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 DA5F622172C; Thu, 21 Aug 2025 21:30:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755811856; cv=none; b=s0VsfRIjDCOY9SSjlkpK6ff8nVJDr/AU6M4B5Js4BL9F7cNWKnWLRMUas6VI7yBRfzSHIm1c0A6dGKGiF6gpiLrwIul4YrTlF3Yh4N4i+g1lfQDBZR5TFwaF5zg/v6BVNglMxcFG5vsnMjhRbEmXmPPbBcMC6zLK9gtat8yFUgU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755811856; c=relaxed/simple; bh=/ty/vVkt74iKPXOsP7kI5bxNFsiih+atHcD6arkGgaA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BYUCP+Fb1gzul0+/cmLnbsFVd9u7Y6CsF0wN/gaZYge6bBkjQf0rQuXELiqHjmtqt7gA1BYVFMqspyhDEjaItbWUCMHnFzkbt7CRLfWf15Qtib8tfyafloNS6Rp/qUgHdvIPcj22YcNFukgPrlw+/00TH/eJ8ocy+RqqKEks5xs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LW9mUdlD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LW9mUdlD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FC2AC4CEEB; Thu, 21 Aug 2025 21:30:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755811855; bh=/ty/vVkt74iKPXOsP7kI5bxNFsiih+atHcD6arkGgaA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LW9mUdlDSGZ+grjKxbSX+AifJztORJQOb1dSeDbgHwiwmQZNgdGl5UHApou6TLyQ/ FvpG+3V9fQxQ9Kg6rkc8EssNSNWz2GXdmwiqS7oT7vf/lO+0PZJoM7iiBlFDDYffMC vSLssyLMUr6hA92WxQwpM+P0a/lamHbRXvbiDSbO3+l1BAEQDtl8UhdIMQHhLqHMS8 DUH3juTT7zbBRixz0rsprBs/UNsFmXyA6TYQ57HPmYQ/0Uft5Pz10zdO58Dvro8sR/ lHSitmXV0Eh7BkhJWEprfSOwqAG6KgGtgbfTT8wGKoNiBquFvVtGUuLZr0plL98/Vf 6PEyCVfjLtC8Q== Date: Thu, 21 Aug 2025 22:30:50 +0100 From: Mark Brown To: Nikola Ivanov Cc: perex@perex.cz, tiwai@suse.com, shuah@kernel.org, linux-sound@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org Subject: Re: [PATCH] selftests/alsa: remove 0/NULL global variable assignment Message-ID: References: <20250821200132.1218850-1-zlatistiv@gmail.com> <9c310ab7-0f0b-412f-8df7-71730a2d2caa@sirena.org.uk> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="wXnrCk0mND4j2nmE" Content-Disposition: inline In-Reply-To: X-Cookie: Warp 7 -- It's a law we can live with. --wXnrCk0mND4j2nmE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Aug 22, 2025 at 12:17:14AM +0300, Nikola Ivanov wrote: > On Thu, Aug 21, 2025 at 09:49:29PM +0100, Mark Brown wrote: > > > -int num_cards = 0; > > > -int num_controls = 0; > > > -struct card_data *card_list = NULL; > > > -struct ctl_data *ctl_list = NULL; > > > +int num_cards; > > > +int num_controls; > > > +struct card_data *card_list; > > > +struct ctl_data *ctl_list; > > Nothing now sets initial values for these variables so they all have > > undefined values which is buggy. The code is relying on the default > > values. > Checkpatch reports it as an error, it looks to be part of the C > standard that all compilers must initialize globals to 0. > Though I suppose it helps with readability to see > the num_ counters assigned 0. Do you have a reference there, note that these are just plain non-static variables? I wouldn't trust checkpatch for anything that isn't kernel code (and even there it's got issues). --wXnrCk0mND4j2nmE Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAminkAoACgkQJNaLcl1U h9Ch0Qf7BQo2dqPlUT7IzMvCZC9WzUrMkweHu+WVhf8d5Zkyb0EIaj1SuQqcxCxN 030Alv6gWo+vWae3AOV+uRCfZ23AC4sATuUdHXTP2rq2pD5rWGhOOw04GcItAgnU I2Hso7PI/VvVh83VeGfR/rtgJc1+EcVzkOUnCz1Zbmy8rxDJlhxRiWZr9wb+OaZQ uEbP247E29lUdKuG1enVqcxAy6qedKa+zfjwuFPs9M1Jsr2vMkyLyiOBcQFwpYDo OhF//Lb5chZrQszhr1RYuF5nEjuJYueKumw7IqxZkUwDToUxSPa0c9gBtCDCrsPl JnwKwwjDjBV0EC+n94ryHvctoFxXvQ== =qDLL -----END PGP SIGNATURE----- --wXnrCk0mND4j2nmE--