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virtio: fix off by one device id comparison 

VIRTIO_ID_MAX_NUM is the largest device ID plus 1. Therefore a device id
cannot be greater or equal to VIRTIO_ID_MAX_NUM. Fix the comparison
accordingly.

Fixes: 8fb49b4c7a ("dm: Add a new uclass driver for VirtIO transport devices")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Vincent Stehlé 2021-02-14 19:39:04 +01:00 committed by Tom Rini
parent e420a38fa6
commit 25d34b936c
1 changed files with 1 additions and 1 deletions
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2
drivers/virtio/virtio-uclass.c
View File

@ -227,7 +227,7 @@ static int virtio_uclass_post_probe(struct udevice *udev)
struct udevice *vdev;
int ret;
if (uc_priv->device > VIRTIO_ID_MAX_NUM) {
if (uc_priv->device >= VIRTIO_ID_MAX_NUM) {
debug("(%s): virtio device ID %d exceeds maximum num\n",
udev->name, uc_priv->device);
return 0;