From patchwork Wed Aug 26 06:24:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 257847 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D21EC433E1 for ; Wed, 26 Aug 2020 06:55:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0B2F42083B for ; Wed, 26 Aug 2020 06:55:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="LF7DOkQ3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726818AbgHZGzd (ORCPT ); Wed, 26 Aug 2020 02:55:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726040AbgHZGzc (ORCPT ); Wed, 26 Aug 2020 02:55:32 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B555C061574; Tue, 25 Aug 2020 23:55:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=34hr4y/kC5XT7kH5TAn/CeLpg6Bsmo1oeMdH990fres=; b=LF7DOkQ3G2kCDU78sX7HAD45tz wgLHVNfL9PsBnR63Gfu140LkwYAxCtOkfYnnCJYHga+N1T4iaMc11QuZcWzYyE3+AlNVAIFfxHePo oFuJ7mSFhDm4ddt3M8KwOjZmx17DnPwrvndMEZRuu78xzYcSe5saVNjYmS5ypiaz4+AyQ0EORlNkC UIRf4sZAkWzXiI7UMNADoAR4nqgIsmK9meeqetG5cugExwMKkn37O5cngvhDBmwp58yWSe7Eit8ud 8EAdshk3+VvyLbBQl5kgQmRM6TRVeKdDAVh6T1IvTYoxKmrpUM5sZKFdat0YL+ZL1yqx594tLcHZa Z0KP8Qsw==; Received: from 213-225-6-196.nat.highway.a1.net ([213.225.6.196] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kApL9-0003Wc-K5; Wed, 26 Aug 2020 06:55:23 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Denis Efremov , "David S. Miller" , Song Liu , Al Viro , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-raid@vger.kernel.org, linux-scsi@vger.kernel.org, linux-m68k@lists.linux-m68k.org Subject: [PATCH 13/19] ide: switch to __register_blkdev for command set probing Date: Wed, 26 Aug 2020 08:24:40 +0200 Message-Id: <20200826062446.31860-14-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200826062446.31860-1-hch@lst.de> References: <20200826062446.31860-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org ide is the last user of the blk_register_region framework except for the tracking of allocated gendisk. Switch to __register_blkdev, even if that doesn't allow us to trivially find out which command set to probe for. That means we now always request all modules when a user tries to access an unclaimed ide device node, but except for a few potentially loaded modules for a fringe use case of a deprecated and soon to be removed driver that doesn't make a difference. Signed-off-by: Christoph Hellwig --- drivers/ide/ide-probe.c | 34 ++++++---------------------------- 1 file changed, 6 insertions(+), 28 deletions(-) diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 076d34b381720f..1c1567bb519429 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -902,31 +902,12 @@ static int init_irq (ide_hwif_t *hwif) return 1; } -static int ata_lock(dev_t dev, void *data) +static void ata_probe(dev_t dev) { - /* FIXME: we want to pin hwif down */ - return 0; -} - -static struct kobject *ata_probe(dev_t dev, int *part, void *data) -{ - ide_hwif_t *hwif = data; - int unit = *part >> PARTN_BITS; - ide_drive_t *drive = hwif->devices[unit]; - - if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) - return NULL; - - if (drive->media == ide_disk) - request_module("ide-disk"); - if (drive->media == ide_cdrom || drive->media == ide_optical) - request_module("ide-cd"); - if (drive->media == ide_tape) - request_module("ide-tape"); - if (drive->media == ide_floppy) - request_module("ide-floppy"); - - return NULL; + request_module("ide-disk"); + request_module("ide-cd"); + request_module("ide-tape"); + request_module("ide-floppy"); } void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) @@ -967,7 +948,7 @@ static int hwif_init(ide_hwif_t *hwif) return 0; } - if (register_blkdev(hwif->major, hwif->name)) + if (__register_blkdev(hwif->major, hwif->name, ata_probe)) return 0; if (!hwif->sg_max_nents) @@ -989,8 +970,6 @@ static int hwif_init(ide_hwif_t *hwif) goto out; } - blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, - THIS_MODULE, ata_probe, ata_lock, hwif); return 1; out: @@ -1582,7 +1561,6 @@ static void ide_unregister(ide_hwif_t *hwif) /* * Remove us from the kernel's knowledge */ - blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<sg_table); unregister_blkdev(hwif->major, hwif->name);