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Thu, 16 Jun 2022 03:08:25 -0700 Received: from mtkmbs10n1.mediatek.inc (172.21.101.34) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 16 Jun 2022 03:08:23 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 18:08:22 +0800 Received: from mhfsdcap04 (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 18:08:21 +0800 Message-ID: Subject: Re: [PATCH v2 2/5] iommu/mediatek: Add error path for loop of mm_dts_parse From: Yong Wu To: Robin Murphy CC: Joerg Roedel , Matthias Brugger , Will Deacon , , , , , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Date: Thu, 16 Jun 2022 18:08:21 +0800 In-Reply-To: References: <20220616054203.11365-1-yong.wu@mediatek.com> <20220616054203.11365-3-yong.wu@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N Content-Transfer-Encoding: base64 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220616_030831_429902_D77C359B X-CRM114-Status: GOOD ( 25.06 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org T24gVGh1LCAyMDIyLTA2LTE2IGF0IDA5OjU5ICswMTAwLCBSb2JpbiBNdXJwaHkgd3JvdGU6DQo+ IE9uIDIwMjItMDYtMTYgMDY6NDIsIFlvbmcgV3Ugd3JvdGU6DQo+ID4gVGhlIG10a19pb21tdV9t bV9kdHNfcGFyc2Ugd2lsbCBwYXJzZSB0aGUgc21pIGxhcmJzIG5vZGVzLiBpZiB0aGUNCj4gPiBp KzENCj4gPiBsYXJiIGlzIHBhcnNlZCBmYWlsKHJldHVybiAtRUlOVkFMKSwgd2Ugc2hvdWxkIG9m X25vZGVfcHV0IGZvciB0aGUNCj4gPiAwLi5pDQo+ID4gbGFyYnMuIEluIHRoZSBmYWlsIHBhdGgs IG9uZSBvZl9ub2RlX3B1dCBtYXRjaGVzIHdpdGgNCj4gPiBvZl9wYXJzZV9waGFuZGxlIGluDQo+ ID4gaXQuDQo+ID4gDQo+ID4gRml4ZXM6IGQyZTlhMTEwMmNmYyAoImlvbW11L21lZGlhdGVrOiBD b250YWluIE1NIElPTU1VIGZsb3cgd2l0aA0KPiA+IHRoZSBNTSBUWVBFIikNCj4gPiBTaWduZWQt b2ZmLWJ5OiBZb25nIFd1IDx5b25nLnd1QG1lZGlhdGVrLmNvbT4NCj4gPiAtLS0NCj4gPiAgIGRy aXZlcnMvaW9tbXUvbXRrX2lvbW11LmMgfCAyMSArKysrKysrKysrKysrKysrLS0tLS0NCj4gPiAg IDEgZmlsZSBjaGFuZ2VkLCAxNiBpbnNlcnRpb25zKCspLCA1IGRlbGV0aW9ucygtKQ0KPiA+IA0K PiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2lvbW11L210a19pb21tdS5jIGIvZHJpdmVycy9pb21t dS9tdGtfaW9tbXUuYw0KPiA+IGluZGV4IDNiMjQ4OWU4YTZkZC4uYWIyNDA3ODkzOGJmIDEwMDY0 NA0KPiA+IC0tLSBhL2RyaXZlcnMvaW9tbXUvbXRrX2lvbW11LmMNCj4gPiArKysgYi9kcml2ZXJz L2lvbW11L210a19pb21tdS5jDQo+ID4gQEAgLTEwNzEsMTIgKzEwNzEsMTIgQEAgc3RhdGljIGlu dCBtdGtfaW9tbXVfbW1fZHRzX3BhcnNlKHN0cnVjdA0KPiA+IGRldmljZSAqZGV2LCBzdHJ1Y3Qg Y29tcG9uZW50X21hdGNoICoqbQ0KPiA+ICAgDQo+ID4gICAJCXBsYXJiZGV2ID0gb2ZfZmluZF9k ZXZpY2VfYnlfbm9kZShsYXJibm9kZSk7DQo+ID4gICAJCWlmICghcGxhcmJkZXYpIHsNCj4gPiAt CQkJb2Zfbm9kZV9wdXQobGFyYm5vZGUpOw0KPiA+IC0JCQlyZXR1cm4gLUVOT0RFVjsNCj4gPiAr CQkJcmV0ID0gLUVOT0RFVjsNCj4gPiArCQkJZ290byBlcnJfbGFyYm5vZGVfcHV0Ow0KPiA+ICAg CQl9DQo+ID4gICAJCWlmICghcGxhcmJkZXYtPmRldi5kcml2ZXIpIHsNCj4gPiAtCQkJb2Zfbm9k ZV9wdXQobGFyYm5vZGUpOw0KPiA+IC0JCQlyZXR1cm4gLUVQUk9CRV9ERUZFUjsNCj4gPiArCQkJ cmV0ID0gLUVQUk9CRV9ERUZFUjsNCj4gPiArCQkJZ290byBlcnJfbGFyYm5vZGVfcHV0Ow0KPiA+ ICAgCQl9DQo+ID4gICAJCWRhdGEtPmxhcmJfaW11W2lkXS5kZXYgPSAmcGxhcmJkZXYtPmRldjsN Cj4gPiAgIA0KPiA+IEBAIC0xMTA3LDkgKzExMDcsMjAgQEAgc3RhdGljIGludCBtdGtfaW9tbXVf bW1fZHRzX3BhcnNlKHN0cnVjdA0KPiA+IGRldmljZSAqZGV2LCBzdHJ1Y3QgY29tcG9uZW50X21h dGNoICoqbQ0KPiA+ICAgCQkJICAgICAgIERMX0ZMQUdfU1RBVEVMRVNTIHwgRExfRkxBR19QTV9S VU5USU1FKTsNCj4gPiAgIAlpZiAoIWxpbmspIHsNCj4gPiAgIAkJZGV2X2VycihkZXYsICJVbmFi bGUgdG8gbGluayAlcy5cbiIsIGRldl9uYW1lKGRhdGEtDQo+ID4gPnNtaWNvbW1fZGV2KSk7DQo+ ID4gLQkJcmV0dXJuIC1FSU5WQUw7DQo+ID4gKwkJcmV0ID0gLUVJTlZBTDsNCj4gPiArCQlnb3Rv IGVycl9sYXJibm9kZV9wdXQ7DQo+ID4gICAJfQ0KPiA+ICAgCXJldHVybiAwOw0KPiA+ICsNCj4g PiArZXJyX2xhcmJub2RlX3B1dDoNCj4gPiArCXdoaWxlIChpLS0pIHsNCj4gPiArCQlsYXJibm9k ZSA9IG9mX3BhcnNlX3BoYW5kbGUoZGV2LT5vZl9ub2RlLA0KPiA+ICJtZWRpYXRlayxsYXJicyIs IGkpOw0KPiA+ICsJCWlmIChsYXJibm9kZSAmJiBvZl9kZXZpY2VfaXNfYXZhaWxhYmxlKGxhcmJu b2RlKSkgew0KPiA+ICsJCQlvZl9ub2RlX3B1dChsYXJibm9kZSk7DQo+ID4gKwkJCW9mX25vZGVf cHV0KGxhcmJub2RlKTsNCj4gPiArCQl9DQo+IA0KPiBUaGlzIGxvb2tzIGEgYml0IGF3a3dhcmQg LSBjb3VsZCB3ZSBub3QganVzdCBpdGVyYXRlIHRocm91Z2ggDQo+IGRhdGEtPmxhcmJfaW11IGFu ZCBwdXQgZGV2LT5vZl9ub2RlIGZvciBlYWNoIHZhbGlkIGRldj8NCg0KSXQgc2hvdWxkIHdvcmsu IFRoYW5rcyB2ZXJ5IG11Y2guDQoNCj4gDQo+IEFsc28sIG9mX2ZpbmRfZGV2aWNlX2J5X25vZGUo KSB0YWtlcyBhIHJlZmVyZW5jZSBvbiB0aGUgc3RydWN0DQo+IGRldmljZSANCj4gaXRzZWxmLCBz byBzdHJpY3RseSB3ZSBzaG91bGQgYmUgZG9pbmcgcHV0X2RldmljZSgpIG9uIHRob3NlIGFzIHdl bGwNCj4gaWYgd2UncmUgYmFpbGluZyBvdXQuDQoNClRoYW5rcyBmb3IgdGhpcyBoaW50LiBBIG5l dyByZWZlcmVuY2UgZm9yIG1lLiBJIHdpbGwgYWRkIGl0Lg0KDQo+IA0KPiBSb2Jpbi4NCj4gDQo+ ID4gKwl9DQo+ID4gKwlyZXR1cm4gcmV0Ow0KPiA+ICAgfQ0KPiA+ICAgDQo+ID4gICBzdGF0aWMg aW50IG10a19pb21tdV9wcm9iZShzdHJ1Y3QgcGxhdGZvcm1fZGV2aWNlICpwZGV2KQ0K