From 3d2667826cbb5e2eb8d8c7ee92f74bcb00b36a2f Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Thu, 11 Dec 2014 15:54:07 +0200 Subject: [PATCH] virtio_config: fix virtio_cread_bytes virtio_cread_bytes is implemented incorrectly in case length happens to be 2,4 or 8 bytes: transports and devices will assume it's an integer value that has to be converted to LE format. Let's just do multiple 1-byte reads: this also makes life easier for transports who only need to implement 1,2,4 and 8 byte reads. Signed-off-by: Michael S. Tsirkin --- include/linux/virtio_config.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 7979f850e7ac..a61cd37f088c 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -305,7 +305,10 @@ static inline void virtio_cread_bytes(struct virtio_device *vdev, unsigned int offset, void *buf, size_t len) { - vdev->config->get(vdev, offset, buf, len); + int i; + + for (i = 0; i < len; i++) + vdev->config->get(vdev, offset + i, buf + i, 1); } static inline void virtio_cwrite8(struct virtio_device *vdev, -- 2.39.5