linux-kernel - Re: [PATCHv3 4/4] usb: gadget: get rid of USB_GADGET

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Date:	Mon, 22 Aug 2011 16:51:11 +0200
From:	"Michal Nazarewicz" <mina86@...a86.com>
To:	"Alan Stern" <stern@...land.harvard.edu>
Cc:	"Sebastian Andrzej Siewior" <bigeasy@...utronix.de>,
	"Yang Rui Rui" <ruirui.r.yang@...to.com>,
	"Dave Young" <hidave.darkstar@...il.com>,
	"Felipe Balbi" <balbi@...com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv3 4/4] usb: gadget: get rid of
 USB_GADGET_{DUAL,SUPER}SPEED

> On Sat, 20 Aug 2011, Michal Nazarewicz wrote:
>> --- a/drivers/usb/gadget/dummy_hcd.c
>> +++ b/drivers/usb/gadget/dummy_hcd.c
>> @@ -985,7 +985,7 @@ static int dummy_udc_probe (struct platform_device  
>> *pdev)
>>
>>  	dum->gadget.name = gadget_name;
>>  	dum->gadget.ops = &dummy_ops;
>> -	dum->gadget.max_speed = USB_SPEED_SUPER;;
>> +	dum->gadget.max_speed = USB_SPEED_SUPER;

On Sat, 20 Aug 2011 15:41:17 +0200, Alan Stern <stern@...land.harvard.edu>  
wrote:
> You might as well get this right in patch 2/4.  Then this hunk
> wouldn't be needed.

Sorry about that, I've fixuped the wrong commit

>> --- a/drivers/usb/gadget/inode.c
>> +++ b/drivers/usb/gadget/inode.c
> ...
>> @@ -1773,11 +1767,7 @@ gadgetfs_suspend (struct usb_gadget *gadget)
>>  }
>>
>>  static struct usb_gadget_driver gadgetfs_driver = {
>> -#ifdef	CONFIG_USB_GADGET_DUALSPEED
>>  	.max_speed	= USB_SPEED_HIGH,
>> -#else
>> -	.max_speed	= USB_SPEED_FULL,
>> -#endif

> I'm not sure that a static definition is correct here.  The actual
> max_speed depends on what descriptors the userspace program sends.
> Take a look at the ep_config() routine.

Good catch.  I've changed it to:

if (dev->hs_config)
	gadgetfs_driver.max_speed = USB_SPEED_HIGH;
else
	gadgetfs_driver.max_speed = USB_SPEED_FULL;

just before usb_gadget_probe_driver(), which should do the trick.

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michal "mina86" Nazarewicz    (o o)
ooo +-----<email/xmpp: mnazarewicz@...gle.com>-----ooO--(_)--Ooo--
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