From patchwork Sun Mar 24 16:12:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 13600862 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 55CAA18659 for ; Sun, 24 Mar 2024 16:12:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711296763; cv=none; b=G1U47hMDfsdVXhlm9Arb7EWohaXGnDpLNmW/2dnqdbdK4ih+3f3BkQc4VyDuIm7S7gT+KEyh3+Ac/yuvGoWDm/5FCL2K794ads4TRoYk4aNsS003BBJColYYVQSFb6BFJzQpAmf5xNpnBhcjqpliexRmRTAFbZeXHCYLF2m1+0c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711296763; c=relaxed/simple; bh=zbkEwfF5XQTLA9liaCLXZUMnOSsMSZXLUe2tGPyJB50=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ovXpB9WPGICXTJF0mf4RLeDh1cSMwrrvfPY6caZQmOkT65ff+k3ZOklallklGGgFQZDoBLnopHJMblSpaVdaHIkGMqH1U+fWioVjz0X+cc5BJ/rwtfzreF1KefOAqi7kt712jan7qRliKnBMAIFOIhuchK+9V+umqsPc6pLor0Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1roQSY-0000c3-PB; Sun, 24 Mar 2024 17:12:34 +0100 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1roQSW-008Fq5-Mo; Sun, 24 Mar 2024 17:12:32 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1roQSW-00AT6p-21; Sun, 24 Mar 2024 17:12:32 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Olivia Mackall , Herbert Xu Cc: linux-crypto@vger.kernel.org, kernel@pengutronix.de, linux-kbuild@vger.kernel.org Subject: [PATCH v2] hwrng: mxc-rnga: Drop usage of platform_driver_probe() Date: Sun, 24 Mar 2024 17:12:26 +0100 Message-ID: <20240324161227.239718-2-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2289; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=zbkEwfF5XQTLA9liaCLXZUMnOSsMSZXLUe2tGPyJB50=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBmAFDrL4GkQ1S58miTfSLNkPs7rx8eHVWFk045g tOTVnuUghuJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZgBQ6wAKCRCPgPtYfRL+ TqBTB/sFdbZbF2ZZ8cAouSVwVgAdNK2Qquq8h1b/P7bo753XD9k6mOd5/85x7APNecfNNg9jzo5 JlhAkHg/kuBcLKQun+fUeEYxhU9yh9GvrTcvUE6gja0tPdDdQcJYqyd9TEpPjqbwpqRVyggNNvN 7VPIaoInV5vJJbvOaZbFFG3PLnIdLNbDK4KlgZddmPG6rc4JBC9WDp2sixRMN1fUF5w6lfqydJ0 jMJ5Z+mqrPscFdndO6giFqpluEIIegoprXh3s5fnBXXmsE9Gl6B2hKy+wMy5QvQW7tDvzHVSlAG FZ5X+PHAVwBu9MwNc0ifBnJwRofGV6ZhVbt6si8HSWmrN0zD X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kbuild@vger.kernel.org There are considerations to drop platform_driver_probe() as a concept that isn't relevant any more today. It comes with an added complexity that makes many users hold it wrong. (E.g. this driver should have mark the driver struct with __refdata.) Convert the driver to the more usual module_platform_driver(). This fixes a W=1 build warning: WARNING: modpost: drivers/char/hw_random/mxc-rnga: section mismatch in reference: mxc_rnga_driver+0x10 (section: .data) -> mxc_rnga_remove (section: .exit.text) with CONFIG_HW_RANDOM_MXC_RNGA=m. Signed-off-by: Uwe Kleine-König --- Hello, while I indeed fixed the mentioned warning in (implicit) v1, I introduced another one because I failed to drop __init from mxc_rnga_probe. :-\ This is fixed here. Best regards Uwe drivers/char/hw_random/mxc-rnga.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) base-commit: 70293240c5ce675a67bfc48f419b093023b862b3 diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c index 07ec000e4cd7..94ee18a1120a 100644 --- a/drivers/char/hw_random/mxc-rnga.c +++ b/drivers/char/hw_random/mxc-rnga.c @@ -131,7 +131,7 @@ static void mxc_rnga_cleanup(struct hwrng *rng) __raw_writel(ctrl & ~RNGA_CONTROL_GO, mxc_rng->mem + RNGA_CONTROL); } -static int __init mxc_rnga_probe(struct platform_device *pdev) +static int mxc_rnga_probe(struct platform_device *pdev) { int err; struct mxc_rng *mxc_rng; @@ -176,7 +176,7 @@ static int __init mxc_rnga_probe(struct platform_device *pdev) return err; } -static void __exit mxc_rnga_remove(struct platform_device *pdev) +static void mxc_rnga_remove(struct platform_device *pdev) { struct mxc_rng *mxc_rng = platform_get_drvdata(pdev); @@ -197,10 +197,11 @@ static struct platform_driver mxc_rnga_driver = { .name = "mxc_rnga", .of_match_table = mxc_rnga_of_match, }, - .remove_new = __exit_p(mxc_rnga_remove), + .probe = mxc_rnga_probe, + .remove_new = mxc_rnga_remove, }; -module_platform_driver_probe(mxc_rnga_driver, mxc_rnga_probe); +module_platform_driver(mxc_rnga_driver); MODULE_AUTHOR("Freescale Semiconductor, Inc."); MODULE_DESCRIPTION("H/W RNGA driver for i.MX");