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drm/radeon/kms: properly set accel working flag and bailout when false

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If accel is not working many subsystem such as the ib pool might not be
initialized properly that can lead to segfault inside kernel when cs
ioctl is call with non working acceleration. To avoid this make sure
the accel working flag is false when an error in GPU startup happen and
return EBUSY from cs ioctl if accel is not working.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2012-02-20 17:57:20 -05:00
committed by Dave Airlie
parent f0d14daa69
commit 6b7746e876
13 changed files with 64 additions and 8 deletions
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8
drivers/gpu/drm/radeon/rs600.c
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@@ -876,6 +876,8 @@ static int rs600_startup(struct radeon_device *rdev)
int rs600_resume(struct radeon_device *rdev)
{
int r;
/* Make sur GART are not working */
rs600_gart_disable(rdev);
/* Resume clock before doing reset */
@@ -894,7 +896,11 @@ int rs600_resume(struct radeon_device *rdev)
radeon_surface_init(rdev);
rdev->accel_working = true;
return rs600_startup(rdev);
r = rs600_startup(rdev);
if (r) {
rdev->accel_working = false;
}
return r;
}
int rs600_suspend(struct radeon_device *rdev)