linux-kernel - Re: [PATCH 01/16] crypto: omap-aes: don't treat NULL clk as an error

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Date:	Tue, 11 Jan 2011 17:56:10 +0200 (EET)
From:	Aaro Koskinen <aaro.koskinen@...ia.com>
To:	Jamie Iles <jamie@...ieiles.com>
cc:	linux-kernel@...r.kernel.org,
	Dmitry Kasatkin <dmitry.kasatkin@...ia.com>,
	linux-crypto@...r.kernel.org
Subject: Re: [PATCH 01/16] crypto: omap-aes: don't treat NULL clk as an
 error

Hi,

On Tue, 11 Jan 2011, Jamie Iles wrote:

> clk_get() returns a struct clk cookie to the driver and some platforms
> may return NULL if they only support a single clock.  clk_get() has only
> failed if it returns a ERR_PTR() encoded pointer.
>
> Cc: Dmitry Kasatkin <dmitry.kasatkin@...ia.com>
> Cc: linux-crypto@...r.kernel.org
> Signed-off-by: Jamie Iles <jamie@...ieiles.com>

Reviewed-by: Aaro Koskinen <aaro.koskinen@...ia.com>

> ---
> drivers/crypto/omap-aes.c |    5 +++--
> 1 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
> index 799ca51..24d0f3f 100644
> --- a/drivers/crypto/omap-aes.c
> +++ b/drivers/crypto/omap-aes.c
> @@ -17,6 +17,7 @@
> #include <linux/err.h>
> #include <linux/module.h>
> #include <linux/init.h>
> +#include <linux/err.h>
> #include <linux/errno.h>
> #include <linux/kernel.h>
> #include <linux/clk.h>
> @@ -830,9 +831,9 @@ static int omap_aes_probe(struct platform_device *pdev)
>
> 	/* Initializing the clock */
> 	dd->iclk = clk_get(dev, "ick");
> -	if (!dd->iclk) {
> +	if (IS_ERR(dd->iclk)) {
> 		dev_err(dev, "clock intialization failed.\n");
> -		err = -ENODEV;
> +		err = PTR_ERR(dd->iclk);
> 		goto err_res;
> 	}
>
> -- 
> 1.7.3.4
>
> --
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