RE: [PATCH 2/2 v2] USB: musb: disable double buffering for older RTL versions

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Felipe,
	We are not observing any corruption on OMAPL13x platforms of mentor versions 1.8 and DaVinci DM6xxx mentor version 1.3 -- 1.5.

	Can you provide more details on how the data corruption was related to  mentor double buffering issue.  On OMAP35xx we have tested both Tx and Rx and did not observe any corruption in ISO double buffering mode either.

	I would like to know more details on this issue.

Regards
swami 

-----Original Message-----
From: Felipe Balbi [mailto:felipe.balbi@xxxxxxxxx] 
Sent: Friday, January 29, 2010 3:30 PM
To: Subbrathnam, Swaminathan
Cc: Mike Frysinger; linux-usb@xxxxxxxxxxxxxxx; Balbi Felipe (Nokia-D/Helsinki); uclinux-dist-devel@xxxxxxxxxxxxxxxxxxxx; Greg Kroah-Hartman; Cliff Cai
Subject: Re: [PATCH 2/2 v2] USB: musb: disable double buffering for older RTL versions

On Fri, Jan 29, 2010 at 09:07:40AM +0100, ext Subbrathnam, Swaminathan wrote:
>Mike,
>	This issue is specific to Blackfin architecture.  Platforms like 
>	DaVinci, OMAP etc. do not have this restriction or have not 
>	observed any hangs in double buffering mode.
>
>	I do not see the change implemented specific Blackfin context.  
>	Pl. modify the patch accordingly.

NAK. I have observed data corruption when using double buffering on 
tusb6010, omap3430 and omap3630.

-- 
balbi
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