linux-kernel - Re: [PATCH] regulator: core: Add checking set_mode callback in regulator_set_optimum

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Date:	Fri, 13 Apr 2012 22:00:02 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Axel Lin <axel.lin@...il.com>
CC:	linux-kernel@...r.kernel.org,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>
Subject: Re: [PATCH] regulator: core: Add checking set_mode callback in regulator_set_optimum_mode

On 4/13/2012 3:49 AM, Axel Lin wrote:
> diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
> index 1bd71a8..f241671 100644
> --- a/drivers/regulator/core.c
> +++ b/drivers/regulator/core.c
> @@ -2340,6 +2340,11 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load)
>  	 */
>  	ret = -EINVAL;
>  
> +	if (!rdev->desc->ops->set_mode) {
> +		rdev_err(rdev, "no set_mode operation\n");
> +		goto out;
> +	}
> +
>  	/* get output voltage */

regulator_set_mode() just returns an error silently if there isn't a
set_mode() op. Why print an error in this case?

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.

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