Messages in this thread |  | | | Date | Thu, 17 Nov 2011 11:14:26 +0100 | | From | Wolfram Sang <> | | Subject | Re: [PATCH 5/8] serial: 8250: reject delaying RTS with RS485 |
| |
> The delay must not necessarily be done by hardware. The drivers/tty/serial/crisv10.c > driver, for example, delays through a msleep. > > I don't know if having a software delay in this driver can make sense in some particular > circumstance.
Uuuh, I would be against software delays for the same reason why we don't accept software based direction switching: No guarantees. msleep() might easily delay longer than what was requested. Or are delay_rts values to be interpreted as "delay at least"?
Regards,
Wolfram
-- Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ |[unhandled content-type:application/pgp-signature]
|  |