[PATCH] Fix bad data direction in SG_IO

Contrary to what the name misleads you to believe, SG_DXFER_TO_FROM_DEV
is really just a normal read seen from the device side.

This patch fixes http://lkml.org/lkml/2006/10/13/100

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 2dc3264..a19338e 100644 (file)
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -246,10 +246,10 @@ static int sg_io(struct file *file, request_queue_t *q,
                switch (hdr->dxfer_direction) {
                default:
                        return -EINVAL;
-               case SG_DXFER_TO_FROM_DEV:
                case SG_DXFER_TO_DEV:
                        writing = 1;
                        break;
+               case SG_DXFER_TO_FROM_DEV:
                case SG_DXFER_FROM_DEV:
                        break;
                }