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From: Alex Williamson <alex.williamson@hp.com>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: David Vrabel <dvrabel@arcom.com>,
	Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: serial: 8250 fails to detect Exar XR16L2551 correctly
Date: Wed, 06 Jul 2005 14:20:31 -0600	[thread overview]
Message-ID: <1120681231.14959.3.camel@tdi> (raw)
In-Reply-To: <20050706195740.A28758@flint.arm.linux.org.uk>

On Wed, 2005-07-06 at 19:57 +0100, Russell King wrote:
> On Tue, Jul 05, 2005 at 03:19:40PM +0100, David Vrabel wrote:
> > The 8250 serial driver detects the Exar XR16L2551 as a 16550A.  The
> > XR16L2551 has an EFR register and sleep capabilities (UART_CAP_FIFO |
> > UART_CAP_EFR | UART_CAP_SLEEP).  However, broken_efr() thinks it's a
> > buggy Exar ST16C255x.
> 
> Grumble!

Double grumble...

> > Perhaps it's okay for the ST16C255x to be detected as something with
> > UART_CAP_EFR | UART_CAP_SLEEP even if it doesn't work? i.e., by removing
> > broken_efr().
> 
> I don't know - maybe Alex Williamson can try your patch out.

   I can, but not till next week when I can get into the office and dig
up the box with the broken A2 rev UARTs.  Let me know if you need an
answer before then.  Thanks,

	Alex

-- 
Alex Williamson                             HP Linux & Open Source Lab


  reply	other threads:[~2005-07-06 20:28 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-05 14:19 serial: 8250 fails to detect Exar XR16L2551 correctly David Vrabel
2005-07-06 18:57 ` Russell King
2005-07-06 20:20   ` Alex Williamson [this message]
2005-07-07 13:20   ` David Vrabel
2005-07-11 19:00     ` Alex Williamson
2005-07-11 19:46       ` Russell King
2005-07-11 20:00         ` Alex Williamson
2005-07-11 20:17           ` Russell King
2005-07-11 21:17             ` Alex Williamson
2005-07-13 17:04               ` Alex Williamson
2005-07-13 18:03                 ` Alex Williamson
2005-07-14 14:40                   ` David Vrabel
2005-07-14 13:46                 ` Russell King
2005-07-15 20:39                   ` Alex Williamson

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