From nobody Fri Sep 12 18:12:23 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 371C3C05027 for ; Wed, 8 Feb 2023 11:15:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229745AbjBHLOn (ORCPT ); Wed, 8 Feb 2023 06:14:43 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230196AbjBHLOG (ORCPT ); Wed, 8 Feb 2023 06:14:06 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 741E2241C2 for ; Wed, 8 Feb 2023 03:14:05 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 27EE7B81D46 for ; Wed, 8 Feb 2023 11:14:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7346EC433EF; Wed, 8 Feb 2023 11:14:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1675854842; bh=1mImGWOl1u7F0otEn6f4kIHAWLUXjPlgHYU4EGCoXk4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IK3TH3L/y3D6Bypj4TmyeSsp8/1KrmEHy0kKEtTBKkTgWIxoNUBpEtk7TsJrYGhP0 nQCmLmrBDHFWBUBDgav6gYDapZ+cCRtL2rJuiuozRd/6J83Njax7DAF/zk3dwDm7Cp YNlpAn0X0946xSruNtVVWOVE5e/fX8asQHVrS70s= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" Subject: [PATCH 15/21] driver core: bus: clean up driver_find() Date: Wed, 8 Feb 2023 12:13:24 +0100 Message-Id: <20230208111330.439504-16-gregkh@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230208111330.439504-1-gregkh@linuxfoundation.org> References: <20230208111330.439504-1-gregkh@linuxfoundation.org> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1264; i=gregkh@linuxfoundation.org; h=from:subject; bh=1mImGWOl1u7F0otEn6f4kIHAWLUXjPlgHYU4EGCoXk4=; b=owGbwMvMwCRo6H6F97bub03G02pJDMmPm28I/ymI6ltkJLEx7u3c+92Bj1sDNNXEA9Q9tlS7NKiF H97TEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABOpeMuw4ESlRujkNddVvqWt03ny8J vP5vCiLwwLdtQftP1w+PzsGdy+bb+Np259xfYnAQA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Convert the driver_find() function to use bus_to_subsys() and not use the back-pointer to the private structure. Cc: "Rafael J. Wysocki" Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 727de4c36d59..951d63c8e885 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -1302,16 +1302,23 @@ EXPORT_SYMBOL_GPL(subsys_virtual_register); */ struct device_driver *driver_find(const char *name, struct bus_type *bus) { - struct kobject *k =3D kset_find_obj(bus->p->drivers_kset, name); + struct subsys_private *sp =3D bus_to_subsys(bus); + struct kobject *k; struct driver_private *priv; =20 - if (k) { - /* Drop reference added by kset_find_obj() */ - kobject_put(k); - priv =3D to_driver(k); - return priv->driver; - } - return NULL; + if (!sp) + return NULL; + + k =3D kset_find_obj(sp->drivers_kset, name); + subsys_put(sp); + if (!k) + return NULL; + + priv =3D to_driver(k); + + /* Drop reference added by kset_find_obj() */ + kobject_put(k); + return priv->driver; } EXPORT_SYMBOL_GPL(driver_find); =20 --=20 2.39.1