From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: [PATCH 4/7] iommu: Add driver-not-bound notification Date: Fri, 09 Jun 2017 15:59:59 -0600 Message-ID: <20170609215959.31986.60028.stgit@gimli.home> References: <20170609215816.31986.89321.stgit@gimli.home> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: eric.auger@redhat.com, Joerg Roedel , alex.williamson@redhat.com, linux-kernel@vger.kernel.org To: kvm@vger.kernel.org Return-path: In-Reply-To: <20170609215816.31986.89321.stgit@gimli.home> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org The driver core supports a BUS_NOTIFY_DRIVER_NOT_BOUND notification sent if a driver fails to bind to a device. Extend IOMMU group notifications to include a version of this. Signed-off-by: Alex Williamson Cc: Joerg Roedel --- drivers/iommu/iommu.c | 2 ++ include/linux/iommu.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 3b67144dead2..cf6051db4208 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1113,6 +1113,8 @@ 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_DRIVER_NOT_BOUND: + group_action = IOMMU_GROUP_NOTIFY_DRIVER_NOT_BOUND; } if (group_action) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 2e4de0deee53..54a0eb96da25 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -268,6 +268,7 @@ static inline void iommu_device_set_fwnode(struct iommu_device *iommu, #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_DRIVER_NOT_BOUND 7 /* Driver bind failed */ extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops); extern bool iommu_present(struct bus_type *bus);