linux-kernel - Re: staging/rtl8712: unhandled default case in SwLedOn function.

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Date:	Thu, 3 May 2012 10:26:52 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	joseph daniel <josephdanielwalter@...il.com>,
	devel@...verdev.osuosl.org,
	Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: staging/rtl8712: unhandled default case in SwLedOn function.

> This should do:
> 
> Index: staging/drivers/staging/rtl8712/rtl8712_led.c
> ===================================================================
> --- staging.orig/drivers/staging/rtl8712/rtl8712_led.c
> +++ staging/drivers/staging/rtl8712/rtl8712_led.c
> @@ -137,7 +137,8 @@ static void SwLedOn(struct _adapter *pad
>  		r8712_write8(padapter, LEDCFG, LedCfg&0x0f);
>  		break;
>  	default:
> -		break;
> +		WARN_ONCE(1, "Default branch taken in %s\n", __func__);
> +		return;
>  	}
>  	pLed->bLedOn = true;
>  }
> 

Don't just reflexively add extra debug code.

In this case pLed->LedPin is either LED_PIN_LED0 or LED_PIN_LED1.
The LED_PIN_GPIO0 and default cases are never used.  Even if it were
I think we would want to set pLed->bLedOn = true in the default
case.

The code is ugly as pants, but it works fine as is.

regards,
dan carpenter

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