linux-kernel - [PATCH 2/9] drm/nouveau/kms: Fix rpm leak in nouveau_connector

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Message-Id: <20200729213703.119137-3-lyude@redhat.com>
Date:   Wed, 29 Jul 2020 17:36:56 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     nouveau@...ts.freedesktop.org
Cc:     stable@...r.kernel.org, Ben Skeggs <bskeggs@...hat.com>,
        dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Karol Herbst <kherbst@...hat.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/9] drm/nouveau/kms: Fix rpm leak in nouveau_connector_hotplug()

Found another one, we forget to drop the runtime PM reference we grab
here in the event of a failure. So, do that.

Signed-off-by: Lyude Paul <lyude@...hat.com>
Fixes: 3e1a12754d4d ("drm/nouveau: Fix deadlocks in nouveau_connector_detect()")
Cc: stable@...r.kernel.org
Cc: Ben Skeggs <bskeggs@...hat.com>
Cc: dri-devel@...ts.freedesktop.org
Cc: nouveau@...ts.freedesktop.org
Cc: <stable@...r.kernel.org> # v4.19+
---
 drivers/gpu/drm/nouveau/nouveau_connector.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 38e226b8cfd05..ab35153e31b72 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1188,6 +1188,9 @@ nouveau_connector_hotplug(struct nvif_notify *notify)
 	} else if (ret != 1 && ret != -EACCES) {
 		NV_WARN(drm, "HPD on %s dropped due to RPM failure: %d\n",
 			name, ret);
+
+		pm_runtime_mark_last_busy(drm->dev->dev);
+		pm_runtime_put_autosuspend(drm->dev->dev);
 		return NVIF_NOTIFY_DROP;
 	}
 
-- 
2.26.2