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[PATCH] block: Cleanup CDROMEJECT ioctl

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This is just a basic cleanup. No change in functionality.

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ben Collins 2005-12-19 11:49:24 -08:00 committed by Linus Torvalds
parent 931b11be32
commit f98d2dfd02
1 changed files with 31 additions and 14 deletions
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45
block/scsi_ioctl.c
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@ -442,11 +442,37 @@ static int sg_scsi_ioctl(struct file *file, request_queue_t *q,
return err;
}
/* Send basic block requests */
static int __blk_send_generic(request_queue_t *q, struct gendisk *bd_disk, int cmd, int data)
{
struct request *rq;
int err;
rq = blk_get_request(q, WRITE, __GFP_WAIT);
rq->flags |= REQ_BLOCK_PC;
rq->data = NULL;
rq->data_len = 0;
rq->timeout = BLK_DEFAULT_TIMEOUT;
memset(rq->cmd, 0, sizeof(rq->cmd));
rq->cmd[0] = cmd;
rq->cmd[4] = data;
rq->cmd_len = 6;
err = blk_execute_rq(q, bd_disk, rq, 0);
blk_put_request(rq);
return err;
}
static inline int blk_send_start_stop(request_queue_t *q, struct gendisk *bd_disk, int data)
{
return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
}
int scsi_cmd_ioctl(struct file *file, struct gendisk *bd_disk, unsigned int cmd, void __user *arg)
{
request_queue_t *q;
struct request *rq;
int close = 0, err;
int err;
q = bd_disk->queue;
if (!q)
@ -564,19 +590,10 @@ int scsi_cmd_ioctl(struct file *file, struct gendisk *bd_disk, unsigned int cmd,
err = sg_scsi_ioctl(file, q, bd_disk, arg);
break;
case CDROMCLOSETRAY:
close = 1;
err = blk_send_start_stop(q, bd_disk, 0x03);
break;
case CDROMEJECT:
rq = blk_get_request(q, WRITE, __GFP_WAIT);
rq->flags |= REQ_BLOCK_PC;
rq->data = NULL;
rq->data_len = 0;
rq->timeout = BLK_DEFAULT_TIMEOUT;
memset(rq->cmd, 0, sizeof(rq->cmd));
rq->cmd[0] = GPCMD_START_STOP_UNIT;
rq->cmd[4] = 0x02 + (close != 0);
rq->cmd_len = 6;
err = blk_execute_rq(q, bd_disk, rq, 0);
blk_put_request(rq);
err = blk_send_start_stop(q, bd_disk, 0x02);
break;
default:
err = -ENOTTY;