linux-kernel - [PATCH 5.15 439/917] drm/msm: unlock on error in get_sched

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Message-Id: <20211115165443.671361984@linuxfoundation.org>
Date:   Mon, 15 Nov 2021 17:58:54 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Rob Clark <robdclark@...omium.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 439/917] drm/msm: unlock on error in get_sched_entity()

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit 7425e8167507fe512d8ac0825acda4aebf0a7ca0 ]

Add a missing unlock on the error path if drm_sched_entity_init() fails.

Fixes: 68002469e571 ("drm/msm: One sched entity per process per priority")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Link: https://lore.kernel.org/r/20211011124005.GE15188@kili
Signed-off-by: Rob Clark <robdclark@...omium.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/msm/msm_submitqueue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c
index b8621c6e05546..7cb158bcbcf67 100644
--- a/drivers/gpu/drm/msm/msm_submitqueue.c
+++ b/drivers/gpu/drm/msm/msm_submitqueue.c
@@ -101,6 +101,7 @@ get_sched_entity(struct msm_file_private *ctx, struct msm_ringbuffer *ring,
 
 		ret = drm_sched_entity_init(entity, sched_prio, &sched, 1, NULL);
 		if (ret) {
+			mutex_unlock(&entity_lock);
 			kfree(entity);
 			return ERR_PTR(ret);
 		}
-- 
2.33.0