From patchwork Thu Feb 16 01:14:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 57788 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp39334wrn; Wed, 15 Feb 2023 17:31:50 -0800 (PST) X-Google-Smtp-Source: AK7set8u9uE5jOUOiImccZbgc/jSsnLNzMzrOa1mc8ZJXUdVvO9nK64i0W4i3lJTwb2Mcp4MmlYX X-Received: by 2002:a17:906:28da:b0:8b1:3a18:9daf with SMTP id p26-20020a17090628da00b008b13a189dafmr4114557ejd.74.1676511109995; Wed, 15 Feb 2023 17:31:49 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676511109; cv=none; d=google.com; s=arc-20160816; b=zgIGssBWTa/nGZaFgKb+VJXU0hc8Wp8kpkOpWBlSrbbLvL/ga53KqCfEdgxl2oxsDJ Xp1mZoixNSP7cauS+pEDx6RvoHKYari+wU7IEUz1Km2CHEZWdP6+QIvSkbjpnNBrQfvu yhIT1EG0LcbdLvtXJJFIyXQJBDz/IPAb6Su6NnjzitAWMVSzcZlbqfN2oLmOn0d8MDhc lFOTvUwb+9n6qfA5pTmR/ei9sm6PW0tPFD0MHUZeURnsW8PbcWnd5/IjCk/x0tFFnJxx A8wYX4fz/oOSYGE4BSA7YcmfZpDmYkU/oGLevqavw00MFruZB9Ek9AS3ZBPNWqFMwbQk djqw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:message-id:content-transfer-encoding :mime-version:subject:date:dkim-signature:from; bh=u/KmjUFXZTTXCQwxFJsk8tZh4fKd8TSt1k/K0suYQnA=; b=RSUkZKI5WOwN2Qx5Jo2CvEXkAcWqARfffZ5N+U9CyQu9504JO8wgsP12rhZyRDeyKA hqiDgp9DuawAR8Y/XNUGLnTMxb2xuKLiLHIutwijWrDF+8wOAYZyXx7iNTE/R/54xN5l T9jTdqM0TTW3J6MF+tPAKLPPxrIBrjy0FdwTcoSk5T7xj5s1+3ybbO4yeKjplrFp9EjB vwLLELbhJJg1iVb6xJws+8uBrNgJ5SJ/A9rGH+gxeQtFZEBthhQuMnX+Meofze1liaXf gU0g1AjqElMly7duVEKvoFehAaymG6vBQylx3Ih2SglogcRGRAvie63OcOCCdWnwJEFB WxDw== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@weissschuh.net header.s=mail header.b=iyYb3idp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id m5-20020a50ef05000000b004acbf527b16si527386eds.22.2023.02.15.17.31.25; Wed, 15 Feb 2023 17:31:49 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=fail header.i=@weissschuh.net header.s=mail header.b=iyYb3idp; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229681AbjBPBON (ORCPT + 99 others); Wed, 15 Feb 2023 20:14:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229651AbjBPBOL (ORCPT ); Wed, 15 Feb 2023 20:14:11 -0500 Received: from todd.t-8ch.de (todd.t-8ch.de [IPv6:2a01:4f8:c010:41de::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 441483C2BF; Wed, 15 Feb 2023 17:14:10 -0800 (PST) From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=weissschuh.net; s=mail; t=1676510048; bh=UR4vbRpjhoZfLc+MuBzlPXgF1uQAu6tpAvHYcRD8A1Q=; h=From:Date:Subject:To:Cc:From; b=iyYb3idp+As89CUlExHZ3mu8uPoPO7RGrXeni/3AEYmdR7ig965KPb7CGhXqWO1jF 3rxonGsdI5wVc9OhpoG6+bW6DXgnoq33CVUyMaya6ihnNE1eIX+UKUo50M0nmYMt5n lfPttNKtu/Sd36k1fmoP485BI5Q23i8zSLq3gsco= Date: Thu, 16 Feb 2023 01:14:06 +0000 Subject: [PATCH] chardev: make kobj_type structures constant MIME-Version: 1.0 Message-Id: <20230216-kobj_type-chardev-v1-1-94e213b73e85@weissschuh.net> X-B4-Tracking: v=1; b=H4sIAF2D7WMC/x2N0QqCQBBFf0XmuYF1C6l+JSJ23WtOySqzJYr47 w09nnM53I0KVFDoWm2kmKXImA3qQ0VtH/ITLMmYvPNH5+uG32N8PT7rBLZdE2buXDqfcGkiPMi 6GAo4ashtb2X+DoPJSdHJ8j+63ff9B1lCcQl4AAAA To: Alexander Viro Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?T?= =?utf-8?q?homas_Wei=C3=9Fschuh?= X-Mailer: b4 0.12.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1676510046; l=1082; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=UR4vbRpjhoZfLc+MuBzlPXgF1uQAu6tpAvHYcRD8A1Q=; b=8GAC7gGXwSeDxPLUuXlTzzPKDXM0MmNqYTSid6lYULq4FC6fzQV+Vi4TrhiCxTAX1nZLoc0UO XOHl9K/yhP4Ahma+SFr/YbdySPVM/bGcOeQ/p2OQbESiLZpNPezahNv X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1757949313553541220?= X-GMAIL-MSGID: =?utf-8?q?1757949313553541220?= Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.") the driver core allows the usage of const struct kobj_type. Take advantage of this to constify the structure definitions to prevent modification at runtime. Signed-off-by: Thomas Weißschuh --- fs/char_dev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- base-commit: 033c40a89f55525139fd5b6342281b09b97d05bf change-id: 20230216-kobj_type-chardev-f0d84e96be2e Best regards, diff --git a/fs/char_dev.c b/fs/char_dev.c index 13deb45f1ec6..b33331cb97cd 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -624,11 +624,11 @@ static void cdev_dynamic_release(struct kobject *kobj) kobject_put(parent); } -static struct kobj_type ktype_cdev_default = { +static const struct kobj_type ktype_cdev_default = { .release = cdev_default_release, }; -static struct kobj_type ktype_cdev_dynamic = { +static const struct kobj_type ktype_cdev_dynamic = { .release = cdev_dynamic_release, };