linux-kernel - RE: [PATCH 1/2] pinmux: Remove double pin validity check.

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Date:	Thu, 27 Oct 2011 09:37:43 -0700
From:	Stephen Warren <swarren@...dia.com>
To:	Marek Belisko <marek.belisko@...n-nandra.com>,
	"linus.walleij@...aro.org" <linus.walleij@...aro.org>
CC:	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] pinmux: Remove double pin validity check.

Belisko Marek wrote at Wednesday, October 26, 2011 2:57 PM:
> Function pin_is_valid just call pin_desc_get which is in pin_request
> call some line below. Remove pin_is_valid() check.
...
> @@ -112,16 +112,6 @@ static int pin_request(struct pinctrl_dev *pctldev,
> 
>  	dev_dbg(&pctldev->dev, "request pin %d for %s\n", pin, function);
> 
> -	if (!pin_is_valid(pctldev, pin)) {
> -		dev_err(&pctldev->dev, "pin is invalid\n");
> -		return -EINVAL;
> -	}

So that makes sense.

> -
> -	if (!function) {
> -		dev_err(&pctldev->dev, "no function name given\n");
> -		return -EINVAL;
> -	}

But I don't think you want to remove that? Oh actually, perhaps removing
that /is/ valid, since it's an internal function and can't be called with
a NULL function parameter. But, you should mention why in the changelog
so it doesn't look like a mistake.

-- 
nvpublic

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