linux-kernel - Re: [PATCH 9/9] [media] cx231xx: stop double error reporting

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Date:   Mon, 3 Apr 2017 13:13:41 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     Wolfram Sang <wsa@...-dreams.de>
CC:     <linux-kernel@...r.kernel.org>,
        Peter Korsgaard <peter.korsgaard@...co.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        <linux-i2c@...r.kernel.org>, <linux-iio@...r.kernel.org>,
        <linux-media@...r.kernel.org>
Subject: Re: [PATCH 9/9] [media] cx231xx: stop double error reporting

On 2017-04-03 12:26, Wolfram Sang wrote:
> On Mon, Apr 03, 2017 at 10:38:38AM +0200, Peter Rosin wrote:
>> i2c_mux_add_adapter already logs a message on failure.
>>
>> Signed-off-by: Peter Rosin <peda@...ntia.se>
>> ---
>>  drivers/media/usb/cx231xx/cx231xx-i2c.c | 15 ++++-----------
>>  1 file changed, 4 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c b/drivers/media/usb/cx231xx/cx231xx-i2c.c
>> index 35e9acfe63d3..dff514e147da 100644
>> --- a/drivers/media/usb/cx231xx/cx231xx-i2c.c
>> +++ b/drivers/media/usb/cx231xx/cx231xx-i2c.c
>> @@ -576,17 +576,10 @@ int cx231xx_i2c_mux_create(struct cx231xx *dev)
>>  
>>  int cx231xx_i2c_mux_register(struct cx231xx *dev, int mux_no)
>>  {
>> -	int rc;
>> -
>> -	rc = i2c_mux_add_adapter(dev->muxc,
>> -				 0,
>> -				 mux_no /* chan_id */,
>> -				 0 /* class */);
>> -	if (rc)
>> -		dev_warn(dev->dev,
>> -			 "i2c mux %d register FAILED\n", mux_no);
>> -
>> -	return rc;
>> +	return i2c_mux_add_adapter(dev->muxc,
>> +				   0,
>> +				   mux_no /* chan_id */,
>> +				   0 /* class */);
> 
> Could be argued that the whole function is obsolete now and the
> c231xx-core can call i2c_mux_add_adapter() directly. But maybe this is a
> seperate patch.

Agreed on all counts. BTW, the ..._unregister function below is equally
"obsolete". I'm going to leave the removal of both functions at the
discretion of whomever takes care of cx231xx maintenance...

Cheers,
peda

>>  }
>>  
>>  void cx231xx_i2c_mux_unregister(struct cx231xx *dev)
>> -- 
>> 2.1.4
>>