Hi!
> >> [ Upstream commit ba3684f99f1b25d2a30b6956d02d339d7acb9799 ]
> > Should it use something like 5000*udelay(100), instead, as that has
> > chance to result in closer-to-500msec wait?
>
> the half a second timeout didnt mean to be accurate but a worst case
> scenario...I am not sure accuracy matters.
Well, I'd be afraid that it would wait 5 seconds, not half a
second. udelay(1) may be very inaccurate.
> >> while (!(msm_read(port, UART_SR) & UART_SR_TX_EMPTY)) {
> >> if (msm_read(port, UART_ISR) & UART_ISR_TX_READY)
> >> break;
> >> udelay(1);
> >> + if (!timeout--)
> >> + break;
> >> }
> >> msm_write(port, UART_CR_CMD_RESET_TX_READY, UART_CR);
> >> }
> >
> > Plus, should it do some kind of dev_err() to let users know that
> > something went very wrong with their serial?
>
> I did consider this but then I thought that 1/2 second without
> interrupts on the core should not go unnoticed. But I might be wrong.
Well, maybe it will be noticed, but user will have no idea what caused
it.
Pavel
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Attachment:
signature.asc
Description: Digital signature
