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[109.252.91.252]) by smtp.googlemail.com with ESMTPSA id f19sm316335lfs.85.2020.10.02.07.23.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Oct 2020 07:23:14 -0700 (PDT) Subject: Re: [PATCH v4 2/3] iommu/tegra-smmu: Rework tegra_smmu_probe_device() To: Nicolin Chen , thierry.reding@gmail.com, joro@8bytes.org References: <20201002060807.32138-1-nicoleotsuka@gmail.com> <20201002060807.32138-3-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: <070a13b2-cde2-ab9e-7ee0-8fb71fb64d5d@gmail.com> Date: Fri, 2 Oct 2020 17:23:14 +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: <20201002060807.32138-3-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" MDIuMTAuMjAyMCAwOTowOCwgTmljb2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gIHN0YXRpYyBzdHJ1 Y3QgaW9tbXVfZGV2aWNlICp0ZWdyYV9zbW11X3Byb2JlX2RldmljZShzdHJ1Y3QgZGV2aWNlICpk ZXYpCj4gIHsKPiAtCXN0cnVjdCBkZXZpY2Vfbm9kZSAqbnAgPSBkZXYtPm9mX25vZGU7Cj4gLQlz dHJ1Y3QgdGVncmFfc21tdSAqc21tdSA9IE5VTEw7Cj4gLQlzdHJ1Y3Qgb2ZfcGhhbmRsZV9hcmdz IGFyZ3M7Cj4gLQl1bnNpZ25lZCBpbnQgaW5kZXggPSAwOwo+IC0JaW50IGVycjsKPiAtCj4gLQl3 aGlsZSAob2ZfcGFyc2VfcGhhbmRsZV93aXRoX2FyZ3MobnAsICJpb21tdXMiLCAiI2lvbW11LWNl bGxzIiwgaW5kZXgsCj4gLQkJCQkJICAmYXJncykgPT0gMCkgewo+IC0JCXNtbXUgPSB0ZWdyYV9z bW11X2ZpbmQoYXJncy5ucCk7Cj4gLQkJaWYgKHNtbXUpIHsKPiAtCQkJZXJyID0gdGVncmFfc21t dV9jb25maWd1cmUoc21tdSwgZGV2LCAmYXJncyk7Cj4gLQkJCW9mX25vZGVfcHV0KGFyZ3MubnAp Owo+IC0KPiAtCQkJaWYgKGVyciA8IDApCj4gLQkJCQlyZXR1cm4gRVJSX1BUUihlcnIpOwo+IC0K PiAtCQkJLyoKPiAtCQkJICogT25seSBhIHNpbmdsZSBJT01NVSBtYXN0ZXIgaW50ZXJmYWNlIGlz IGN1cnJlbnRseQo+IC0JCQkgKiBzdXBwb3J0ZWQgYnkgdGhlIExpbnV4IGtlcm5lbCwgc28gYWJv cnQgYWZ0ZXIgdGhlCj4gLQkJCSAqIGZpcnN0IG1hdGNoLgo+IC0JCQkgKi8KPiAtCQkJZGV2X2lv bW11X3ByaXZfc2V0KGRldiwgc21tdSk7Cj4gLQo+IC0JCQlicmVhazsKPiAtCQl9Cj4gLQo+IC0J CW9mX25vZGVfcHV0KGFyZ3MubnApOwo+IC0JCWluZGV4Kys7Cj4gLQl9Cj4gKwlzdHJ1Y3QgdGVn cmFfc21tdSAqc21tdSA9IGRldl9pb21tdV9wcml2X2dldChkZXYpOwo+ICAKPiAgCWlmICghc21t dSkKPiAgCQlyZXR1cm4gRVJSX1BUUigtRU5PREVWKTsKClRoZSAhc21tdSBjYW4ndCBldmVyIGJl IHRydWUgbm93LCBpc24ndCBpdD8gVGhlbiBwbGVhc2UgcmVtb3ZlIGl0LgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9t bXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRp b24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=