linux-kernel - Re: Serial related oops

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Message-ID: <20070222085413.GB15841@flint.arm.linux.org.uk>
Date:	Thu, 22 Feb 2007 08:54:13 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	"Michael K. Edwards" <medwards.linux@...il.com>
Cc:	Jose Goncalves <jose.goncalves@...v.pt>,
	Frederik Deweerdt <deweerdt@...e.fr>,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: Serial related oops

On Wed, Feb 21, 2007 at 04:34:15PM -0800, Michael K. Edwards wrote:
> Are you using an unpatched gcc 4.1.1?  Its optimizer did nasty things
> to us, at least on an ARM target ...

That's ruled out.  Please think about it for a moment - serial_in()
managed to work correctly most of the time, and then spontaneously
changes its well-defined ABI behaviour in a way that analysis of the
asm doesn't allow it to.

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