From nobody Tue Apr 16 22:56:09 2024 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 D1512C7618A for ; Sun, 19 Mar 2023 04:20:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229961AbjCSEUj (ORCPT ); Sun, 19 Mar 2023 00:20:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229593AbjCSEUh (ORCPT ); Sun, 19 Mar 2023 00:20:37 -0400 Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 783D9222CC; Sat, 18 Mar 2023 21:20:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=IP8Op 5NYAZpLD4TuJdEpRPmgpBXAldqWHpEXpQ6dDHs=; b=ODawpGsdlI2arK2+moZRm GWo/R8/X7bIPTDnsTdcVzOIhHWExIgOknlYc6+8REYoAWuSkNGqkVLardOn5M0N1 z6umcmRbRDpD5qZ1fjlO9CXZ7SFADW6Cv7XZznYZGgaZPWp8+tstT+b9CI0F4ubW o2Mk0o/J0dyQLYJXlwpA1U= Received: from lizhe.. (unknown [120.245.132.192]) by zwqz-smtp-mta-g3-4 (Coremail) with SMTP id _____wCHx69ejRZkU1WuAQ--.31804S4; Sun, 19 Mar 2023 12:20:18 +0800 (CST) From: Lizhe To: akrowiak@linux.ibm.com, pasic@linux.ibm.com, jjherne@linux.ibm.com, freude@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Lizhe Subject: [PATCH v1] s390/vfio-ap-drv: Remove redundant driver match function Date: Sun, 19 Mar 2023 12:19:41 +0800 Message-Id: <20230319041941.259830-1-sensor1010@163.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wCHx69ejRZkU1WuAQ--.31804S4 X-Coremail-Antispam: 1Uf129KBjvdXoW7Jr4UtFy8tF15GF4UXr4DXFb_yoWDXrX_C3 y8Xrn7Wr1j9w1fta48XrW7Z3sF9w4kXFZagrsYq3sag3W7Jr1DuFZF9rnrW34jqrW7Aa9x W3yUJr40yr12gjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7xRKSdyUUUUUU== X-Originating-IP: [120.245.132.192] X-CM-SenderInfo: 5vhq20jurqiii6rwjhhfrp/xtbBogk3q1aEHrmpOgAAsR Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches, see driver_match_device(). Drop the matrix bus's match function that always returned 1 and so=20 implements the same behaviour as when there is no match function Signed-off-by: Lizhe Reviewed-by: Tony Krowiak --- drivers/s390/crypto/vfio_ap_drv.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_a= p_drv.c index 997b524bdd2b..9341c000da41 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -59,14 +59,8 @@ static void vfio_ap_matrix_dev_release(struct device *de= v) kfree(matrix_dev); } =20 -static int matrix_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static struct bus_type matrix_bus =3D { .name =3D "matrix", - .match =3D &matrix_bus_match, }; =20 static struct device_driver matrix_driver =3D { --=20 2.34.1