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Char: riscom8, eliminate busy loop 

riscom8, eliminate busy loop

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-07-17 04:05:20 -07:00 committed by Linus Torvalds
parent 3e98cee717
commit c4ebd92777
1 changed files with 2 additions and 10 deletions
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12
drivers/char/riscom8.c
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@ -213,14 +213,6 @@ static inline void rc_release_io_range(struct riscom_board * const bp)
release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1);
}
/* Must be called with enabled interrupts */
static inline void rc_long_delay(unsigned long delay)
{
unsigned long i;
for (i = jiffies + delay; time_after(i,jiffies); ) ;
}
/* Reset and setup CD180 chip */
static void __init rc_init_CD180(struct riscom_board const * bp)
{
@ -231,7 +223,7 @@ static void __init rc_init_CD180(struct riscom_board const * bp)
rc_wait_CCR(bp); /* Wait for CCR ready */
rc_out(bp, CD180_CCR, CCR_HARDRESET); /* Reset CD180 chip */
sti();
rc_long_delay(HZ/20); /* Delay 0.05 sec */
msleep(50); /* Delay 0.05 sec */
cli();
rc_out(bp, CD180_GIVR, RC_ID); /* Set ID for this chip */
rc_out(bp, CD180_GICR, 0); /* Clear all bits */
@ -280,7 +272,7 @@ static int __init rc_probe(struct riscom_board *bp)
rc_wait_CCR(bp);
rc_out(bp, CD180_CCR, CCR_TXEN); /* Enable transmitter */
rc_out(bp, CD180_IER, IER_TXRDY); /* Enable tx empty intr */
rc_long_delay(HZ/20);
msleep(50);
irqs = probe_irq_off(irqs);
val1 = rc_in(bp, RC_BSR); /* Get Board Status reg */
val2 = rc_in(bp, RC_ACK_TINT); /* ACK interrupt */