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Re: [Xen-devel][PATCH][LINUX] Decode mouse dz event

from [Pat Campbell]

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To:	"Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-devel][PATCH][LINUX] Decode mouse dz event
From:	"Pat Campbell" <plc@xxxxxxxxxx>
Date:	Mon, 10 Dec 2007 07:08:52 -0700
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<Keir.Fraser@xxxxxxxxxxxx> wrote: 
> Applied.
> 
> Can the frontend driver be sure that the dz field will have a sane value
> with older backends that do not support the field? Or should this new field
> be advertised via xenstore?
> 

Patch is backwards compatible.  Packet size has not changed and packet was 
fortunately zero filled in the older code before setting the position values.  
Newer 
frontend coupled with an older backend will always see dz as zero, no wheel 
event.

Pat

>  --  Keir
> 
> On 10/12/07 13:27, "Pat Campbell" <plc@xxxxxxxxxx> wrote:
> 
>> 
>> Decodes mouse event packet dz value and passes it as a wheel event into
>> the input stream.
>> 
>> Please apply to linux- 2.6.18- xen
>> 
>> Signed-    off-    by: Pat Campbell <plc@xxxxxxxxxx>
>> 
>> 
>> 
>> _______________________________________________
>> Xen- devel mailing list
>> Xen- devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen- devel




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