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Date: Wed, 12 Apr 2017 15:11:47 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: stable@vger.kernel.org, nsekhar@ti.com, rogerq@ti.com,
        januszx.dziedzic@intel.com
Subject: Re: [PATCH v4.4] usb: dwc3: gadget: delay unmap of bounced requests
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References: <20170411072815.24563-1-felipe.balbi@linux.intel.com>
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On Tue, Apr 11, 2017 at 10:28:15AM +0300, Felipe Balbi wrote:
> From: Janusz Dziedzic <januszx.dziedzic@intel.com>
> 
> commit de288e36fe33f7e06fa272bc8e2f85aa386d99aa upstream.
> 
> In the case of bounced ep0 requests, we must delay DMA operation until
> after ->complete() otherwise we might overwrite contents of req->buf.
> 
> This caused problems with RNDIS gadget.
> 
> Cc: <stable@vger.kernel.org> # v4.4 v4.9
> Fixes: d62145929992 ("usb: dwc3: gadget: always unmap EP0 requests")
> Signed-off-by: Janusz Dziedzic <januszx.dziedzic@intel.com>
> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
> ---
> 
> this should apply cleanly to today's v4.4-stable. Thanks

Thanks for the backport, now applied.

greg k-h