Re: [PATCH] backup timer for UARTs that lose interrupts

[Russell King <rmk+lkml@arm.linux.org.uk>]

On Tue, Nov 08, 2005 at 05:16:32PM -0700, Alex Williamson wrote:
>   I was hoping that would be the solution too.  I just tried enabling
> UART_BUG_TXEN to double check my previous results.  Somehow it makes the
> problem much, much worse.  Instead of being the nuisance it usually is,
> it seems like the UART gets way behind on transmitting bits.  So it
> would probably prevent the unattended reboot stall since we kick it
> every time we want to transmit, but it renders the UART completely
> unusable as a console.  I can't even get it caught up enough to login
> via the serial console w/ UART_BUG_TXEN enabled on the port.  Thanks,

Ok, would you mind fixing the patch so it isn't screwing up the
default use of up->timer please?  You may notice that this timer
is already used, and overwriting up->timer.function is a one-way
process in your patch (which kills off the point of serial8250_timeout).

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 Serial core