Re: [PATCH] sound: use PTR_ERR to fix the value of the return

[Wang Jing <windsdaemon@gmail.com>]

On 2012年11月14日 12:58, Tushar Behera wrote:
> On 11/13/2012 05:49 PM, Wang Jing wrote:
>> From: wangjing <wangjing@wangjing.(none)>
>>
>> This patch use the macro PTR_ERR to modify the value of the return
>>
>> Signed-off-by: wangjing <wangjing@wangjing.(none)>
>> ---
>>   sound/soc/samsung/smdk_spdif.c |   30 +++++++++++++++---------------
>>   1 file changed, 15 insertions(+), 15 deletions(-)
>>
>> diff --git a/sound/soc/samsung/smdk_spdif.c b/sound/soc/samsung/smdk_spdif.c
>> index beaa9c1..8f78482 100644
>> --- a/sound/soc/samsung/smdk_spdif.c
>> +++ b/sound/soc/samsung/smdk_spdif.c
>> @@ -28,32 +28,29 @@ static int set_audio_clock_heirachy(struct platform_device *pdev)
>>   
>>   	fout_epll = clk_get(NULL, "fout_epll");
>>   	if (IS_ERR(fout_epll)) {
>> -		printk(KERN_WARNING "%s: Cannot find fout_epll.\n",
>> -				__func__);
>> -		return -EINVAL;
>> +		printk(KERN_ERR "%s: Cannot find fout_epll.\n", __func__);
>> +		ret = PTR_ERR(fout_epll);
>> +		return ret;
> We can have a single statement for the above two statements.
>
> 		return PTR_ERR(fout_epll);
>
>>   	}
>>   
>>   	mout_epll = clk_get(NULL, "mout_epll");
>>   	if (IS_ERR(mout_epll)) {
>> -		printk(KERN_WARNING "%s: Cannot find mout_epll.\n",
>> -				__func__);
>> -		ret = -EINVAL;
>> +		printk(KERN_ERR "%s: Cannot find mout_epll.\n", __func__);
>> +		ret = PTR_ERR(mout_epll);
>>   		goto out1;
>>   	}
>>   
>>   	sclk_audio0 = clk_get(&pdev->dev, "sclk_audio");
>>   	if (IS_ERR(sclk_audio0)) {
>> -		printk(KERN_WARNING "%s: Cannot find sclk_audio.\n",
>> -				__func__);
>> -		ret = -EINVAL;
>> +		printk(KERN_ERR "%s: Cannot find sclk_audio.\n", __func__);
>> +		ret = PTR_ERR(sclk_audio0);
>>   		goto out2;
>>   	}
>>   
>>   	sclk_spdif = clk_get(NULL, "sclk_spdif");
>>   	if (IS_ERR(sclk_spdif)) {
>> -		printk(KERN_WARNING "%s: Cannot find sclk_spdif.\n",
>> -				__func__);
>> -		ret = -EINVAL;
>> +		printk(KERN_ERR "%s: Cannot find sclk_spdif.\n", __func__);
>> +		ret = PTR_ERR(sclk_spdif);
>>   		goto out3;
>>   	}
>>   
>> @@ -81,11 +78,13 @@ static int set_audio_clock_rate(unsigned long epll_rate,
>>   				unsigned long audio_rate)
>>   {
>>   	struct clk *fout_epll, *sclk_spdif;
>> +	int ret = 0;
>>   
>>   	fout_epll = clk_get(NULL, "fout_epll");
>>   	if (IS_ERR(fout_epll)) {
>>   		printk(KERN_ERR "%s: failed to get fout_epll\n", __func__);
>> -		return -ENOENT;
>> +		ret = PTR_ERR(fout_epll);
>> +		return ret;
> Same as above.
>
>>   	}
>>   
>>   	clk_set_rate(fout_epll, epll_rate);
>> @@ -94,13 +93,14 @@ static int set_audio_clock_rate(unsigned long epll_rate,
>>   	sclk_spdif = clk_get(NULL, "sclk_spdif");
>>   	if (IS_ERR(sclk_spdif)) {
>>   		printk(KERN_ERR "%s: failed to get sclk_spdif\n", __func__);
>> -		return -ENOENT;
>> +		ret = PTR_ERR(sclk_spdif);
>> +		return ret;
> Same as above.
>
>>   	}
>>   
>>   	clk_set_rate(sclk_spdif, audio_rate);
>>   	clk_put(sclk_spdif);
>>   
>> -	return 0;
>> +	return ret;
>>   }
>>   
>>   static int smdk_hw_params(struct snd_pcm_substream *substream,
>>
>
Thanks ,I'll submit it again.