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

From: Russell King (rmk+lkml_at_arm.linux.org.uk)
Date: 11/10/05

  • Next message: Adrian Bunk: "Re: [PATCH 8/8] Inline 3 functions" 
    Date:	Thu, 10 Nov 2005 10:44:19 +0000
To: Alex Williamson <alex.williamson@hp.com>

    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
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  • Next message: Adrian Bunk: "Re: [PATCH 8/8] Inline 3 functions"

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