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linux-sg2042
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[SCSI] aic7xxx_old, eata_pio, ips, libsas: don't zero out sense_buffer in queuecommand 

LLDs don't need to zero out scsi_cmnd::sense_buffer in queuecommand
since scsi-ml does. This is a preparation of the future changes to
allocate the sense_buffer only when necessary.

Many LLDs zero out the sense_buffer before touching it on the error
case. This patch lets them alone for now because new APIs for them
would be added later on.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: "Salyzyn, Mark" <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
FUJITA Tomonori 2008-01-13 15:46:12 +09:00 committed by James Bottomley
parent 382db811a8
commit 94aa5e5f62
4 changed files with 0 additions and 6 deletions
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1
drivers/scsi/aic7xxx_old.c
View File

@ -10293,7 +10293,6 @@ static int aic7xxx_queue(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
aic7xxx_position(cmd) = scb->hscb->tag;
cmd->scsi_done = fn;
cmd->result = DID_OK;
memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
aic7xxx_error(cmd) = DID_OK;
aic7xxx_status(cmd) = 0;
cmd->host_scribble = NULL;

1
drivers/scsi/eata_pio.c
View File

@ -369,7 +369,6 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
cp = &hd->ccb[y];
memset(cp, 0, sizeof(struct eata_ccb));
memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
cp->status = USED; /* claim free slot */

3
drivers/scsi/ips.c
View File

@ -2736,8 +2736,6 @@ ips_next(ips_ha_t * ha, int intr)
SC->result = DID_OK;
SC->host_scribble = NULL;
memset(SC->sense_buffer, 0, sizeof (SC->sense_buffer));
scb->target_id = SC->device->id;
scb->lun = SC->device->lun;
scb->bus = SC->device->channel;
@ -3821,7 +3819,6 @@ ips_send_cmd(ips_ha_t * ha, ips_scb_t * scb)
/* attempted, a Check Condition occurred, and Sense */
/* Data indicating an Invalid CDB OpCode is returned. */
sp = (char *) scb->scsi_cmd->sense_buffer;
memset(sp, 0, sizeof (scb->scsi_cmd->sense_buffer));
sp[0] = 0x70; /* Error Code */
sp[2] = ILLEGAL_REQUEST; /* Sense Key 5 Illegal Req. */

1
drivers/scsi/libsas/sas_scsi_host.c
View File

@ -148,7 +148,6 @@ static struct sas_task *sas_create_task(struct scsi_cmnd *cmd,
if (!task)
return NULL;
*(u32 *)cmd->sense_buffer = 0;
task->uldd_task = cmd;
ASSIGN_SAS_TASK(cmd, task);