scsi: qla2xxx: Use an on-stack completion in qla24xx_control_vp()

This patch reduces the size of struct srb.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

3 files changed, 8 insertions, 4 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index c9f0169b21ea..6dd2d41713c9 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -545,7 +545,7 @@ typedef struct srb {
         u32 gen2;       /* scratch */
         int rc;
         int retry_count;
-        struct completion comp;
+        struct completion *comp;
         wait_queue_head_t *cwaitq;
         union {
                 struct srb_iocb iocb_cmd;
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 7ab157c079ca..60f6685cb342 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -2570,7 +2570,6 @@ void qla2x00_init_timer(srb_t *sp, unsigned long tmo)
         timer_setup(&sp->u.iocb_cmd.timer, qla2x00_sp_timeout, 0);
         sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
         sp->free = qla2x00_sp_free;
-        init_completion(&sp->comp);
         if (IS_QLAFX00(sp->vha->hw) && sp->type == SRB_FXIOCB_DCMD)
                 init_completion(&sp->u.iocb_cmd.u.fxiocb.fxiocb_comp);
         add_timer(&sp->u.iocb_cmd.timer);
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 099d8e9851cb..b2977e49356b 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -905,7 +905,8 @@ static void qla_ctrlvp_sp_done(void *s, int res)
 {
         struct srb *sp = s;
 
-        complete(&sp->comp);
+        if (sp->comp)
+                complete(sp->comp);
         /* don't free sp here. Let the caller do the free */
 }
 
@@ -922,6 +923,7 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
         struct qla_hw_data *ha = vha->hw;
         int     vp_index = vha->vp_idx;
         struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
+        DECLARE_COMPLETION_ONSTACK(comp);
         srb_t *sp;
 
         ql_dbg(ql_dbg_vport, vha, 0x10c1,
@@ -936,6 +938,7 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
 
         sp->type = SRB_CTRL_VP;
         sp->name = "ctrl_vp";
+        sp->comp = ∁
         sp->done = qla_ctrlvp_sp_done;
         sp->u.iocb_cmd.timeout = qla2x00_async_iocb_timeout;
         qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);
@@ -953,7 +956,9 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
         ql_dbg(ql_dbg_vport, vha, 0x113f, "%s hndl %x submitted\n",
             sp->name, sp->handle);
 
-        wait_for_completion(&sp->comp);
+        wait_for_completion(&comp);
+        sp->comp = NULL;
+
         rval = sp->rc;
         switch (rval) {
         case QLA_FUNCTION_TIMEOUT: