From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB9F9C43441 for ; Mon, 26 Nov 2018 08:21:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B3FF020672 for ; Mon, 26 Nov 2018 08:21:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B3FF020672 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726260AbeKZTOh (ORCPT ); Mon, 26 Nov 2018 14:14:37 -0500 Received: from mail.bootlin.com ([62.4.15.54]:43906 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726164AbeKZTOg (ORCPT ); Mon, 26 Nov 2018 14:14:36 -0500 Received: by mail.bootlin.com (Postfix, from userid 110) id 01C41207BF; Mon, 26 Nov 2018 09:21:13 +0100 (CET) Received: from aptenodytes (aaubervilliers-681-1-94-205.w90-88.abo.wanadoo.fr [90.88.35.205]) by mail.bootlin.com (Postfix) with ESMTPSA id A93802074D; Mon, 26 Nov 2018 09:21:03 +0100 (CET) Message-ID: <7adca9862d2dafdc7cac10c878ff314eb7bc0c03.camel@bootlin.com> Subject: Re: [PATCH] media: cedrus: Fix a NULL vs IS_ERR() check From: Paul Kocialkowski To: Dan Carpenter , Maxime Ripard Cc: Mauro Carvalho Chehab , Greg Kroah-Hartman , Chen-Yu Tsai , linux-media@vger.kernel.org, devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Date: Mon, 26 Nov 2018 09:21:03 +0100 In-Reply-To: <20181126081044.yz5tenssdbt7mugb@kili.mountain> References: <20181126081044.yz5tenssdbt7mugb@kili.mountain> Organization: Bootlin Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-PtdwHGxsjhmWJwQTQhiY" User-Agent: Evolution 3.30.2 Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-PtdwHGxsjhmWJwQTQhiY Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2018-11-26 at 11:10 +0300, Dan Carpenter wrote: > The devm_ioremap_resource() function doesn't return NULL pointers, it > returns error pointers. Good catch and thanks for the patch! > Fixes: 50e761516f2b ("media: platform: Add Cedrus VPU decoder driver") > Signed-off-by: Dan Carpenter Acked-by: Paul Kocialkowski Cheers, Paul > --- > drivers/staging/media/sunxi/cedrus/cedrus_hw.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) >=20 > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c b/drivers/sta= ging/media/sunxi/cedrus/cedrus_hw.c > index 32adbcbe6175..07520a2ce179 100644 > --- a/drivers/staging/media/sunxi/cedrus/cedrus_hw.c > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_hw.c > @@ -255,10 +255,10 @@ int cedrus_hw_probe(struct cedrus_dev *dev) > =20 > res =3D platform_get_resource(dev->pdev, IORESOURCE_MEM, 0); > dev->base =3D devm_ioremap_resource(dev->dev, res); > - if (!dev->base) { > + if (IS_ERR(dev->base)) { > v4l2_err(&dev->v4l2_dev, "Failed to map registers\n"); > =20 > - ret =3D -ENOMEM; > + ret =3D PTR_ERR(dev->base); > goto err_sram; > } > =20 --=20 Paul Kocialkowski, Bootlin (formerly Free Electrons) Embedded Linux and kernel engineering https://bootlin.com --=-PtdwHGxsjhmWJwQTQhiY Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEJZpWjZeIetVBefti3cLmz3+fv9EFAlv7rO8ACgkQ3cLmz3+f v9F82Qf+KVGghWjDZZyrlXhtDrg2T0YuUlJlhHx5uHsIuejxmba3TLVPB6KkslIE 8/s2FqS3sNTABNa+kz29H8OiC0dtNp/KNRuGY0K3VhjLJjK/CuWdwjarMMbrbI2A tectKYX9iFFWcsGMM2Z46Hswnw6ek3PH6mdTRBokdUVCEhFd56I1zuq0YN5D4oOV ESmtJ8FY/OrxXdwWkJIwcsbzsC+RohBdXcTL9f/LP1nvoI3DHWvZquDQaWppxgAI oA3gU7qUQkWSo7u14yK/Ea6qijGfCxS6MktR+utDl40cIyk2UyWhcZxFJ/4SXbwA EQkvMtBSAGNYc01yBgzLaz2BTI+lyg== =WaHe -----END PGP SIGNATURE----- --=-PtdwHGxsjhmWJwQTQhiY--