linux-kernel - Re: [PATCH] ASoC: Do not update the cache if write to hardware failed

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Date:	Tue, 23 Nov 2010 10:24:55 +0000
From:	Liam Girdwood <lrg@...mlogic.co.uk>
To:	Axel Lin <axel.lin@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Peter Ujfalusi <peter.ujfalusi@...ia.com>
Subject: Re: [PATCH] ASoC: Do not update the cache if write to hardware
 failed

On Tue, 2010-11-23 at 14:14 +0800, Axel Lin wrote:
> Signed-off-by: Axel Lin <axel.lin@...il.com>
> ---
>  sound/soc/codecs/tpa6130a2.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
> index bfef3da..2d64502 100644
> --- a/sound/soc/codecs/tpa6130a2.c
> +++ b/sound/soc/codecs/tpa6130a2.c
> @@ -77,8 +77,10 @@ static int tpa6130a2_i2c_write(int reg, u8 value)
>  
>  	if (data->power_state) {
>  		val = i2c_smbus_write_byte_data(tpa6130a2_client, reg, value);
> -		if (val < 0)
> +		if (val < 0) {
>  			dev_err(&tpa6130a2_client->dev, "Write failed\n");
> +			return val;
> +		}
>  	}
>  
>  	/* Either powered on or off, we save the context */

Acked-by: Liam Girdwood <lrg@...mlogic.co.uk>
-- 
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
http://www.slimlogic.co.uk

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