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Commit be8ff595 authored by Rusty Russell's avatar Rusty Russell
Browse files

virtio: don't require a config space on the console device. 



Strictly, it's only needed when we have features (size or multiport).

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 7abb568d

drivers/char/virtio_console.c

+4 −1
Original line number Diff line number Diff line
@@ -1986,7 +1986,10 @@ static int virtcons_probe(struct virtio_device *vdev) 
	bool multiport;

	bool early = early_put_chars != NULL;



	if (!vdev->config->get) {

	/* We only need a config space if features are offered */

	if (!vdev->config->get &&

	    (virtio_has_feature(vdev, VIRTIO_CONSOLE_F_SIZE)

	     || virtio_has_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT))) {

		dev_err(&vdev->dev, "%s failure: config access disabled\n",

			__func__);

		return -EINVAL;