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drm/radeon: take exclusive_lock in read mode during ring tests, v5

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This is needed for the next commit, because the lockup detection
will need the read lock to run.

v4 (chk): split out forced fence completion, remove unrelated changes,
          add and handle in_reset flag
v5 (agd5f): rebase fix

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Maarten Lankhorst
2014-08-27 16:45:18 -04:00
committed by Alex Deucher
parent eb98c70990
commit 9bb39ff43e
4 changed files with 27 additions and 23 deletions
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4
drivers/gpu/drm/radeon/radeon_display.c
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@@ -405,7 +405,9 @@ static void radeon_flip_work_func(struct work_struct *__work)
r = radeon_fence_wait(work->fence, false);
if (r == -EDEADLK) {
up_read(&rdev->exclusive_lock);
r = radeon_gpu_reset(rdev);
do {
r = radeon_gpu_reset(rdev);
} while (r == -EAGAIN);
down_read(&rdev->exclusive_lock);
}
if (r)