linux-kernel - [PATCH] drm/virtio: move drm_connector_update_edid

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Message-Id: <20190405044602.2334-1-kraxel@redhat.com>
Date:   Fri,  5 Apr 2019 06:46:02 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     jcmvbkbc@...il.com, Gerd Hoffmann <kraxel@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/virtio: move drm_connector_update_edid_property() call

drm_connector_update_edid_property can sleep, we must not
call it while holding a spinlock.  Move the callsize.

Reported-by: Max Filippov <jcmvbkbc@...il.com>
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 drivers/gpu/drm/virtio/virtgpu_vq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index e62fe24b1a2e..5bb0f0a084e9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -619,11 +619,11 @@ static void virtio_gpu_cmd_get_edid_cb(struct virtio_gpu_device *vgdev,
 	output = vgdev->outputs + scanout;
 
 	new_edid = drm_do_get_edid(&output->conn, virtio_get_edid_block, resp);
+	drm_connector_update_edid_property(&output->conn, new_edid);
 
 	spin_lock(&vgdev->display_info_lock);
 	old_edid = output->edid;
 	output->edid = new_edid;
-	drm_connector_update_edid_property(&output->conn, output->edid);
 	spin_unlock(&vgdev->display_info_lock);
 
 	kfree(old_edid);
-- 
2.18.1