lkml.org 
[lkml]   [2014]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH v3 19/25] virtio_console: enable VQs early on restore
virtio spec requires drivers to set DRIVER_OK before using VQs.
This is set automatically after resume returns, virtio console violated this
rule by adding inbufs, which causes the VQ to be used directly within
restore.

To fix, call virtio_enable_vqs_early before using VQs.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
drivers/char/virtio_console.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 6ebe8f6..2ae843f 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -2184,6 +2184,8 @@ static int virtcons_restore(struct virtio_device *vdev)
if (ret)
return ret;

+ virtio_enable_vqs_early(portdev->vdev);
+
if (use_multiport(portdev))
fill_queue(portdev->c_ivq, &portdev->c_ivq_lock);

--
MST


\
 
 \ /
  Last update: 2014-10-12 14:21    [W:0.105 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site