From 6b7746e8768e1c550b320d5af761f73e5aa37f76 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Mon, 20 Feb 2012 17:57:20 -0500 Subject: drm/radeon/kms: properly set accel working flag and bailout when false 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 Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/rs600.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/radeon/rs600.c') diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index c05865e5521f..4fc700684dcd 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -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) -- cgit v1.2.3