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[216.228.112.22]) by smtp.gmail.com with ESMTPSA id i62sm3405092pfe.140.2020.10.02.16.59.31 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 02 Oct 2020 16:59:31 -0700 (PDT) Date: Fri, 2 Oct 2020 16:53:30 -0700 From: Nicolin Chen To: Dmitry Osipenko Subject: Re: [PATCH v4 1/3] iommu/tegra-smmu: Use fwspec in tegra_smmu_(de)attach_dev Message-ID: <20201002235329.GA11409@Asurada-Nvidia> References: <20201002060807.32138-1-nicoleotsuka@gmail.com> <20201002060807.32138-2-nicoleotsuka@gmail.com> <20201002194508.GD29706@Asurada-Nvidia> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.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" T24gRnJpLCBPY3QgMDIsIDIwMjAgYXQgMTE6MTI6MThQTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+IDAyLjEwLjIwMjAgMjI6NDUsIE5pY29saW4gQ2hlbiDQv9C40YjQtdGCOgo+ID4g T24gRnJpLCBPY3QgMDIsIDIwMjAgYXQgMDU6NDE6NTBQTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+ID4+IDAyLjEwLjIwMjAgMDk6MDgsIE5pY29saW4gQ2hlbiDQv9C40YjQtdGCOgo+ ID4+PiAgc3RhdGljIGludCB0ZWdyYV9zbW11X2F0dGFjaF9kZXYoc3RydWN0IGlvbW11X2RvbWFp biAqZG9tYWluLAo+ID4+PiAgCQkJCSBzdHJ1Y3QgZGV2aWNlICpkZXYpCj4gPj4+ICB7Cj4gPj4+ ICsJc3RydWN0IGlvbW11X2Z3c3BlYyAqZndzcGVjID0gZGV2X2lvbW11X2Z3c3BlY19nZXQoZGV2 KTsKPiA+Pj4gIAlzdHJ1Y3QgdGVncmFfc21tdSAqc21tdSA9IGRldl9pb21tdV9wcml2X2dldChk ZXYpOwo+ID4+PiAgCXN0cnVjdCB0ZWdyYV9zbW11X2FzICphcyA9IHRvX3NtbXVfYXMoZG9tYWlu KTsKPiA+Pj4gLQlzdHJ1Y3QgZGV2aWNlX25vZGUgKm5wID0gZGV2LT5vZl9ub2RlOwo+ID4+PiAt CXN0cnVjdCBvZl9waGFuZGxlX2FyZ3MgYXJnczsKPiA+Pj4gIAl1bnNpZ25lZCBpbnQgaW5kZXgg PSAwOwo+ID4+PiAgCWludCBlcnIgPSAwOwo+ID4+PiAgCj4gPj4+IC0Jd2hpbGUgKCFvZl9wYXJz ZV9waGFuZGxlX3dpdGhfYXJncyhucCwgImlvbW11cyIsICIjaW9tbXUtY2VsbHMiLCBpbmRleCwK PiA+Pj4gLQkJCQkJICAgJmFyZ3MpKSB7Cj4gPj4+IC0JCXVuc2lnbmVkIGludCBzd2dyb3VwID0g YXJncy5hcmdzWzBdOwo+ID4+PiAtCj4gPj4+IC0JCWlmIChhcmdzLm5wICE9IHNtbXUtPmRldi0+ b2Zfbm9kZSkgewo+ID4+PiAtCQkJb2Zfbm9kZV9wdXQoYXJncy5ucCk7Cj4gPj4+IC0JCQljb250 aW51ZTsKPiA+Pj4gLQkJfQo+ID4+PiAtCj4gPj4+IC0JCW9mX25vZGVfcHV0KGFyZ3MubnApOwo+ ID4+PiArCWlmICghZndzcGVjKQo+ID4+PiArCQlyZXR1cm4gLUVOT0VOVDsKPiA+Pgo+ID4+IENv dWxkIHRoZSAhZndzcGVjIGV2ZXIgYmUgdHJ1ZSBoZXJlIGFzIHdlbGw/Cj4gPiAKPiA+IFRoZXJl IGFyZSBtdWx0aXBsZSBjYWxsZXJzIG9mIHRoaXMgZnVuY3Rpb24uIEl0J3MgcmVhbGx5IG5vdCB0 aGF0Cj4gPiBzdHJhaWdodGZvcndhcmQgdG8gdHJhY2sgZXZlcnkgb25lIG9mIHRoZW0uIFNvIEkn ZCByYXRoZXIgaGF2ZSBpdAo+ID4gaGVyZSBhcyBvdGhlciBpb21tdSBkcml2ZXJzIGRvLiBXZSBh cmUgaHVtYW4gYmVpbmdzLCBzbyB3ZSBjb3VsZAo+ID4gaGF2ZSBtaXNzZWQgc29tZXRoaW5nIHNv bWV3aGVyZSwgZXNwZWNpYWxseSBjYWxsZXJzIGFyZSBub3QgZnJvbQo+ID4gdGVncmEtKiBkcml2 ZXJzLgo+ID4gCj4gCj4gSSdtIGxvb2tpbmcgYXQgdGhlIElPTU1VIGNvcmUgYW5kIGl0IHJlcXVp cmVzIGRldmljZSB0byBiZSBpbiBJT01NVQo+IGdyb3VwIGJlZm9yZSBhdHRhY2hfZGV2KCkgY291 bGQgYmUgY2FsbGVkLgo+IAo+IFRoZSBncm91cCBjYW4ndCBiZSBhc3NpZ25lZCB0byBkZXZpY2Ug d2l0aG91dCB0aGUgZndzcGVjLCBzZWUKPiB0ZWdyYV9zbW11X2RldmljZV9ncm91cCgpLgo+Cj4g U2VlbXMgbWFqb3JpdHkgb2YgSU9NTVUgZHJpdmVycyBhcmUgY2hlY2tpbmcgZGV2X2lvbW11X3By aXZfZ2V0KCkgZm9yCj4gTlVMTCBpbiBhdHRhY2hfZGV2KCksIHNvbWUgbm90IGNoZWNraW5nIGFu eXRoaW5nLCBzb21lIGNoZWNrIGJvdGggYW5kCj4gb25seSBhcm0tc21tdSBjaGVja3MgdGhlIGZ3 c3BlYy4KCkFzIEkgc2FpZCBhIGNvdXBsZSBvZiBkYXlzIGFnbywgSSBkb24ndCBsaWtlIHRvIGFz c3VtZSB0aGF0IHRoZQpjYWxsZXJzIHdvbid0IGNoYW5nZS4gQW5kIHRoaXMgdGltZSwgaXQncyBm cm9tIG9wZW4gY29kZS4gU28gSQpkb24ndCB3YW50IHRvIGFzc3VtZSB0aGF0IHRoZXJlIHdvbid0 IGJlIGEgY2hhbmdlLgoKSWYgeW91IGFyZSBjb25maWRlbnQgdGhhdCB0aGVyZSBpcyBubyBuZWVk IHRvIGFkZCBzdWNoIGEgY2hlY2ssCnBsZWFzZSBzZW5kIHBhdGNoZXMgdG8gcmVtb3ZlIHRob3Nl IGNoZWNrcyBpbiB0aG9zZSBkcml2ZXJzIHRvCnNlZSBpZiBvdGhlcnMgd291bGQgYWdyZWUuIEkg d291bGQgYmUgd2lsbGluZyB0byByZW1vdmUgaXQgYWZ0ZXIKdGhhdC4gT3RoZXJ3aXNlLCBJJ2Qg bGlrZSB0byBrZWVwIHRoaXMuCgpUaGFua3MgZm9yIHRoZSByZXZpZXcuCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmlvbW11IG1haWxpbmcgbGlzdAppb21t dUBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlv bi5vcmcvbWFpbG1hbi9saXN0aW5mby9pb21tdQ==