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* [PATCH -next] drm/aperture: Fix missing unlock on error in devm_aperture_acquire()
@ 2021-05-13  8:46 ` Zou Wei
  0 siblings, 0 replies; 4+ messages in thread
From: Zou Wei @ 2021-05-13  8:46 UTC (permalink / raw)
  To: maarten.lankhorst, mripard, tzimmermann, airlied, daniel
  Cc: dri-devel, linux-kernel, Zou Wei

Add the missing unlock before return from function devm_aperture_acquire()
in the error handling case.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
---
 drivers/gpu/drm/drm_aperture.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_aperture.c b/drivers/gpu/drm/drm_aperture.c
index 33bf018..9335d9d 100644
--- a/drivers/gpu/drm/drm_aperture.c
+++ b/drivers/gpu/drm/drm_aperture.c
@@ -164,13 +164,17 @@ static int devm_aperture_acquire(struct drm_device *dev,
 
 	list_for_each(pos, &drm_apertures) {
 		ap = container_of(pos, struct drm_aperture, lh);
-		if (overlap(base, end, ap->base, ap->base + ap->size))
+		if (overlap(base, end, ap->base, ap->base + ap->size)) {
+			mutex_unlock(&drm_apertures_lock);
 			return -EBUSY;
+		}
 	}
 
 	ap = devm_kzalloc(dev->dev, sizeof(*ap), GFP_KERNEL);
-	if (!ap)
+	if (!ap) {
+		mutex_unlock(&drm_apertures_lock);
 		return -ENOMEM;
+	}
 
 	ap->dev = dev;
 	ap->base = base;
-- 
2.6.2


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-05-13 13:08 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-05-13  8:46 [PATCH -next] drm/aperture: Fix missing unlock on error in devm_aperture_acquire() Zou Wei
2021-05-13  8:46 ` Zou Wei
2021-05-13 13:08 ` Thomas Zimmermann
2021-05-13 13:08   ` Thomas Zimmermann

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