sg: remove an unused variable

The 'data_dir' variable is not used in sg_common_write(), hence
remove this variable.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index b14f64cb97245ce8d50f21d3e83683831e71aa95..a668c88ea150f75a43281da4ed8168c9012dffd6 100644 (file)
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -763,7 +763,7 @@ static int
 sg_common_write(Sg_fd * sfp, Sg_request * srp,
                unsigned char *cmnd, int timeout, int blocking)
 {
-       int k, data_dir, at_head;
+       int k, at_head;
        Sg_device *sdp = sfp->parentdp;
        sg_io_hdr_t *hp = &srp->header;
 
@@ -793,21 +793,6 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
                return -ENODEV;
        }
 
-       switch (hp->dxfer_direction) {
-       case SG_DXFER_TO_FROM_DEV:
-       case SG_DXFER_FROM_DEV:
-               data_dir = DMA_FROM_DEVICE;
-               break;
-       case SG_DXFER_TO_DEV:
-               data_dir = DMA_TO_DEVICE;
-               break;
-       case SG_DXFER_UNKNOWN:
-               data_dir = DMA_BIDIRECTIONAL;
-               break;
-       default:
-               data_dir = DMA_NONE;
-               break;
-       }
        hp->duration = jiffies_to_msecs(jiffies);
        if (hp->interface_id != '\0' && /* v3 (or later) interface */
            (SG_FLAG_Q_AT_TAIL & hp->flags))