From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by smtp.subspace.kernel.org (Postfix) with ESMTPS id DABDE3234
	for <linux-staging@lists.linux.dev>; Fri, 18 Feb 2022 07:10:47 +0000 (UTC)
Received: by smtp.kernel.org (Postfix) with ESMTPSA id F1C81C340E9;
	Fri, 18 Feb 2022 07:10:45 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org;
	s=korg; t=1645168247;
	bh=d+hIdbP4FcjzoABr76JeTKbmnhBBCfqZICtBBkTZUKQ=;
	h=Date:From:To:Cc:Subject:References:In-Reply-To:From;
	b=u+JysrmpF0/EDrB5xHfEaEQ6p9cdUqaBWI3XOenDKrL3YPKrprayM0DrAhAMyHm72
	 xhUPRFlZ0XpJ3ImhtOCNfALdfoGePbAZA7axG/E4Gk6OPilGgS6D60yTbsn++jGpZK
	 m37+jsURk0HWwEul1S4mfx94va1vtToF+WAZmr9s=
Date: Fri, 18 Feb 2022 08:10:40 +0100
From: Greg KH <gregkh@linuxfoundation.org>
To: Ahamed Husni <ahamedhusni73@gmail.com>
Cc: Bryan O'Donoghue <pure.logic@nexus-software.ie>, elder@kernel.org,
	greybus-dev@lists.linaro.org, linux-staging@lists.linux.dev,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] staging: greybus: loopback: Fix Coding Style Error
Message-ID: <Yg9GcPtAOeVtmTyg@kroah.com>
References: <20220217190722.44894-1-ahamedhusni73@gmail.com>
 <Yg6hcX6XK4Eu0KOR@kroah.com>
 <CAFjpAKqy908scQTRJPkMhEz8OyNiR3-N8XD2hiGa+VBLhUf0VA@mail.gmail.com>
Precedence: bulk
X-Mailing-List: linux-staging@lists.linux.dev
List-Id: <linux-staging.lists.linux.dev>
List-Subscribe: <mailto:linux-staging+subscribe@lists.linux.dev>
List-Unsubscribe: <mailto:linux-staging+unsubscribe@lists.linux.dev>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <CAFjpAKqy908scQTRJPkMhEz8OyNiR3-N8XD2hiGa+VBLhUf0VA@mail.gmail.com>

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@linuxfoundation.org> 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.
> CONFIG_GREYBUS
> CONFIG_STAGING
> CONFIG_GREYBUS_LOOPBACK
> 
> 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