Re: Fix staircase effect on Altix serial console.

From: Jesse Barnes <jbarnes_at_sgi.com>
Date: 2004-03-04 04:27:09
On Wed, Mar 03, 2004 at 09:19:37AM -0800, Jesse Barnes wrote:
> On Wed, Mar 03, 2004 at 11:57:21AM +0100, Andreas Schwab wrote:
> > The system controller should not change the output in any way.  It's the
> > job of the serial console write function (which is used for printk) to
> 
> Right, but I think our L2 system controller *does* molest the output
> (and the 2.6 console driver relies on this behavior).  I've filed a bug
> with our system controller group to make the behavior of the L2 and L1
> system controllers consistent (I believe you're using an L1), which I
> think is the proper fix.

In case I wasn't clear: I think your patch would be ok for systems that
use L1s, but would result in extra CRs for systems using L2s as their
console, so we really need to fix the system controllers instead.

Thanks,
Jesse
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Received on Wed Mar 3 12:27:34 2004

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