linux-kernel - Re: [PATCH v2] usb: ffs: fix regression when quirk_ep_out_aligned

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Date:	Mon, 13 Oct 2014 10:32:12 -0500
From:	Felipe Balbi <balbi@...com>
To:	David Cohen <david.a.cohen@...ux.intel.com>
CC:	<balbi@...com>, <gregkh@...uxfoundation.org>, <mina86@...a86.com>,
	<r.baldyga@...sung.com>, <linux-usb@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>,
	Qiuxu Zhuo <qiuxu.zhuo@...el.com>
Subject: Re: [PATCH v2] usb: ffs: fix regression when
 quirk_ep_out_aligned_size flag is set

On Wed, Oct 08, 2014 at 02:12:18PM -0700, David Cohen wrote:
> The commit '2e4c7553cd usb: gadget: f_fs: add aio support' broke the
> quirk implemented to align buffer size to maxpacketsize on out endpoint.
> As result, functionfs does not work on Intel platforms using dwc3 driver
> (i.e. Bay Trail and Merrifield). This patch fixes the issue.
> 
> This code is based on a previous Qiuxu's patch.
> 
> Fixes: 2e4c7553cd (usb: gadget: f_fs: add aio support)
> Cc: <stable@...r.kernel.org> # v3.16+
> Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
> Acked-by: Michal Nazarewicz <mina86@...a86.com>
> ---
> 
> Hi,
> 
> Since this is a feature that worked in past, this is meant for stable
> versions >= 3.16 too.
> 
> v1 to v2: just added Fixes, Cc and Acked-by lines on patch description.

this adds a build warning for use of maybe unitialized data_len. Plese
fix.

-- 
balbi

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