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[109.252.170.211]) by smtp.googlemail.com with ESMTPSA id z7sm62625lfc.59.2020.09.29.22.39.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Sep 2020 22:39:55 -0700 (PDT) Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev To: Nicolin Chen , thierry.reding@gmail.com, joro@8bytes.org, krzk@kernel.org References: <20200930003013.31289-1-nicoleotsuka@gmail.com> <20200930003013.31289-3-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: Date: Wed, 30 Sep 2020 08:39:54 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200930003013.31289-3-nicoleotsuka@gmail.com> Content-Language: en-US Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" MzAuMDkuMjAyMCAwMzozMCwgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gIHN0YXRpYyBpbnQg dGVncmFfc21tdV9hdHRhY2hfZGV2KHN0cnVjdCBpb21tdV9kb21haW4gKmRvbWFpbiwKPiAgCQkJ CSBzdHJ1Y3QgZGV2aWNlICpkZXYpCj4gIHsKPiArCXN0cnVjdCBpb21tdV9md3NwZWMgKmZ3c3Bl YyA9IGRldl9pb21tdV9md3NwZWNfZ2V0KGRldik7Cj4gIAlzdHJ1Y3QgdGVncmFfc21tdSAqc21t dSA9IGRldl9pb21tdV9wcml2X2dldChkZXYpOwo+ICAJc3RydWN0IHRlZ3JhX3NtbXVfYXMgKmFz ID0gdG9fc21tdV9hcyhkb21haW4pOwo+IC0Jc3RydWN0IGRldmljZV9ub2RlICpucCA9IGRldi0+ b2Zfbm9kZTsKPiAtCXN0cnVjdCBvZl9waGFuZGxlX2FyZ3MgYXJnczsKPiAgCXVuc2lnbmVkIGlu dCBpbmRleCA9IDA7Cj4gIAlpbnQgZXJyID0gMDsKPiAgCj4gLQl3aGlsZSAoIW9mX3BhcnNlX3Bo YW5kbGVfd2l0aF9hcmdzKG5wLCAiaW9tbXVzIiwgIiNpb21tdS1jZWxscyIsIGluZGV4LAo+IC0J CQkJCSAgICZhcmdzKSkgewo+IC0JCXVuc2lnbmVkIGludCBzd2dyb3VwID0gYXJncy5hcmdzWzBd Owo+IC0KPiAtCQlpZiAoYXJncy5ucCAhPSBzbW11LT5kZXYtPm9mX25vZGUpIHsKPiAtCQkJb2Zf bm9kZV9wdXQoYXJncy5ucCk7Cj4gLQkJCWNvbnRpbnVlOwo+IC0JCX0KPiAtCj4gLQkJb2Zfbm9k ZV9wdXQoYXJncy5ucCk7Cj4gKwlpZiAoIWZ3c3BlYyB8fCBmd3NwZWMtPm9wcyAhPSAmdGVncmFf c21tdV9vcHMpCj4gKwkJcmV0dXJuIC1FTk9FTlQ7CgpzLyZ0ZWdyYV9zbW11X29wcy9zbW11LT5p b21tdS5vcHMvCgpTZWNvbmRseSwgaXMgaXQgZXZlbiBwb3NzaWJsZSB0aGF0IGZ3c3BlYyBjb3Vs ZCBiZSBOVUxMIGhlcmUgb3IgdGhhdApmd3NwZWMtPm9wcyAhPSBzbW11LT5vcHM/Cl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlz dAppb21tdUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91 bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==