Cc: stable@vger.kernel.org Signed-off-by: Philip Yang Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c index f3d62e196901..0c7963dfacad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c @@ -223,7 +223,7 @@ int amdgpu_ih_wait_on_checkpoint_process(struct amdgpu_device *adev, */ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) { - unsigned int count = AMDGPU_IH_MAX_NUM_IVS; + unsigned int count; u32 wptr; if (!ih->enabled || adev->shutdown) @@ -232,6 +232,7 @@ int amdgpu_ih_process(struct amdgpu_device *adev, struct amdgpu_ih_ring *ih) wptr = amdgpu_ih_get_wptr(adev, ih); restart_ih: + count = AMDGPU_IH_MAX_NUM_IVS; DRM_DEBUG("%s: rptr %d, wptr %d\n", __func__, ih->rptr, wptr); /* Order reading of wptr vs. reading of IH ring data */