From: Russell King <rmk+lkml@arm.linux.org.uk>
To: CIJOML <cijoml@volny.cz>
Cc: Linux-kernel@vger.kernel.org
Subject: Re: Having problems with 8250 module in 2.6.20,2.6.21...
Date: Thu, 17 May 2007 23:14:18 +0100 [thread overview]
Message-ID: <20070517221418.GA15498@flint.arm.linux.org.uk> (raw)
In-Reply-To: <200705172220.10469.cijoml@volny.cz>
On Thu, May 17, 2007 at 10:20:10PM +0200, CIJOML wrote:
> Hi,
>
> with kernel 2.6.20 and 2.6.21 I have problem with my good old router
> Dell Dual P2 333MHz.
>
> Module 8250 getts loaded, but UPS driver is unable talk to UPS:
>
> Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
> eth0: setting full-duplex.
> eth1: setting full-duplex.
Looks like no serial ports were found?
> ttyS0: LSR safety check engaged!
> ttyS0: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
But something in userspace tried to add some, but they don't look like
a serial port - the LSR register contains an impossible value for a
serial port to be there.
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
> ttyS1: LSR safety check engaged!
More attempts at trying to open the nonexistent serial port.
> Does anybody work on this problem or can help?
Please track down the last kernel version which worked.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
prev parent reply other threads:[~2007-05-17 22:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-17 20:20 CIJOML
2007-05-17 22:14 ` Russell King [this message]
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