From patchwork Wed Jun 5 19:08:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10977599 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F8AE13AD for ; Wed, 5 Jun 2019 19:10:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 14F3E27C05 for ; Wed, 5 Jun 2019 19:10:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 092BD27CF3; Wed, 5 Jun 2019 19:10:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB5941FF62 for ; Wed, 5 Jun 2019 19:10:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726960AbfFETJg (ORCPT ); Wed, 5 Jun 2019 15:09:36 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:49232 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726660AbfFETJf (ORCPT ); Wed, 5 Jun 2019 15:09:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=iu6giSDQep7gyGP1lDKtlc6IYXmVnaTVrX/CCTaVb0M=; b=DjtDAC+Fj3ONzc3f/LuiTUKvxo SDHshO4T3HLu3MQm0sH37Fbdepe5vHrMh2X85ZIRB3VKOFCMD6eu9hbSHPVXb/JEZlTVz4fb/QaOO BDhpIj3EXUQVUT2d08hdmc3vkXIK09a1I2y36ZeBdJojaOBtTGQKqMEq1bBjcQ9+oxSMJ6wh9XndQ XFFmfRdMT7PK47VLSVOApDsSWhQlhOShT9lQkQ27wwQ5dQ9Reu8WMtU3dBcEwVqIH/+3N3VSUo+dA Al21lR6b/0ULA1Vne9lErcUCQ0iQn/gB9iDUQXUDKnuMLXYjLzLH5ccM+azrWJFGQdvlsLAuQBjnS RkEjsxRA==; Received: from 089144193064.atnat0002.highway.a1.net ([89.144.193.64] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hYbHo-00067d-E1; Wed, 05 Jun 2019 19:09:25 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Sebastian Ott , Sagi Grimberg , Max Gurtovoy , Bart Van Assche , Ulf Hansson , Alan Stern , Oliver Neukum , linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, megaraidlinux.pdl@broadcom.com, MPT-FusionLinux.pdl@broadcom.com, linux-hyperv@vger.kernel.org, linux-usb@vger.kernel.org, usb-storage@lists.one-eyed-alien.net, linux-kernel@vger.kernel.org Subject: [PATCH 12/13] usb-storage: set virt_boundary_mask in the scsi host Date: Wed, 5 Jun 2019 21:08:35 +0200 Message-Id: <20190605190836.32354-13-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190605190836.32354-1-hch@lst.de> References: <20190605190836.32354-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This ensures all proper DMA layer handling is taken care of by the SCSI midlayer. Signed-off-by: Christoph Hellwig --- drivers/usb/storage/scsiglue.c | 10 ---------- drivers/usb/storage/usb.c | 10 ++++++++++ 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 59190d88fa9f..02c3b66b3f78 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -65,7 +65,6 @@ static const char* host_info(struct Scsi_Host *host) static int slave_alloc (struct scsi_device *sdev) { struct us_data *us = host_to_us(sdev->host); - int maxp; /* * Set the INQUIRY transfer length to 36. We don't use any of @@ -74,15 +73,6 @@ static int slave_alloc (struct scsi_device *sdev) */ sdev->inquiry_len = 36; - /* - * USB has unusual scatter-gather requirements: the length of each - * scatterlist element except the last must be divisible by the - * Bulk maxpacket value. Fortunately this value is always a - * power of 2. Inform the block layer about this requirement. - */ - maxp = usb_maxpacket(us->pusb_dev, us->recv_bulk_pipe, 0); - blk_queue_virt_boundary(sdev->request_queue, maxp - 1); - /* * Some host controllers may have alignment requirements. * We'll play it safe by requiring 512-byte alignment always. diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 9a79cd9762f3..b0f23f4f58e3 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -1050,6 +1050,16 @@ int usb_stor_probe2(struct us_data *us) usb_autopm_get_interface_no_resume(us->pusb_intf); snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", dev_name(&us->pusb_intf->dev)); + + /* + * USB has unusual scatter-gather requirements: the length of each + * scatterlist element except the last must be divisible by the + * Bulk maxpacket value. Fortunately this value is always a + * power of 2. Inform the block layer about this requirement. + */ + us_to_host(us)->virt_boundary_mask = + usb_maxpacket(us->pusb_dev, us->recv_bulk_pipe, 0) - 1; + result = scsi_add_host(us_to_host(us), dev); if (result) { dev_warn(dev,