linux-kernel - Re: [PATCH] iio: accel: da280: Drop unnecessarily used braces

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Date:   Mon, 29 Mar 2021 12:54:58 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Mugilraj Dhavachelvan <dmugil2000@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] iio: accel: da280: Drop unnecessarily used braces

Hi,

On 3/29/21 12:52 PM, Andy Shevchenko wrote:
> +Cc: Hans (just for your opinion)
> 
> On Sun, Mar 28, 2021 at 10:40 PM Andy Shevchenko
> <andy.shevchenko@...il.com> wrote:
>> On Sunday, March 28, 2021, Mugilraj Dhavachelvan <dmugil2000@...il.com> wrote:
>>>
>>> As per linux kernel coding style braces are not needed for single
>>> statement.
>>> Checkpatch
>>> warning: braces {} are not necessary for any arm of this statement
>>> 128: FILE: drivers/iio/accel/da280.c:128:
>>>
>>
>> While it’s the correct patch, I would rather recommend making the driver non-ACPI centric. I.e.:
>> - replace that custom function by device_get_match_data() call
>>
>> - replace that condition by something like
>> type = device_get_match_data();
>>
>> - drop ACPI_PTR()
>>
>> - replace acpi.h by mod_devicetable.h and property.h
>>
>> - convert to use ->probe_new()
>>
>>
>>  Everything, except the last one is in one patch, the last one is another patch.

I agree that *carefully* converting to driver to device_get_match_data() would be good.

Regards,

Hans


>>
>>
>>
>>> Signed-off-by: Mugilraj Dhavachelvan <dmugil2000@...il.com>
>>> ---
>>>  drivers/iio/accel/da280.c | 5 ++---
>>>  1 file changed, 2 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/iio/accel/da280.c b/drivers/iio/accel/da280.c
>>> index 227bea2d738b..31f290ae4386 100644
>>> --- a/drivers/iio/accel/da280.c
>>> +++ b/drivers/iio/accel/da280.c
>>> @@ -125,11 +125,10 @@ static int da280_probe(struct i2c_client *client,
>>>         indio_dev->modes = INDIO_DIRECT_MODE;
>>>         indio_dev->channels = da280_channels;
>>>
>>> -       if (ACPI_HANDLE(&client->dev)) {
>>> +       if (ACPI_HANDLE(&client->dev))
>>>                 chip = da280_match_acpi_device(&client->dev);
>>> -       } else {
>>> +       else
>>>                 chip = id->driver_data;
>>> -       }
>>>
>>>         if (chip == da226) {
>>>                 indio_dev->name = "da226";
>