linux-kernel - Re: [PATCH v3 3/3] usb: dwc3: add quirk USB_GADGET_QUIRK_EP_OUT_ALIGNED

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Date:	Wed, 30 Oct 2013 12:35:53 -0500
From:	Felipe Balbi <balbi@...com>
To:	David Cohen <david.a.cohen@...ux.intel.com>
CC:	<balbi@...com>, <gregkh@...uxfoundation.org>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<stern@...land.harvard.edu>, <Paul.Zimmerman@...opsys.com>
Subject: Re: [PATCH v3 3/3] usb: dwc3: add quirk
 USB_GADGET_QUIRK_EP_OUT_ALIGNED_SIZE to gadget driver

On Wed, Oct 30, 2013 at 10:06:18AM -0700, David Cohen wrote:
> DWC3 requires epout to have buffer size aligned to MaxPacketSize value.
> This patch adds necessary quirk for it.
> 
> Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
> ---
>  drivers/usb/dwc3/gadget.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
> index 5452c0f..528c7d7 100644
> --- a/drivers/usb/dwc3/gadget.c
> +++ b/drivers/usb/dwc3/gadget.c
> @@ -2600,6 +2600,12 @@ int dwc3_gadget_init(struct dwc3 *dwc)
>  	dwc->gadget.name		= "dwc3-gadget";
>  
>  	/*
> +	 * Per databook, DWC3 needs buffer size to be aligned to MaxPacketSize
> +	 * on ep out.
> +	 */
> +	dwc->gadget.quirk_ep_out_aligned_size = 1;

just to make it look cooler and neater, could you set to 'true' instead
:-)

-- 
balbi

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