From patchwork Fri May 6 04:59:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhe X-Patchwork-Id: 570419 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 2D2E0C433EF for ; Fri, 6 May 2022 05:04:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1389052AbiEFFHw (ORCPT ); Fri, 6 May 2022 01:07:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237609AbiEFFHu (ORCPT ); Fri, 6 May 2022 01:07:50 -0400 Received: from m12-13.163.com (m12-13.163.com [220.181.12.13]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DFF7755488; Thu, 5 May 2022 22:04:05 -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=kwrkS yRsaaiIFWrW7YZm2UrkeSJmomCa4/Kxdbxbyiw=; b=ONspd4qIXmW6V4d+1OMMb 6vS4HvdMVbYN2c8XrxUoThFprjnJYB00mmBTz7aIxkx/pDHV9FpV1Tc3i5Arra4/ YjOzqoo3Za+II1DevMBNWk8AWFJh3qq/Glre9ahoThdnjw03jdK7jh7hjfmoHt+3 x1JZkQr4IbZUWwkE0Cb148= Received: from localhost.localdomain (unknown [120.204.77.149]) by smtp9 (Coremail) with SMTP id DcCowAD31eJMq3Rijn0EBQ--.64477S4; Fri, 06 May 2022 13:00:36 +0800 (CST) From: lizhe To: lee.jones@linaro.org, fthain@linux-m68k.org, 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, jejb@linux.ibm.com, martin.petersen@oracle.com, zbr@ioremap.net, perex@perex.cz, tiwai@suse.com, bvanassche@acm.org, dan.j.williams@intel.com, srinivas.kandagatla@linaro.org, wens@csie.org, colin.king@intel.com, u.kleine-koenig@pengutronix.de, hare@suse.de, sensor1010@163.com Cc: linux-kernel@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, alsa-devel@alsa-project.org Subject: [PATCH] kernel/drivers: Remove redundant driver match function Date: Thu, 5 May 2022 21:59:52 -0700 Message-Id: <20220506045952.136290-1-sensor1010@163.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: DcCowAD31eJMq3Rijn0EBQ--.64477S4 X-Coremail-Antispam: 1Uf129KBjvJXoWxKr13CF47Kr1rJF13uw13CFg_yoW7Ww4xpF s5JFWakrWUtanrWws2yrWkAFyak3Z7G347Kr4xW3sY9FnrAry5Xa4rtFy8ArZ8XFW8G3ZF van5try8CF4rJrUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0ziAuc_UUUUU= X-Originating-IP: [120.204.77.149] X-CM-SenderInfo: 5vhq20jurqiii6rwjhhfrp/xtbBohT4q1aEENxxpgAAss Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches, see driver_match_device(). Signed-off-by: lizhe Acked-by: Finn Thain Reviewed-by: Tony Krowiak --- drivers/mfd/mcp-core.c | 6 ------ drivers/nubus/bus.c | 6 ------ drivers/s390/crypto/vfio_ap_drv.c | 6 ------ drivers/scsi/scsi_debug.c | 7 ------- drivers/target/loopback/tcm_loop.c | 7 ------- drivers/w1/w1.c | 6 ------ sound/ac97_bus.c | 11 ----------- 7 files changed, 49 deletions(-) diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c index 2fa592c37c6f..281a9369f2b3 100644 --- a/drivers/mfd/mcp-core.c +++ b/drivers/mfd/mcp-core.c @@ -20,11 +20,6 @@ #define to_mcp(d) container_of(d, struct mcp, attached_device) #define to_mcp_driver(d) container_of(d, struct mcp_driver, drv) -static int mcp_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static int mcp_bus_probe(struct device *dev) { struct mcp *mcp = to_mcp(dev); @@ -43,7 +38,6 @@ static void mcp_bus_remove(struct device *dev) static struct bus_type mcp_bus_type = { .name = "mcp", - .match = mcp_bus_match, .probe = mcp_bus_probe, .remove = mcp_bus_remove, }; diff --git a/drivers/nubus/bus.c b/drivers/nubus/bus.c index 17fad660032c..72921e4f35f6 100644 --- a/drivers/nubus/bus.c +++ b/drivers/nubus/bus.c @@ -14,11 +14,6 @@ #define to_nubus_board(d) container_of(d, struct nubus_board, dev) #define to_nubus_driver(d) container_of(d, struct nubus_driver, driver) -static int nubus_bus_match(struct device *dev, struct device_driver *driver) -{ - return 1; -} - static int nubus_device_probe(struct device *dev) { struct nubus_driver *ndrv = to_nubus_driver(dev->driver); @@ -39,7 +34,6 @@ static void nubus_device_remove(struct device *dev) struct bus_type nubus_bus_type = { .name = "nubus", - .match = nubus_bus_match, .probe = nubus_device_probe, .remove = nubus_device_remove, }; diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c index 29ebd54f8919..0a662c451f2a 100644 --- a/drivers/s390/crypto/vfio_ap_drv.c +++ b/drivers/s390/crypto/vfio_ap_drv.c @@ -172,14 +172,8 @@ static void vfio_ap_matrix_dev_release(struct device *dev) kfree(matrix_dev); } -static int matrix_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static struct bus_type matrix_bus = { .name = "matrix", - .match = &matrix_bus_match, }; static struct device_driver matrix_driver = { diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 592a290e6cfa..8107489b36e8 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -7844,15 +7844,8 @@ static void sdebug_driver_remove(struct device *dev) scsi_host_put(sdbg_host->shost); } -static int pseudo_lld_bus_match(struct device *dev, - struct device_driver *dev_driver) -{ - return 1; -} - static struct bus_type pseudo_lld_bus = { .name = "pseudo", - .match = pseudo_lld_bus_match, .probe = sdebug_driver_probe, .remove = sdebug_driver_remove, .drv_groups = sdebug_drv_groups, diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 4407b56aa6d1..eeb63deff94f 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -83,15 +83,8 @@ static int tcm_loop_show_info(struct seq_file *m, struct Scsi_Host *host) static int tcm_loop_driver_probe(struct device *); static void tcm_loop_driver_remove(struct device *); -static int pseudo_lld_bus_match(struct device *dev, - struct device_driver *dev_driver) -{ - return 1; -} - static struct bus_type tcm_loop_lld_bus = { .name = "tcm_loop_bus", - .match = pseudo_lld_bus_match, .probe = tcm_loop_driver_probe, .remove = tcm_loop_driver_remove, }; diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index f2ae2e563dc5..a6ecfa1b3417 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -58,11 +58,6 @@ MODULE_PARM_DESC(slave_ttl, DEFINE_MUTEX(w1_mlock); LIST_HEAD(w1_masters); -static int w1_master_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - static int w1_master_probe(struct device *dev) { return -ENODEV; @@ -174,7 +169,6 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env); static struct bus_type w1_bus_type = { .name = "w1", - .match = w1_master_match, .uevent = w1_uevent, }; diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c index b4685c53ff11..c7aee8c42c55 100644 --- a/sound/ac97_bus.c +++ b/sound/ac97_bus.c @@ -75,19 +75,8 @@ int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id, } EXPORT_SYMBOL_GPL(snd_ac97_reset); -/* - * Let drivers decide whether they want to support given codec from their - * probe method. Drivers have direct access to the struct snd_ac97 - * structure and may decide based on the id field amongst other things. - */ -static int ac97_bus_match(struct device *dev, struct device_driver *drv) -{ - return 1; -} - struct bus_type ac97_bus_type = { .name = "ac97", - .match = ac97_bus_match, }; static int __init ac97_bus_init(void)