Re: Q: return of pinctrl_register and handing at drivers that usethis function

[Linus Walleij]

On Mon, Jun 18, 2012 at 1:47 PM, devendra.aaru <devendra.aaru@xxxxxxxxx> wrote:

> since the pinctrl_register returns a pointer of structure type "struct
> pinctrl_dev" or NULL if it was failed to register the pinctrl driver,
> so IS_ERR checking is not required?

Yes. (Unless I did something wrong.)

> My understanding about IS_ERR is that its used when the pointer
> addresses are kind of error codes rather actual addresses,
> but are a kind of return codes of functions returning integer types.

You are absolutely right.

Yours,
Linus Walleij
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