linux-kernel - Re: [PATCH 3.8-stable] regulator: fixed regulator_bulk

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Date:	Tue, 23 Apr 2013 11:51:35 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	Jonghwan Choi <jhbird.choi@...sung.com>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	'Andrzej Hajda' <a.hajda@...sung.com>,
	'Liam Girdwood' <lrg@...com>,
	'Mark Brown' <broonie@...nsource.wolfsonmicro.com>
Subject: Re: [PATCH 3.8-stable] regulator: fixed regulator_bulk_enable
 unwinding code

On Tue, Apr 23, 2013 at 11:56:25AM +0900, Jonghwan Choi wrote:
> 3.8-stable review patch.  If anyone has any objections, please let me know.

Thanks, I believe this is also applicable to 3.4.y and 3.5.y.

Cheers,
--
Luis

> 
> ------------------
> 
> From: "Andrzej Hajda <a.hajda@...sung.com>"
> 
> commit fbe31057fafebdc2811a7101b8b4a0460f5417d1 upstream.
> 
> Unwinding code disables all successfully enabled regulators.
> Error is logged for every failed regulator.
> 
> Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
> Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
> Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
> ---
>  drivers/regulator/core.c |   10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
> index 5a0f54a..e56185b 100644
> --- a/drivers/regulator/core.c
> +++ b/drivers/regulator/core.c
> @@ -3032,9 +3032,13 @@ int regulator_bulk_enable(int num_consumers,
>  	return 0;
>  
>  err:
> -	pr_err("Failed to enable %s: %d\n", consumers[i].supply, ret);
> -	while (--i >= 0)
> -		regulator_disable(consumers[i].consumer);
> +	for (i = 0; i < num_consumers; i++) {
> +		if (consumers[i].ret < 0)
> +			pr_err("Failed to enable %s: %d\n",
> consumers[i].supply,
> +			       consumers[i].ret);
> +		else
> +			regulator_disable(consumers[i].consumer);
> +	}
>  
>  	return ret;
>  }
> -- 
> 1.7.9.5
> 
> --
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