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s390/ctcm: don't use intparm for channel IO 

ctcm passes an intparm when calling ccw_device_*(), even though
ctcm_irq_handler() later makes no use of this.

To reduce the confusion, consistently pass 0 as intparm instead.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2019-08-20 16:46:42 +02:00 committed by David S. Miller
parent 59b757a9bf
commit 4f6e01f3d6
3 changed files with 20 additions and 34 deletions
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42
drivers/s390/net/ctcm_fsms.c
View File

@ -307,8 +307,7 @@ static void chx_txdone(fsm_instance *fi, int event, void *arg)
ch->ccw[1].count = ch->trans_skb->len; ch->ccw[1].count = ch->trans_skb->len;
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch); fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
ch->prof.send_stamp = jiffies; ch->prof.send_stamp = jiffies;
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
ch->prof.doios_multi++; ch->prof.doios_multi++;
if (rc != 0) { if (rc != 0) {
priv->stats.tx_dropped += i; priv->stats.tx_dropped += i;
@ -417,8 +416,7 @@ static void chx_rx(fsm_instance *fi, int event, void *arg)
if (ctcm_checkalloc_buffer(ch)) if (ctcm_checkalloc_buffer(ch))
return; return;
ch->ccw[1].count = ch->max_bufsize; ch->ccw[1].count = ch->max_bufsize;
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (rc != 0) if (rc != 0)
ctcm_ccw_check_rc(ch, rc, "normal RX"); ctcm_ccw_check_rc(ch, rc, "normal RX");
} }
@ -478,8 +476,7 @@ static void chx_firstio(fsm_instance *fi, int event, void *arg)
fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == CTCM_READ) fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == CTCM_READ)
? CTC_STATE_RXINIT : CTC_STATE_TXINIT); ? CTC_STATE_RXINIT : CTC_STATE_TXINIT);
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (rc != 0) { if (rc != 0) {
fsm_deltimer(&ch->timer); fsm_deltimer(&ch->timer);
fsm_newstate(fi, CTC_STATE_SETUPWAIT); fsm_newstate(fi, CTC_STATE_SETUPWAIT);
@ -527,8 +524,7 @@ static void chx_rxidle(fsm_instance *fi, int event, void *arg)
return; return;
ch->ccw[1].count = ch->max_bufsize; ch->ccw[1].count = ch->max_bufsize;
fsm_newstate(fi, CTC_STATE_RXIDLE); fsm_newstate(fi, CTC_STATE_RXIDLE);
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (rc != 0) { if (rc != 0) {
fsm_newstate(fi, CTC_STATE_RXINIT); fsm_newstate(fi, CTC_STATE_RXINIT);
ctcm_ccw_check_rc(ch, rc, "initial RX"); ctcm_ccw_check_rc(ch, rc, "initial RX");
@ -571,8 +567,7 @@ static void ctcm_chx_setmode(fsm_instance *fi, int event, void *arg)
/* Such conditional locking is undeterministic in /* Such conditional locking is undeterministic in
* static view. => ignore sparse warnings here. */ * static view. => ignore sparse warnings here. */
rc = ccw_device_start(ch->cdev, &ch->ccw[6], rc = ccw_device_start(ch->cdev, &ch->ccw[6], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (event == CTC_EVENT_TIMER) /* see above comments */ if (event == CTC_EVENT_TIMER) /* see above comments */
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) { if (rc != 0) {
@ -637,7 +632,7 @@ static void ctcm_chx_start(fsm_instance *fi, int event, void *arg)
fsm_newstate(fi, CTC_STATE_STARTWAIT); fsm_newstate(fi, CTC_STATE_STARTWAIT);
fsm_addtimer(&ch->timer, 1000, CTC_EVENT_TIMER, ch); fsm_addtimer(&ch->timer, 1000, CTC_EVENT_TIMER, ch);
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_halt(ch->cdev, (unsigned long)ch); rc = ccw_device_halt(ch->cdev, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) { if (rc != 0) {
if (rc != -EBUSY) if (rc != -EBUSY)
@ -672,7 +667,7 @@ static void ctcm_chx_haltio(fsm_instance *fi, int event, void *arg)
* static view. => ignore sparse warnings here. */ * static view. => ignore sparse warnings here. */
oldstate = fsm_getstate(fi); oldstate = fsm_getstate(fi);
fsm_newstate(fi, CTC_STATE_TERM); fsm_newstate(fi, CTC_STATE_TERM);
rc = ccw_device_halt(ch->cdev, (unsigned long)ch); rc = ccw_device_halt(ch->cdev, 0);
if (event == CTC_EVENT_STOP) if (event == CTC_EVENT_STOP)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
@ -799,7 +794,7 @@ static void ctcm_chx_setuperr(fsm_instance *fi, int event, void *arg)
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch); fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
if (!IS_MPC(ch) && if (!IS_MPC(ch) &&
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ)) { (CHANNEL_DIRECTION(ch->flags) == CTCM_READ)) {
int rc = ccw_device_halt(ch->cdev, (unsigned long)ch); int rc = ccw_device_halt(ch->cdev, 0);
if (rc != 0) if (rc != 0)
ctcm_ccw_check_rc(ch, rc, ctcm_ccw_check_rc(ch, rc,
"HaltIO in chx_setuperr"); "HaltIO in chx_setuperr");
@ -851,7 +846,7 @@ static void ctcm_chx_restart(fsm_instance *fi, int event, void *arg)
/* Such conditional locking is a known problem for /* Such conditional locking is a known problem for
* sparse because its undeterministic in static view. * sparse because its undeterministic in static view.
* Warnings should be ignored here. */ * Warnings should be ignored here. */
rc = ccw_device_halt(ch->cdev, (unsigned long)ch); rc = ccw_device_halt(ch->cdev, 0);
if (event == CTC_EVENT_TIMER) if (event == CTC_EVENT_TIMER)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) { if (rc != 0) {
@ -947,8 +942,8 @@ static void ctcm_chx_rxdisc(fsm_instance *fi, int event, void *arg)
ch2 = priv->channel[CTCM_WRITE]; ch2 = priv->channel[CTCM_WRITE];
fsm_newstate(ch2->fsm, CTC_STATE_DTERM); fsm_newstate(ch2->fsm, CTC_STATE_DTERM);
ccw_device_halt(ch->cdev, (unsigned long)ch); ccw_device_halt(ch->cdev, 0);
ccw_device_halt(ch2->cdev, (unsigned long)ch2); ccw_device_halt(ch2->cdev, 0);
} }
/** /**
@ -1041,8 +1036,7 @@ static void ctcm_chx_txretry(fsm_instance *fi, int event, void *arg)
ctcmpc_dumpit((char *)&ch->ccw[3], ctcmpc_dumpit((char *)&ch->ccw[3],
sizeof(struct ccw1) * 3); sizeof(struct ccw1) * 3);
rc = ccw_device_start(ch->cdev, &ch->ccw[3], rc = ccw_device_start(ch->cdev, &ch->ccw[3], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (event == CTC_EVENT_TIMER) if (event == CTC_EVENT_TIMER)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev),
saveflags); saveflags);
@ -1361,8 +1355,7 @@ static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg)
ch->prof.send_stamp = jiffies; ch->prof.send_stamp = jiffies;
if (do_debug_ccw) if (do_debug_ccw)
ctcmpc_dumpit((char *)&ch->ccw[0], sizeof(struct ccw1) * 3); ctcmpc_dumpit((char *)&ch->ccw[0], sizeof(struct ccw1) * 3);
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
ch->prof.doios_multi++; ch->prof.doios_multi++;
if (rc != 0) { if (rc != 0) {
priv->stats.tx_dropped += i; priv->stats.tx_dropped += i;
@ -1462,8 +1455,7 @@ again:
if (dolock) if (dolock)
spin_lock_irqsave( spin_lock_irqsave(
get_ccwdev_lock(ch->cdev), saveflags); get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (dolock) /* see remark about conditional locking */ if (dolock) /* see remark about conditional locking */
spin_unlock_irqrestore( spin_unlock_irqrestore(
get_ccwdev_lock(ch->cdev), saveflags); get_ccwdev_lock(ch->cdev), saveflags);
@ -1569,8 +1561,7 @@ void ctcmpc_chx_rxidle(fsm_instance *fi, int event, void *arg)
if (event == CTC_EVENT_START) if (event == CTC_EVENT_START)
/* see remark about conditional locking */ /* see remark about conditional locking */
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_start(ch->cdev, &ch->ccw[0], rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (event == CTC_EVENT_START) if (event == CTC_EVENT_START)
spin_unlock_irqrestore( spin_unlock_irqrestore(
get_ccwdev_lock(ch->cdev), saveflags); get_ccwdev_lock(ch->cdev), saveflags);
@ -1825,8 +1816,7 @@ static void ctcmpc_chx_send_sweep(fsm_instance *fsm, int event, void *arg)
spin_lock_irqsave(get_ccwdev_lock(wch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(wch->cdev), saveflags);
wch->prof.send_stamp = jiffies; wch->prof.send_stamp = jiffies;
rc = ccw_device_start(wch->cdev, &wch->ccw[3], rc = ccw_device_start(wch->cdev, &wch->ccw[3], 0, 0xff, 0);
(unsigned long) wch, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(wch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(wch->cdev), saveflags);
if ((grp->sweep_req_pend_num == 0) && if ((grp->sweep_req_pend_num == 0) &&

6
drivers/s390/net/ctcm_main.c
View File

@ -569,8 +569,7 @@ static int ctcm_transmit_skb(struct channel *ch, struct sk_buff *skb)
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch); fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
ch->prof.send_stamp = jiffies; ch->prof.send_stamp = jiffies;
rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (ccw_idx == 3) if (ccw_idx == 3)
ch->prof.doios_single++; ch->prof.doios_single++;
@ -833,8 +832,7 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
ch->prof.send_stamp = jiffies; ch->prof.send_stamp = jiffies;
rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (ccw_idx == 3) if (ccw_idx == 3)
ch->prof.doios_single++; ch->prof.doios_single++;

6
drivers/s390/net/ctcm_mpc.c
View File

@ -1523,8 +1523,7 @@ void mpc_action_send_discontact(unsigned long thischan)
unsigned long saveflags = 0; unsigned long saveflags = 0;
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags); spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
rc = ccw_device_start(ch->cdev, &ch->ccw[15], rc = ccw_device_start(ch->cdev, &ch->ccw[15], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) { if (rc != 0) {
@ -1797,8 +1796,7 @@ static void mpc_action_side_xid(fsm_instance *fsm, void *arg, int side)
} }
fsm_addtimer(&ch->timer, 5000 , CTC_EVENT_TIMER, ch); fsm_addtimer(&ch->timer, 5000 , CTC_EVENT_TIMER, ch);
rc = ccw_device_start(ch->cdev, &ch->ccw[8], rc = ccw_device_start(ch->cdev, &ch->ccw[8], 0, 0xff, 0);
(unsigned long)ch, 0xff, 0);
if (gotlock) /* see remark above about conditional locking */ if (gotlock) /* see remark above about conditional locking */
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags); spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);