linux-kernel - Re: [PATCH v2 1/2] usb: serial: Fix Space Prohibited Coding Style Errors

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Date:   Mon, 21 Feb 2022 10:37:26 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Husni Faiz <ahamedhusni73@...il.com>
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] usb: serial: Fix Space Prohibited Coding Style
 Errors

On Sun, Feb 20, 2022 at 06:43:39PM +0530, Husni Faiz wrote:
> This patch fixes "space prohibited before that ','"  checkpatch error.
> Removed the space after the function argument value "8".
> 
> Signed-off-by: Husni Faiz <ahamedhusni73@...il.com>
> ---
> V1->V2 : Separated the style changes into multiple patches.

As Greg mentioned, please work in drivers/staging if you want to submit
these kind of patches.

checkpatch.pl is great for checking your own patches before submission,
but it shouldn't be run on code that's already in the tree, and where
fixing a white space issue like this one has essentially no value.

And as your staging/greybus submission showed, using the output of tools
like checkpatch.pl even risks breaking things if you take it too
literally and don't use your own judgement.

>  drivers/usb/serial/iuu_phoenix.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
> index 0be3b5e1eaf3..2f7784572c4d 100644
> --- a/drivers/usb/serial/iuu_phoenix.c
> +++ b/drivers/usb/serial/iuu_phoenix.c
> @@ -360,7 +360,7 @@ static void iuu_led_activity_on(struct urb *urb)
>  	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
>  			  usb_sndbulkpipe(port->serial->dev,
>  					  port->bulk_out_endpointAddress),
> -			  port->write_urb->transfer_buffer, 8 ,
> +			  port->write_urb->transfer_buffer, 8,
>  			  iuu_rxcmd, port);
>  	usb_submit_urb(port->write_urb, GFP_ATOMIC);
>  }
> @@ -380,7 +380,7 @@ static void iuu_led_activity_off(struct urb *urb)
>  	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
>  			  usb_sndbulkpipe(port->serial->dev,
>  					  port->bulk_out_endpointAddress),
> -			  port->write_urb->transfer_buffer, 8 ,
> +			  port->write_urb->transfer_buffer, 8,
>  			  iuu_rxcmd, port);
>  	usb_submit_urb(port->write_urb, GFP_ATOMIC);
>  }

Johan