linux-kernel - Re: [PATCH 1/1] atmel uaba : Adding invert vbus

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Message-ID: <4B425F80.2070409@ru.mvista.com>
Date:	Tue, 05 Jan 2010 00:37:04 +0300
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Eirik Aanonsen <EAA@...medical.com>
Cc:	"kernel@...32linux.org" <kernel@...32linux.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] atmel uaba : Adding invert vbus_pin

Hello.

Eirik Aanonsen wrote:

> Adding vbus_pin_inverted so that the usb detect pin can be active high or low.
> This because depending on HW implementation it is better to have active low.
> Also replaced the pio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc);
>
> Signed-off-by: Eirik Aanonsen <eaa@...medical.com>
>   
[...]
> diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
> index 4e970cf..1c469d4 100644
> --- a/drivers/usb/gadget/atmel_usba_udc.c
> +++ b/drivers/usb/gadget/atmel_usba_udc.c
> @@ -320,8 +320,17 @@ static inline void usba_cleanup_debugfs(struct usba_udc *udc)
>  static int vbus_is_present(struct usba_udc *udc)
>  {
>  	if (gpio_is_valid(udc->vbus_pin))
> -		return gpio_get_value(udc->vbus_pin);
> -
> +	{	
> +		if(udc->vbus_pin_inverted)
>   

   Space missing after *if*.

> +		{
> +			if( gpio_get_value(udc->vbus_pin) == 1)
>   

   Space missing after *if* and there should be no space after (.

> +				return 0;
> +			else
> +				return 1;
>   

   Why not simply:

			return !gpio_get_value(udc->vbus_pin);


> +		}
> +		else
>   

   } and *else* should be on the same line.
   Please run your patches thru scripts/checkpatch.pl before submitting...

WBR, Sergei


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