diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2022-07-12 16:21:32 +0100 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2022-07-12 17:37:59 -0400 |
| commit | 336561a914fc0c6f1218228718f633b31b7af1c3 (patch) | |
| tree | d4127eb757cef80a8089635c3153870c958a932b /drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | |
| parent | b7580e669ca0d624b122455058aa6fe62c0fef44 (diff) | |
drm/i915/gt: Serialize GRDOM access between multiple engine resets
Don't allow two engines to be reset in parallel, as they would both
try to select a reset bit (and send requests to common registers)
and wait on that register, at the same time. Serialize control of
the reset requests/acks using the uncore->lock, which will also ensure
that no other GT state changes at the same time as the actual reset.
Cc: stable@vger.kernel.org # v4.4 and upper
Reported-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e0a2d894e77aed7c2e36b0d1abdc7dbac3011729.1657639152.git.mchehab@kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
0 files changed, 0 insertions, 0 deletions