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| author | David (Ming Qiang) Wu <David.Wu3@amd.com> | 2025-05-12 22:14:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 13:11:40 +0300 |
| commit | cef081c8231b52b4a652bbd022e03d80441118be (patch) | |
| tree | ad576b8ad3b88b445c2c76726b3ca87aae724d37 /scripts/generate_rust_analyzer.py | |
| parent | 9cf5b2a3b72c23fb7b84736d5d19ee6ea718762b (diff) | |
| download | linux-cef081c8231b52b4a652bbd022e03d80441118be.tar.xz | |
drm/amdgpu: read back register after written for VCN v4.0.5
commit ee7360fc27d6045510f8fe459b5649b2af27811a upstream.
On VCN v4.0.5 there is a race condition where the WPTR is not
updated after starting from idle when doorbell is used. Adding
register read-back after written at function end is to ensure
all register writes are done before they can be used.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12528
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 07c9db090b86e5211188e1b351303fbc673378cf)
Cc: stable@vger.kernel.org
(cherry picked from commit ee7360fc27d6045510f8fe459b5649b2af27811a)
Hand modified for contextual changes where there is a for loop
in 6.12 that was dropped later on.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions