Re: [patch 10/14] serial/crisv10: replace schedule_timeout() with msleep()

[Andrew Morton <akpm@osdl.org>]

domen@coderock.org wrote:
>
> Use msleep() instead of schedule_timeout() to guarantee the task
>  delays as expected. The current code uses TASK_INTERRUPTIBLE, but does not care
>  about signals, so I believe msleep() should be ok.
> 
>  Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
>  Signed-off-by: Domen Puncer <domen@coderock.org>
>  ---
> 
> 
>   kj-domen/drivers/serial/crisv10.c |    6 ++----
>   1 files changed, 2 insertions(+), 4 deletions(-)
> 
>  diff -puN drivers/serial/crisv10.c~msleep-drivers_serial_crisv10 drivers/serial/crisv10.c
>  --- kj/drivers/serial/crisv10.c~msleep-drivers_serial_crisv10	2005-03-05 16:10:52.000000000 +0100
>  +++ kj-domen/drivers/serial/crisv10.c	2005-03-05 16:10:52.000000000 +0100
>  @@ -3757,10 +3757,8 @@ rs_write(struct tty_struct * tty, int fr
>   		e100_enable_rx_irq(info);
>   #endif
>   
>  -		if (info->rs485.delay_rts_before_send > 0) {
>  -			set_current_state(TASK_INTERRUPTIBLE);
>  -			schedule_timeout((info->rs485.delay_rts_before_send * HZ)/1000);
>  -		}
>  +		if (info->rs485.delay_rts_before_send > 0)
>  +			msleep(info->rs485.delay_rts_before_send);

Behavioural change: we'll no longer break out of the sleep if a signal is
pending.  Which probably means you fixed a bug ;)

Please work it with Mikael.