linux-kernel - [PATCH] drm/xe: unlock on error path in xe_vm_add_compute_exec

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Message-ID: <fa88d289-9886-474d-b697-b69881b4ddbe@moroto.mountain>
Date: Fri, 5 Jan 2024 15:20:22 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
Cc: Lucas De Marchi <lucas.demarchi@...el.com>,
	Oded Gabbay <ogabbay@...nel.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Rodrigo Vivi <rodrigo.vivi@...el.com>,
	Matthew Brost <matthew.brost@...el.com>,
	intel-xe@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] drm/xe: unlock on error path in
 xe_vm_add_compute_exec_queue()

Drop the "&vm->lock" before returning.

Fixes: 24f947d58fe5 ("drm/xe: Use DRM GPUVM helpers for external- and evicted objects")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/gpu/drm/xe/xe_vm.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 9180f2d2d71d..4aa7979fe6bf 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -332,13 +332,13 @@ int xe_vm_add_compute_exec_queue(struct xe_vm *vm, struct xe_exec_queue *q)
 	down_write(&vm->lock);
 	err = drm_gpuvm_exec_lock(&vm_exec);
 	if (err)
-		return err;
+		goto out_up_write;
 
 	pfence = xe_preempt_fence_create(q, q->compute.context,
 					 ++q->compute.seqno);
 	if (!pfence) {
 		err = -ENOMEM;
-		goto out_unlock;
+		goto out_fini;
 	}
 
 	list_add(&q->compute.link, &vm->preempt.exec_queues);
@@ -361,8 +361,9 @@ int xe_vm_add_compute_exec_queue(struct xe_vm *vm, struct xe_exec_queue *q)
 
 	up_read(&vm->userptr.notifier_lock);
 
-out_unlock:
+out_fini:
 	drm_exec_fini(exec);
+out_up_write:
 	up_write(&vm->lock);
 
 	return err;
-- 
2.42.0