diff mbox series

[5.16,0903/1039] drm/radeon: fix error handling in radeon_driver_open_kms

Message ID 20220124184155.650242882@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Jan. 24, 2022, 6:44 p.m. UTC 
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(-)
diff mbox series

Patch

--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -666,18 +666,18 @@  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 */
@@ -685,7 +685,7 @@  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,
@@ -693,19 +693,21 @@  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;