Hi Hans,
> On 06/02/2024 06:05, Bhavin Sharma wrote:
>> Hi Hans,
>>
> >> Hi Bhavin,
>>
>>> On 02/01/2024 15:27, Bhavin Sharma wrote:
>>>> WARNING: Missing a blank line after declarations
>>>>
>>>> Signed-off-by: Bhavin Sharma <bhavin.sharma@xxxxxxxxxxxxxxxxx>
>>>> ---
>>>> drivers/media/i2c/adv7180.c | 27 ++++++++++++++++++---------
>>>> 1 file changed, 18 insertions(+), 9 deletions(-)
>>>>
>>>> diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
>>>> index 54134473186b..0023a546b3c9 100644
>>>> --- a/drivers/media/i2c/adv7180.c
>>>> +++ b/drivers/media/i2c/adv7180.c
>>>> @@ -335,8 +335,9 @@ static u32 adv7180_status_to_v4l2(u8 status1)
>>>> static int __adv7180_status(struct adv7180_state *state, u32 *status,
>>>> v4l2_std_id *std)
>>>> {
>>>> - int status1 = adv7180_read(state, ADV7180_REG_STATUS1);
>>>> + int status1;
>>>>
>>>> + status1 = adv7180_read(state, ADV7180_REG_STATUS1);
>>>> if (status1 < 0)
>>>> return status1;
>>>>
>>>> @@ -356,7 +357,9 @@ static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
>>>> static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
>>>> {
>>>> struct adv7180_state *state = to_state(sd);
>>>> - int err = mutex_lock_interruptible(&state->mutex);
>>>> + int err;
>>>> +
>>>> + err = mutex_lock_interruptible(&state->mutex);
>>
>>> The problem here is the missing empty line, not that 'int err = <something>;' part.
>>> So just add the empty line and don't split up the variable assignment.
>>
>> Yes, the error is of missing empty line and I only resolved that particular error in the first version
>> of this patch.
>>
>> But I was recommended to keep the conditional statement close to the line it is associated with
>> and to make changes in the code wherever similar format is followed.
>
>> So I followed the advise of Kieran Bingham and made changes accordingly.
>>
>> Below is the link of the full discussion : https://lore.kernel.org/lkml/MAZPR01MB695752E4ADB0110443EA695CF2432@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/
> Kieran said this:
>>> @@ -357,6 +357,7 @@ static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
>>> {
>>> struct adv7180_state *state = to_state(sd);
>>
>> Personally, I would keep the if (err) hugging the line it's associated
>> with.
>>
>>
>>> int err = mutex_lock_interruptible(&state->mutex);
>>> +
>>> if (err)
>>> return err;
>>>
> which I interpret as saying that he doesn't like adding the extra empty line.
>>
>>>> if (err)
>>>> return err;
>>>>
>>>> @@ -388,8 +391,9 @@ static int adv7180_s_routing(struct v4l2_subdev *sd, u32 input,
>>>> u32 output, u32 config)
>>>> {
>>>> struct adv7180_state *state = to_state(sd);
>>>> - int ret = mutex_lock_interruptible(&state->mutex);
>>>> + int ret;
>>>>
>>>> + ret = mutex_lock_interruptible(&state->mutex);
> I don't believe he meant doing this.
> In any case, none of this is worth the effort, just leave this driver as-is.
I appreciate your comments.
My intention is to make linux kernel source as per kernel code style. In this approach I found these warnings "missing a blank line after declarations" and made changes accordingly.
Also, there should be blank line after declaration of a variable, correct me here if I am wrong.
As per the suggestions of Kieran Bingham, he recommended to keep the if(err) hugging the line it's associated. So to adopt this change I made changes accordingly.
Regards,
Bhavin Sharma
