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[216.228.112.22]) by smtp.gmail.com with ESMTPSA id 123sm650855pgd.83.2020.09.29.22.45.01 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 29 Sep 2020 22:45:01 -0700 (PDT) Date: Tue, 29 Sep 2020 22:39:31 -0700 From: Nicolin Chen To: Dmitry Osipenko Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev Message-ID: <20200930053930.GD31821@Asurada-Nvidia> References: <20200930003013.31289-1-nicoleotsuka@gmail.com> <20200930003013.31289-3-nicoleotsuka@gmail.com> <03710107-b6ad-5256-4550-09c610d0fded@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <03710107-b6ad-5256-4550-09c610d0fded@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, krzk@kernel.org, jonathanh@nvidia.com, thierry.reding@gmail.com, linux-tegra@vger.kernel.org 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gV2VkLCBTZXAgMzAsIDIwMjAgYXQgMDg6MjQ6MDJBTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+IDMwLjA5LjIwMjAgMDM6MzAsIE5pY29saW4gQ2hlbiDQv9C40YjQtdGCOgo+ID4g KwkvKgo+ID4gKwkgKiBJT01NVSBjb3JlIGFsbG93cyAtRU5PREVWIHJldHVybiB0byBjYXJyeSBv bi4gU28gYnlwYXNzIGFueSBjYWxsCj4gPiArCSAqIGZyb20gYnVzX3NldF9pb21tdSgpIGR1cmlu ZyB0ZWdyYV9zbW11X3Byb2JlKCksIGFzIGEgZGV2aWNlIHdpbGwKPiA+ICsJICogY2FsbCBpbiBh Z2FpbiB2aWEgb2ZfaW9tbXVfY29uZmlndXJlIHdoZW4gZndzcGVjIGlzIHByZXBhcmVkLgo+ID4g KwkgKi8KPiA+ICsJaWYgKCFtYy0+c21tdSB8fCAhZndzcGVjIHx8IGZ3c3BlYy0+b3BzICE9ICZ0 ZWdyYV9zbW11X29wcykKPiA+ICAJCXJldHVybiBFUlJfUFRSKC1FTk9ERVYpOwo+IAo+IFRoZSAh bWMtPnNtbXUgY2FuJ3QgYmUgdHJ1ZS4KCkFyZSB5b3Ugc3VyZT8gSSBoYXZlIHJlbW92ZWQgdGhl ICJtYy0+c21tdSA9IHNtbXUiIGluIHByb2JlKCkgd2l0aAp0aGlzIGNoYW5nZS4gU28gdGhlIG9u bHkgdGltZSAibWMtPnNtbXUgPT0gIU5VTEwiIGlzIGFmdGVyIHByb2JlKCkKb2YgU01NVSBkcml2 ZXIgaXMgcmV0dXJuZWQuIEFzIG15IGNvbW1lbnRzIHNheXMsIHRlZ3JhX3NtbXVfcHJvYmUoKQpj YWxscyBpbiB0aGlzIGZ1bmN0aW9uIHZpYSBidXNfc2V0X2lvbW11KCksIHNvIG1jLT5zbW11IGNh biBiZSBOVUxMCmluIHRoaXMgY2FzZS4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KaW9tbXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5k YXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL2lvbW11