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>

1 files changed, 1 insertions, 16 deletions

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index b14f64cb9724..a668c88ea150 100644
--- 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))