linux-kernel - Re: [PATCH] Reset ps/2 port should psmouse

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Date:	Wed, 14 Apr 2010 14:04:22 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Peter M. Petrakis" <peter.petrakis@...onical.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Reset ps/2 port should psmouse_probe fail before
 retrying

On Wed, 14 Apr 2010 16:46:29 -0400 Peter M. Petrakis wrote:

> Filed a bug on this too:
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=15780
> 
> This particular laptop will lose it's synaptics touch
> pad on return from suspend state. Reloading the psmouse
> module makes no difference. I came up with the attached
> work around which simply calls psmouse_reset on the
> port should the initial probe fail. This solves the problem
> for me and I've tested this on several laptops.
> 
> Initially discovered on Ubuntu 2.6.31 (karmic) and the problem
> continues to exist in lucid 2.6.32. I've filed a bug against
> ubuntu kernel here:
> 
> https://bugs.launchpad.net/oem-priority/+bug/551234
> 
> though the Ubuntu kernel team would really like to get upstream's
> input on the matter before accepting the patch. Please
> let me know what you think. Thanks.

Hi,

Please send patches inline, not as attachments.
Use the full source file path in the patch.
Send the patch to linux-input@...r.kernel.org and cc: the Input
subsystem maintainer.

typo:  s/reseting/resetting/


Other than those 4 things, the patch looks OK to me.
Well, we would prefer not to have the
	((ret = __psmouse_probe(psmouse)) != 0)
inside the for expression if possible.  I.e., make the for(...) simpler.


Please read/review Documentation/SubmittingPatches.  Thanks.

---
~Randy
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