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OpenCloudOS-Kernel
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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>
This commit is contained in:
Bart Van Assche 2015-01-30 16:22:38 +01:00 committed by James Bottomley
parent 6636e7f455
commit 5af2e38242
1 changed files with 1 additions and 16 deletions
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17
drivers/scsi/sg.c
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@ -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))