linux-kernel - Re: [PATCH 5/5] regmap: Do not call regcache_exit from regcache_lzo

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Message-ID: <20111114154536.GB12690@opensource.wolfsonmicro.com>
Date:	Mon, 14 Nov 2011 15:45:36 +0000
From:	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] regmap: Do not call regcache_exit from
	regcache_lzo_init error path

On Mon, Nov 14, 2011 at 10:40:19AM +0100, Lars-Peter Clausen wrote:
> Calling regcache_exit from regcache_lzo_init is a layering violation and
> might cause double frees. In case of an error only free those structures which
> have been allocated in this function.
> 
> Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
> ---
>  drivers/base/regmap/regcache-lzo.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
> index 226ffc1..b7d1614 100644
> --- a/drivers/base/regmap/regcache-lzo.c
> +++ b/drivers/base/regmap/regcache-lzo.c
> @@ -15,6 +15,8 @@
>  
>  #include "internal.h"
>  
> +static int regcache_lzo_exit(struct regmap *map);
> +
>  struct regcache_lzo_ctx {
>  	void *wmem;
>  	void *dst;
> @@ -193,7 +195,7 @@ static int regcache_lzo_init(struct regmap *map)
>  
>  	return 0;
>  err:
> -	regcache_exit(map);
> +	regcache_lzo_exit(map);
>  	return ret;
>  }
>  
> -- 
> 1.7.7.1
> 
> 

All of them look good.

Acked-by: Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
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