Re: [PATCH] staging: greybus: loopback: Fix Coding Style Error

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On Fri, Feb 18, 2022 at 10:22:28AM +0530, Ahamed Husni wrote:
> Hi Greg,
> On Fri, Feb 18, 2022 at 12:56 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> > Did you try to build this change?
> I am a newbie kernel dev and trying to understand how things work.
> I did not build this change by the time I sent you this, thinking this
> is just a style change.
> I should have tested the build. I am sorry.

You always have to build-test your changes, as you have found out.

> Now I built the changes by setting the following configurations.
> My change introduces the following error.
> ''''
> drivers/staging/greybus/loopback.c:166:2: error: expected identifier
> or ‘(’ before ‘do’
>   166 |  do {            \
>       |  ^~
> ''''
> I could not fix or find the reason for this error. Please guide me in
> this regard.

There is nothing wrong with the original code here.  Remember that
checkpatch is a perl script that gives good advice, but it is not always
correct.  You must always manually check it based on your knowledge of
the C language.

I recommend learning a bit more C before working on kernel code.

Best of luck!

greg k-h
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