[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>
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 8f8db5f..2b402fa 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -10293,7 +10293,6 @@
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;
diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c
index 9579507..b5a6092 100644
--- a/drivers/scsi/eata_pio.c
+++ b/drivers/scsi/eata_pio.c
@@ -369,7 +369,6 @@
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 */
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index e54d30c..b1b2295 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -2736,8 +2736,6 @@
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 @@
/* 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. */
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 828fed1..9c04225 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -148,7 +148,6 @@
if (!task)
return NULL;
- *(u32 *)cmd->sense_buffer = 0;
task->uldd_task = cmd;
ASSIGN_SAS_TASK(cmd, task);
