From: Jiri Slaby riscom8, eliminate busy loop Signed-off-by: Jiri Slaby Signed-off-by: Andrew Morton --- drivers/char/riscom8.c | 12 ++---------- 1 files changed, 2 insertions(+), 10 deletions(-) diff -puN drivers/char/riscom8.c~char-riscom8-eliminate-busy-loop drivers/char/riscom8.c --- a/drivers/char/riscom8.c~char-riscom8-eliminate-busy-loop +++ a/drivers/char/riscom8.c @@ -213,14 +213,6 @@ static inline void rc_release_io_range(s 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 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 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 */ _