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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C9E2EA3C5D for ; Thu, 9 Apr 2026 13:12:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=eoicIB5AL1TH9DB4R0hDbkZPw9GfthP5tLII5ufZW0A=; b=FZl/YOFdIFpxQTIeQ9mM8ozQHV e75Sj+iuM1JuOi5h9q7AyRv3DRY+NL1lFYpYUMJgGTR8aKFYihR4xp8tAYjg+V1EU/+ZnZDnLtJB/ xu3MEqtDa50IvIsCV7GKGJtQZCfjYXQcxbqXAfqgi88TTyfIZLjkxGrCYYq4So/vDgO7w71fv/IVd Q8soyTvWn6jViVon//+KMaE9bOdwx7bhZu/eJlAqejwwRjuqNexRmKShQJDHlhuz/ILz7lb6gk9yL 19/a/6r50IBLAjDh1zSP8RVu63LCmWqPIGl0RwH6Ff1hg1wENB72537PYj0ZJl3kZ9Pjb2e8PuJjg 1rOkCAjQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wApAd-0000000ASHj-3hF0; Thu, 09 Apr 2026 13:11:52 +0000 Received: from leonov.paulk.fr ([185.233.101.22]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wAp9v-0000000ASDq-1yC7 for linux-arm-kernel@lists.infradead.org; Thu, 09 Apr 2026 13:11:42 +0000 Received: from laika.paulk.fr (12.234.24.109.rev.sfr.net [109.24.234.12]) by leonov.paulk.fr (Postfix) with ESMTPS id 4D4701F8004A for ; Thu, 9 Apr 2026 13:10:47 +0000 (UTC) Received: by laika.paulk.fr (Postfix, from userid 65534) id 59536B401A4; Thu, 9 Apr 2026 13:10:46 +0000 (UTC) Received: from shepard (unknown [192.168.1.1]) by laika.paulk.fr (Postfix) with ESMTPSA id 4DBC4B401A1; Thu, 9 Apr 2026 13:10:45 +0000 (UTC) Date: Thu, 9 Apr 2026 15:10:42 +0200 From: Paul Kocialkowski To: Andrey Skvortsov Cc: Dan Carpenter , Maxime Ripard , Mauro Carvalho Chehab , Greg Kroah-Hartman , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Hans Verkuil , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] media: cedrus: Fix failure to clean up hardware on probe failure Message-ID: References: <20260406221440.3721863-1-andrej.skvortzov@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="Itf9xyoJaakxzDN8" Content-Disposition: inline In-Reply-To: <20260406221440.3721863-1-andrej.skvortzov@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260409_061059_923613_9521BE8E X-CRM114-Status: GOOD ( 27.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --Itf9xyoJaakxzDN8 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Tue 07 Apr 26, 01:14, Andrey Skvortsov wrote: > From: Samuel Holland >=20 > If V4L2 device fails to register, then SRAM still be claimed and as a > result driver will not be able to probe again. >=20 > cedrus 1c0e000.video-codec: Failed to claim SRAM > cedrus 1c0e000.video-codec: Failed to probe hardware > cedrus 1c0e000.video-codec: probe with driver cedrus failed with error -= 16 >=20 > cedrus_hw_remove undoes everything that was previously done by > cedrus_hw_probe, such as disabling runtime power management and > releasing the claimed SRAM and reserved memory region. Good catch, thanks for the patch! Acked-by: Paul Kocialkowski Note that I (still) plan to rework the architecture of this driver in the future but such fixes are definitely welcome in the meantime. All the best, Paul > Signed-off-by: Samuel Holland > Signed-off-by: Andrey Skvortsov > Fixes: 50e761516f2b ("media: platform: Add Cedrus VPU decoder driver") > --- >=20 > Changes in v2: > - remove duplicate 'in-body' From: record > - add more technical details to commit message >=20 > drivers/staging/media/sunxi/cedrus/cedrus.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) >=20 > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/stagin= g/media/sunxi/cedrus/cedrus.c > index 1d2130f35fffc..ee0e286add67d 100644 > --- a/drivers/staging/media/sunxi/cedrus/cedrus.c > +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c > @@ -477,7 +477,7 @@ static int cedrus_probe(struct platform_device *pdev) > ret =3D v4l2_device_register(&pdev->dev, &dev->v4l2_dev); > if (ret) { > dev_err(&pdev->dev, "Failed to register V4L2 device\n"); > - return ret; > + goto err_hw; > } > =20 > vfd =3D &dev->vfd; > @@ -538,6 +538,8 @@ static int cedrus_probe(struct platform_device *pdev) > v4l2_m2m_release(dev->m2m_dev); > err_v4l2: > v4l2_device_unregister(&dev->v4l2_dev); > +err_hw: > + cedrus_hw_remove(dev); > =20 > return ret; > } > --=20 > 2.51.0 >=20 --=20 Paul Kocialkowski, Independent contractor - sys-base - https://www.sys-base.io/ Free software developer - https://www.paulk.fr/ Expert in multimedia, graphics and embedded hardware support with Linux. --Itf9xyoJaakxzDN8 Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEAbcMXZQMtj1fphLChP3B6o/ulQwFAmnXpVIACgkQhP3B6o/u lQxUvQ/+KnGDOZekoylgaxf6pnjfN26pBbZnr+cFKKJG68xgu6GWkXQzhOjkASXT W3P46lFZ2yzEu+RSy2vFORvHTWxwXTzskwwNPGWhgQxMHrdD/7WQN/VGkaH+ghVQ sih9knsZCokRVojSGcIhxUPaiKiNDocQGAZWTGIJeTbys8GANWU+jkAuxjihbsnO qO28kp9EQsqzyFCgpu/xtxC0QewsUKj/4jr66kVeysZYBLKAYU52orfvEb3o4kOk yZSDrzoNq5gCllSI4Odq0Hb7SSgnjOEnoUJNTdm492QhTrMAsABeqTvUFVUhW71b KQNqJ7Yo025qvWYt0IP2+NMsqhMvSlevf/sXatiN6pwoIpD1bflAvF+C6PG8dBia Qeu4AerVQmrM8wiokTAY9kaqA0VOdFTU/Bs+rzyLOOIzGFTC2Ykj8b8wQI7rtw/P NB/0IvumoLxCST1pzYUits2OE7Klo39X61Ie5zzvlfC7cpCYseIUV9NIvTR2SuSP TavZVrHW+aVrhPd0/fx/IMxp1L4Ut1cfx0C5pT4Ifi0vMwFt73g115PFm1gUBsrT E1uCGJf+P643l/l/3FlaYJph5LZ87mcOHAPX6LWDw4WtsECvJk5m0YThk9RIowQm naVGrtzZ3zISp7qAOFkJwpFFd1m8KGGe09FldmINLJ4n5W8jB4M= =Smsv -----END PGP SIGNATURE----- --Itf9xyoJaakxzDN8--