From patchwork Tue Aug 5 10:47:34 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 4677741 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C5490C0338 for ; Tue, 5 Aug 2014 10:54:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3CA1D2018B for ; Tue, 5 Aug 2014 10:54:37 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1CC0A2018E for ; Tue, 5 Aug 2014 10:54:31 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XEcLl-0003fX-NI; Tue, 05 Aug 2014 10:52:13 +0000 Received: from mailout3.w1.samsung.com ([210.118.77.13]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XEcIy-0007Zj-KR for linux-arm-kernel@lists.infradead.org; Tue, 05 Aug 2014 10:49:21 +0000 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout3.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N9T008BUY1H9W00@mailout3.w1.samsung.com> for linux-arm-kernel@lists.infradead.org; Tue, 05 Aug 2014 11:48:53 +0100 (BST) X-AuditID: cbfec7f4-b7f156d0000063c7-ad-53e0b6966202 Received: from eusync3.samsung.com ( [203.254.199.213]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 7C.0C.25543.696B0E35; Tue, 05 Aug 2014 11:48:54 +0100 (BST) Received: from amdc1339.digital.local ([106.116.147.30]) by eusync3.samsung.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0N9T0057MY17SE80@eusync3.samsung.com>; Tue, 05 Aug 2014 11:48:54 +0100 (BST) From: Marek Szyprowski To: iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 06/29] drivers: iommu: add notify about failed bind Date: Tue, 05 Aug 2014 12:47:34 +0200 Message-id: <1407235677-26324-7-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1407235677-26324-1-git-send-email-m.szyprowski@samsung.com> References: <1407235677-26324-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrOLMWRmVeSWpSXmKPExsVy+t/xq7rTtj0INph3mc3i76Rj7BbNi9ez WUy6P4HFYsF+a4vO2RvYLXoXXGWzONv0ht2ic+ISdosvVx4yWWx6fI3V4vKuOWwWM87vY7JY e+Quu8Wp65/ZLP71HmS0OHP6EqvF/z072C0Ov2lntTjycDe7xapdfxgtbv/mcxD1eHJwHpPH 71+TGD12zrrL7jG7Yyarx6ZVnWwe++euYffYvKTe4/a/x8wek28sZ/S4cqKJ1aO3+R2bx5ar 7SwefVtWMXp83iQXwBfFZZOSmpNZllqkb5fAlbH7u3DBB+6Kg7+vsjQwtnB1MXJySAiYSJy7 focNwhaTuHBvPZDNxSEksJRR4uD1JawQTh+TxI+mm8wgVWwChhJdb7vAqkQEehkl+pt+MIE4 zALrWCX2915nAakSFnCWOPZ6HthcFgFVib5tu1hBbF4BD4m1LQfYIfbJSfx/uYIJxOYU8JQ4 fPMAWI0QUM3PDWvYJzDyLmBkWMUomlqaXFCclJ5rqFecmFtcmpeul5yfu4kREjlfdjAuPmZ1 iFGAg1GJh9fg9N1gIdbEsuLK3EOMEhzMSiK8EmseBAvxpiRWVqUW5ccXleakFh9iZOLglGpg LJrGqLPqFO/cv7U17EqTNfunXPnyaNK/110J3b01Edf+rliyq8XNWGjXlj3+F/1Tl0/awRWf 85DbvvtxcW3rRx8p48lni+f/XuY8eaqc7vkHybtWO/+P27TC49sepiqDeU2fvzKUrAm+dGyJ dN+VRVkXfZKv9fOefNa1PCl53VL74CWaBmxLE5RYijMSDbWYi4oTATjswiV6AgAA X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140805_034920_836287_B0E92925 X-CRM114-Status: GOOD ( 10.94 ) X-Spam-Score: -5.7 (-----) Cc: Rob Herring , Thierry Reding , Shaik Ameer Basha , Arnd Bergmann , Inki Dae , Greg Kroah-Hartman , Joerg Roedel , "Rafael J. Wysocki" , Tomasz Figa , linaro-mm-sig@lists.linaro.org, Kyungmin Park , Kukjin Kim , Laurent Pinchart , Sylwester Nawrocki , Olof Johansson , Cho KyongHo , Marek Szyprowski X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for forwarding recently introduced BUS_NOTIFY_DRVBIND_FAILED event to iommu groups. This lets us getting a notify for failed device driver bind, so all the items done in IOMMU_GROUP_NOTIFY_BIND_DRIVER event can be cleaned if the driver fails to bind. Signed-off-by: Marek Szyprowski --- drivers/iommu/iommu.c | 3 +++ include/linux/iommu.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 1698360..516e93a 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -758,6 +758,9 @@ static int iommu_bus_notifier(struct notifier_block *nb, case BUS_NOTIFY_UNBOUND_DRIVER: group_action = IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER; break; + case BUS_NOTIFY_DRVBIND_FAILED: + group_action = IOMMU_GROUP_NOTIFY_DRVBIND_FAILED; + break; } if (group_action) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 20f9a52..f9fdae5 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -139,6 +139,7 @@ struct iommu_ops { #define IOMMU_GROUP_NOTIFY_BOUND_DRIVER 4 /* Post Driver bind */ #define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER 5 /* Pre Driver unbind */ #define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */ +#define IOMMU_GROUP_NOTIFY_DRVBIND_FAILED 7 /* Driver failed to bind */ extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops); extern bool iommu_present(struct bus_type *bus);