From: Christian König christian.koenig@amd.com
commit 4722f463896cc0ef1a6f1c3cb2e171e949831249 upstream.
The return value was never initialized so the cleanup code executed when it isn't even necessary.
Just add proper error handling.
Fixes: ab50cb9df889 ("drm/radeon/radeon_kms: Fix a NULL pointer dereference in radeon_driver_open_kms()") Signed-off-by: Christian König christian.koenig@amd.com Tested-by: Jan Stancek jstancek@redhat.com Tested-by: Borislav Petkov bp@suse.de Reviewed-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/radeon/radeon_kms.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -641,18 +641,18 @@ int radeon_driver_open_kms(struct drm_de fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL); if (unlikely(!fpriv)) { r = -ENOMEM; - goto out_suspend; + goto err_suspend; }
if (rdev->accel_working) { vm = &fpriv->vm; r = radeon_vm_init(rdev, vm); if (r) - goto out_fpriv; + goto err_fpriv;
r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false); if (r) - goto out_vm_fini; + goto err_vm_fini;
/* map the ib pool buffer read only into * virtual address space */ @@ -660,7 +660,7 @@ int radeon_driver_open_kms(struct drm_de rdev->ring_tmp_bo.bo); if (!vm->ib_bo_va) { r = -ENOMEM; - goto out_vm_fini; + goto err_vm_fini; }
r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va, @@ -668,19 +668,21 @@ int radeon_driver_open_kms(struct drm_de RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED); if (r) - goto out_vm_fini; + goto err_vm_fini; } file_priv->driver_priv = fpriv; }
- if (!r) - goto out_suspend; + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); + return 0;
-out_vm_fini: +err_vm_fini: radeon_vm_fini(rdev, vm); -out_fpriv: +err_fpriv: kfree(fpriv); -out_suspend: + +err_suspend: pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); return r;