linux-kernel - [PATCH] drm/radeon: fix UVD suspend error

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Date:   Mon, 17 Jan 2022 15:47:31 +0800
From:   Qiang Ma <maqianga@...ontech.com>
To:     alexander.deucher@....com, christian.koenig@....com,
        Xinhui.Pan@....com, airlied@...ux.ie, daniel@...ll.ch
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Qiang Ma <maqianga@...ontech.com>
Subject: [PATCH] drm/radeon: fix UVD suspend error

I met a bug recently and the kernel log:

[  330.171875] radeon 0000:03:00.0: couldn't schedule ib
[  330.175781] [drm:radeon_uvd_suspend [radeon]] *ERROR* Error destroying UVD (-22)!

In radeon drivers, using UVD suspend is as follows:

if (rdev->has_uvd) {
        uvd_v1_0_fini(rdev);
        radeon_uvd_suspend(rdev);
}

In radeon_ib_schedule function, we check the 'ring->ready' state,
but in uvd_v1_0_fini funciton, we've cleared the ready state.
So, just modify the suspend code flow to fix error.

Signed-off-by: Qiang Ma <maqianga@...ontech.com>
---
 drivers/gpu/drm/radeon/cik.c       | 2 +-
 drivers/gpu/drm/radeon/evergreen.c | 2 +-
 drivers/gpu/drm/radeon/ni.c        | 2 +-
 drivers/gpu/drm/radeon/r600.c      | 2 +-
 drivers/gpu/drm/radeon/rv770.c     | 2 +-
 drivers/gpu/drm/radeon/si.c        | 2 +-
 6 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 81b4de7be9f2..5819737c21c6 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -8517,8 +8517,8 @@ int cik_suspend(struct radeon_device *rdev)
 	cik_cp_enable(rdev, false);
 	cik_sdma_enable(rdev, false);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	if (rdev->has_vce)
 		radeon_vce_suspend(rdev);
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index eeb590d2dec2..455f8036aa54 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -5156,8 +5156,8 @@ int evergreen_suspend(struct radeon_device *rdev)
 	radeon_pm_suspend(rdev);
 	radeon_audio_fini(rdev);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	r700_cp_stop(rdev);
 	r600_dma_stop(rdev);
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 4a364ca7a1be..927e5f42e97d 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -2323,8 +2323,8 @@ int cayman_suspend(struct radeon_device *rdev)
 	cayman_cp_enable(rdev, false);
 	cayman_dma_stop(rdev);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	evergreen_irq_suspend(rdev);
 	radeon_wb_disable(rdev);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index ca3fcae2adb5..dd78fc499402 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3232,8 +3232,8 @@ int r600_suspend(struct radeon_device *rdev)
 	radeon_audio_fini(rdev);
 	r600_cp_stop(rdev);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	r600_irq_suspend(rdev);
 	radeon_wb_disable(rdev);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index e592e57be1bb..38796af4fadd 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -1894,8 +1894,8 @@ int rv770_suspend(struct radeon_device *rdev)
 	radeon_pm_suspend(rdev);
 	radeon_audio_fini(rdev);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	r700_cp_stop(rdev);
 	r600_dma_stop(rdev);
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 013e44ed0f39..8d5e4b25609d 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -6800,8 +6800,8 @@ int si_suspend(struct radeon_device *rdev)
 	si_cp_enable(rdev, false);
 	cayman_dma_stop(rdev);
 	if (rdev->has_uvd) {
-		uvd_v1_0_fini(rdev);
 		radeon_uvd_suspend(rdev);
+		uvd_v1_0_fini(rdev);
 	}
 	if (rdev->has_vce)
 		radeon_vce_suspend(rdev);
-- 
2.20.1