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when rmmod the driver of the last device in group To: "chenxiang (M)" , will@kernel.org, joro@8bytes.org References: <1623033782-57907-1-git-send-email-chenxiang66@hisilicon.com> <75178f05-7831-f6c1-ad2d-5671a65a69bb@arm.com> <9a4764fc-28bc-e4cb-10f5-e4934d24b9b5@hisilicon.com> From: Robin Murphy Message-ID: <4de7e383-e481-b3d5-7030-20cc8d7740fc@arm.com> Date: Tue, 8 Jun 2021 15:17:32 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <9a4764fc-28bc-e4cb-10f5-e4934d24b9b5@hisilicon.com> Content-Language: en-GB Cc: iommu@lists.linux-foundation.org, linuxarm@openeuler.org, linuxarm@huawei.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: 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