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[SCSI] scsi_dh_emc: fix mode select request setup 

This patch fixes the request setup code for mode selects. I got the fixes from
Hannes Reinecke while trying to hunt down some problems and merged it
into one patch. I am sending it because Hannes is busy with other things.

The patch fixes:
- setting of the length for mode selects.
- setting of the data direction for mode select 10.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Hannes Reinecke 2009-12-02 14:28:48 -06:00 committed by James Bottomley
parent 3a5b27bf6f
commit 6c71dcb28f
1 changed files with 4 additions and 2 deletions
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6
drivers/scsi/device_handler/scsi_dh_emc.c
View File

@ -272,7 +272,7 @@ static struct request *get_req(struct scsi_device *sdev, int cmd,
int len = 0;
rq = blk_get_request(sdev->request_queue,
(cmd == MODE_SELECT) ? WRITE : READ, GFP_NOIO);
(cmd != INQUIRY) ? WRITE : READ, GFP_NOIO);
if (!rq) {
sdev_printk(KERN_INFO, sdev, "get_req: blk_get_request failed");
return NULL;
@ -286,14 +286,17 @@ static struct request *get_req(struct scsi_device *sdev, int cmd,
len = sizeof(short_trespass);
rq->cmd_flags |= REQ_RW;
rq->cmd[1] = 0x10;
rq->cmd[4] = len;
break;
case MODE_SELECT_10:
len = sizeof(long_trespass);
rq->cmd_flags |= REQ_RW;
rq->cmd[1] = 0x10;
rq->cmd[8] = len;
break;
case INQUIRY:
len = CLARIION_BUFFER_SIZE;
rq->cmd[4] = len;
memset(buffer, 0, len);
break;
default:
@ -301,7 +304,6 @@ static struct request *get_req(struct scsi_device *sdev, int cmd,
break;
}
rq->cmd[4] = len;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT |
REQ_FAILFAST_DRIVER;