Commit 0d9ba869 authored by Amol Lad's avatar Amol Lad Committed by Linus Torvalds
Browse files

[PATCH] drivers/isdn/hysdn: save_flags()/cli(), restore_flags() replaced appropriately



With Karsten Keil <kkeil@suse.de>

save_flags()/cli() pair is replaced with spin_lock_irqsave() and
restore_flags() replaced with spin_unlock_irqrestore()

Tested compile only using allmodconfig
Signed-off-by: default avatarAmol Lad <amol@verismonetworks.com>
Acked-by: default avatarKarsten Keil <kkeil@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent bd5349cf
......@@ -45,11 +45,10 @@ ergo_interrupt(int intno, void *dev_id)
if (!card->irq_enabled)
return IRQ_NONE; /* other device interrupting or irq switched off */
save_flags(flags);
cli(); /* no further irqs allowed */
spin_lock_irqsave(&card->hysdn_lock, flags); /* no further irqs allowed */
if (!(bytein(card->iobase + PCI9050_INTR_REG) & PCI9050_INTR_REG_STAT1)) {
restore_flags(flags); /* restore old state */
spin_unlock_irqrestore(&card->hysdn_lock, flags); /* restore old state */
return IRQ_NONE; /* no interrupt requested by E1 */
}
/* clear any pending ints on the board */
......@@ -61,7 +60,7 @@ ergo_interrupt(int intno, void *dev_id)
/* start kernel task immediately after leaving all interrupts */
if (!card->hw_lock)
schedule_work(&card->irq_queue);
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
return IRQ_HANDLED;
} /* ergo_interrupt */
......@@ -83,10 +82,9 @@ ergo_irq_bh(hysdn_card * card)
dpr = card->dpram; /* point to DPRAM */
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
if (card->hw_lock) {
restore_flags(flags); /* hardware currently unavailable */
spin_unlock_irqrestore(&card->hysdn_lock, flags); /* hardware currently unavailable */
return;
}
card->hw_lock = 1; /* we now lock the hardware */
......@@ -120,7 +118,7 @@ ergo_irq_bh(hysdn_card * card)
card->hw_lock = 0; /* free hardware again */
} while (again); /* until nothing more to do */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
} /* ergo_irq_bh */
......@@ -137,8 +135,7 @@ ergo_stopcard(hysdn_card * card)
#ifdef CONFIG_HYSDN_CAPI
hycapi_capi_stop(card);
#endif /* CONFIG_HYSDN_CAPI */
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
val = bytein(card->iobase + PCI9050_INTR_REG); /* get actual value */
val &= ~(PCI9050_INTR_REG_ENPCI | PCI9050_INTR_REG_EN1); /* mask irq */
byteout(card->iobase + PCI9050_INTR_REG, val);
......@@ -147,7 +144,7 @@ ergo_stopcard(hysdn_card * card)
card->state = CARD_STATE_UNUSED;
card->err_log_state = ERRLOG_STATE_OFF; /* currently no log active */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
} /* ergo_stopcard */
/**************************************************************************/
......@@ -162,12 +159,11 @@ ergo_set_errlog_state(hysdn_card * card, int on)
card->err_log_state = ERRLOG_STATE_OFF; /* must be off */
return;
}
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
if (((card->err_log_state == ERRLOG_STATE_OFF) && !on) ||
((card->err_log_state == ERRLOG_STATE_ON) && on)) {
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
return; /* nothing to do */
}
if (on)
......@@ -175,7 +171,7 @@ ergo_set_errlog_state(hysdn_card * card, int on)
else
card->err_log_state = ERRLOG_STATE_STOP; /* request stop */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
schedule_work(&card->irq_queue);
} /* ergo_set_errlog_state */
......@@ -356,8 +352,7 @@ ergo_waitpofready(struct HYSDN_CARD *card)
if (card->debug_flags & LOG_POF_RECORD)
hysdn_addlog(card, "ERGO: pof boot success");
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
card->state = CARD_STATE_RUN; /* now card is running */
/* enable the cards interrupt */
......@@ -370,7 +365,7 @@ ergo_waitpofready(struct HYSDN_CARD *card)
dpr->ToHyInt = 1;
dpr->ToPcInt = 1; /* interrupt to E1 for all cards */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
if ((hynet_enable & (1 << card->myid))
&& (i = hysdn_net_create(card)))
{
......@@ -448,6 +443,7 @@ ergo_inithardware(hysdn_card * card)
card->waitpofready = ergo_waitpofready;
card->set_errlog_state = ergo_set_errlog_state;
INIT_WORK(&card->irq_queue, (void *) (void *) ergo_irq_bh, card);
card->hysdn_lock = SPIN_LOCK_UNLOCKED;
return (0);
} /* ergo_inithardware */
......@@ -188,6 +188,8 @@ typedef struct HYSDN_CARD {
/* init and deinit stopcard for booting, too */
void (*stopcard) (struct HYSDN_CARD *);
void (*releasehardware) (struct HYSDN_CARD *);
spinlock_t hysdn_lock;
#ifdef CONFIG_HYSDN_CAPI
struct hycapictrl_info {
char cardname[32];
......
......@@ -116,8 +116,7 @@ put_log_buffer(hysdn_card * card, char *cp)
strcpy(ib->log_start, cp); /* set output string */
ib->next = NULL;
ib->proc_ctrl = pd; /* point to own control structure */
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
ib->usage_cnt = pd->if_used;
if (!pd->log_head)
pd->log_head = ib; /* new head */
......@@ -125,7 +124,7 @@ put_log_buffer(hysdn_card * card, char *cp)
pd->log_tail->next = ib; /* follows existing messages */
pd->log_tail = ib; /* new tail */
i = pd->del_lock++; /* get lock state */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
/* delete old entrys */
if (!i)
......@@ -270,14 +269,13 @@ hysdn_log_open(struct inode *ino, struct file *filep)
} else if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) {
/* read access -> log/debug read */
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
pd->if_used++;
if (pd->log_head)
filep->private_data = &pd->log_tail->next;
else
filep->private_data = &pd->log_head;
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
} else { /* simultaneous read/write access forbidden ! */
unlock_kernel();
return (-EPERM); /* no permission this time */
......@@ -301,7 +299,7 @@ hysdn_log_close(struct inode *ino, struct file *filep)
hysdn_card *card;
int retval = 0;
unsigned long flags;
spinlock_t hysdn_lock = SPIN_LOCK_UNLOCKED;
lock_kernel();
if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
......@@ -311,8 +309,7 @@ hysdn_log_close(struct inode *ino, struct file *filep)
/* read access -> log/debug read, mark one further file as closed */
pd = NULL;
save_flags(flags);
cli();
spin_lock_irqsave(&hysdn_lock, flags);
inf = *((struct log_data **) filep->private_data); /* get first log entry */
if (inf)
pd = (struct procdata *) inf->proc_ctrl; /* still entries there */
......@@ -335,7 +332,7 @@ hysdn_log_close(struct inode *ino, struct file *filep)
inf->usage_cnt--; /* decrement usage count for buffers */
inf = inf->next;
}
restore_flags(flags);
spin_unlock_irqrestore(&hysdn_lock, flags);
if (pd)
if (pd->if_used <= 0) /* delete buffers if last file closed */
......
......@@ -155,8 +155,7 @@ hysdn_tx_cfgline(hysdn_card *card, unsigned char *line, unsigned short chan)
if (card->debug_flags & LOG_SCHED_ASYN)
hysdn_addlog(card, "async tx-cfg chan=%d len=%d", chan, strlen(line) + 1);
save_flags(flags);
cli();
spin_lock_irqsave(&card->hysdn_lock, flags);
while (card->async_busy) {
sti();
......@@ -165,7 +164,7 @@ hysdn_tx_cfgline(hysdn_card *card, unsigned char *line, unsigned short chan)
msleep_interruptible(20); /* Timeout 20ms */
if (!--cnt) {
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
return (-ERR_ASYNC_TIME); /* timed out */
}
cli();
......@@ -194,13 +193,13 @@ hysdn_tx_cfgline(hysdn_card *card, unsigned char *line, unsigned short chan)
msleep_interruptible(20); /* Timeout 20ms */
if (!--cnt) {
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
return (-ERR_ASYNC_TIME); /* timed out */
}
cli();
} /* wait for buffer to become free again */
restore_flags(flags);
spin_unlock_irqrestore(&card->hysdn_lock, flags);
if (card->debug_flags & LOG_SCHED_ASYN)
hysdn_addlog(card, "async tx-cfg data send");
......
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