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Thu, 19 Dec 2019 10:14:20 +0100 From: Fabien DESSENNE To: Jia-Ju Bai , "mchehab@kernel.org" Cc: "linux-media@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run() Thread-Topic: [PATCH] media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run() Thread-Index: AQHVtaxEax7uyZMMgkib5/WTY24ilKfBGaKAgAADpgA= Date: Thu, 19 Dec 2019 09:14:20 +0000 Message-Id: <52df5013-3188-d27c-7ad7-e05cd4912a3d@st.com> References: <20191218140537.12193-1-baijiaju1990@gmail.com> <705a5381-4edd-211e-9602-78a2b4b67ea9@st.com> In-Reply-To: <705a5381-4edd-211e-9602-78a2b4b67ea9@st.com> Accept-Language: fr-FR, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted X-Originating-IP: [10.75.127.48] Content-Type: text/plain; charset="utf-8" Content-ID: Content-Transfer-Encoding: base64 Mime-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-19_01:2019-12-17,2019-12-19 signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-Id: X-Mailing-List: linux-kernel@vger.kernel.org Received-SPF: pass client-ip=209.132.180.67; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org QW5kIGNhbGxpbmcgcmVhZGxfcG9sbF90aW1lb3V0X2F0b21pYygpIHdvdWxkIHByb2JhYmx5IGJl IGJldHRlciA6KQ0KDQoNCk9uIDE5LzEyLzIwMTkgMTA6MDEgQU0sIEZhYmllbiBERVNTRU5ORSB3 cm90ZToNCj4gSGkgSmlhX0p1LA0KPg0KPg0KPiBUaGlzIGlzIGEgZ29vZCBmaW5kaW5nLiBTZWUg bXkgcmVtYXJrcyBiZWxvdy4NCj4NCj4NCj4gT24gMTgvMTIvMjAxOSAzOjA1IFBNLCBKaWEtSnUg QmFpIHdyb3RlOg0KPj4gVGhlIGRyaXZlciBtYXkgc2xlZXAgd2hpbGUgaG9sZGluZyBhIHNwaW5s b2NrLg0KPj4gVGhlIGZ1bmN0aW9uIGNhbGwgcGF0aCAoZnJvbSBib3R0b20gdG8gdG9wKSBpbiBM aW51eCA0LjE5IGlzOg0KPj4NCj4+IGRyaXZlcnMvbWVkaWEvcGxhdGZvcm0vc3RpL2JkaXNwL2Jk aXNwLWh3LmMsIDM4NToNCj4+IMKgwqDCoMKgbXNsZWVwIGluIGJkaXNwX2h3X3Jlc2V0DQo+PiBk cml2ZXJzL21lZGlhL3BsYXRmb3JtL3N0aS9iZGlzcC9iZGlzcC12NGwyLmMsIDM0MToNCj4+IMKg wqDCoMKgYmRpc3BfaHdfcmVzZXQgaW4gYmRpc3BfZGV2aWNlX3J1bg0KPj4gZHJpdmVycy9tZWRp YS9wbGF0Zm9ybS9zdGkvYmRpc3AvYmRpc3AtdjRsMi5jLCAzMTc6DQo+PiDCoMKgwqDCoF9yYXdf c3Bpbl9sb2NrX2lycXNhdmUgaW4gYmRpc3BfZGV2aWNlX3J1bg0KPj4NCj4+IFRvIGZpeCB0aGlz IGJ1ZywgbXNsZWVwKCkgaXMgcmVwbGFjZWQgd2l0aCBtZGVsYXkoKS4NCj4+DQo+PiBUaGlzIGJ1 ZyBpcyBmb3VuZCBieSBhIHN0YXRpYyBhbmFseXNpcyB0b29sIFNUQ2hlY2sgd3JpdHRlbiBieSBt eXNlbGYuDQo+Pg0KPj4gU2lnbmVkLW9mZi1ieTogSmlhLUp1IEJhaSA8YmFpamlhanUxOTkwQGdt YWlsLmNvbT4NCj4+IC0tLQ0KPj4gwqAgZHJpdmVycy9tZWRpYS9wbGF0Zm9ybS9zdGkvYmRpc3Av YmRpc3AtaHcuYyB8IDIgKy0NCj4+IMKgIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwg MSBkZWxldGlvbigtKQ0KPj4NCj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL21lZGlhL3BsYXRmb3Jt L3N0aS9iZGlzcC9iZGlzcC1ody5jIA0KPj4gYi9kcml2ZXJzL21lZGlhL3BsYXRmb3JtL3N0aS9i ZGlzcC9iZGlzcC1ody5jDQo+PiBpbmRleCA0MzcyYWJiYjU5NTAuLjFhNTYzNDg4MDVhMiAxMDA2 NDQNCj4+IC0tLSBhL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vc3RpL2JkaXNwL2JkaXNwLWh3LmMN Cj4+ICsrKyBiL2RyaXZlcnMvbWVkaWEvcGxhdGZvcm0vc3RpL2JkaXNwL2JkaXNwLWh3LmMNCj4+ IEBAIC0zODIsNyArMzgyLDcgQEAgaW50IGJkaXNwX2h3X3Jlc2V0KHN0cnVjdCBiZGlzcF9kZXYg KmJkaXNwKQ0KPj4gwqDCoMKgwqDCoCBmb3IgKGkgPSAwOyBpIDwgUE9MTF9SU1RfTUFYOyBpKysp IHsNCj4+IMKgwqDCoMKgwqDCoMKgwqDCoCBpZiAocmVhZGwoYmRpc3AtPnJlZ3MgKyBCTFRfU1RB MSkgJiBCTFRfU1RBMV9JRExFKQ0KPj4gwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgYnJlYWs7 DQo+PiAtwqDCoMKgwqDCoMKgwqAgbXNsZWVwKFBPTExfUlNUX0RFTEFZX01TKTsNCj4+ICvCoMKg wqDCoMKgwqDCoCBtZGVsYXkoUE9MTF9SU1RfREVMQVlfTVMpOw0KPg0KPiBJbiBnZW5lcmFsLCB1 c2Ugb2YgbWRlbGF5IGlzIGRpc2NvdXJhZ2VkLiBIZXJlIHdlIGNhbiB1c2UgdWRlbGF5IA0KPiBp bnN0ZWFkIG9mLCB3aXRoIGEgbWF4IHZhbHVlIG9mIE1BWF9VREVMQVlfTVMgd2hpY2ggaXMgMiBv biBBUk0uDQo+DQo+IFNvLCBpbnN0ZWFkIG9mIHJ1bm5pbmcgNTAgKFBPTExfUlNUX01BWCkgdGlt ZXMgYSAyMG1zIA0KPiAoUE9MTF9SU1RfREVMQVlfTVMpIGRlbGF5LCB3ZSBjYW4gcnVuIDUwMCB0 aW1lcyBhIDJtcyAoMjAwMHVzKSBkZWxheS4NCj4NCj4gVGhlIGZvbGxvd2luZyBjaGFuZ2VzIHNo YWxsIGJlIGZpbmU6DQo+DQo+IMKgwqDCoCBQT0xMX1JTVF9NQVggNTAgLS0+IDUwMA0KPg0KPiDC oMKgwqAgUE9MTF9SU1RfREVMQVlfTVPCoCAyMCAtLT4gMg0KPg0KPiDCoMKgwqAgbWRlbGF5KFBP TExfUlNUX0RFTEFZX01TKSAtLT4gdWRlbGF5KFBPTExfUlNUX0RFTEFZX01TICogMTAwMCkNCj4N Cj4NCj4gQlINCj4NCj4gRmFiaWVuDQo+DQo+DQo+PiDCoMKgwqDCoMKgIH0NCj4+IMKgwqDCoMKg wqAgaWYgKGkgPT0gUE9MTF9SU1RfTUFYKQ0KPj4gwqDCoMKgwqDCoMKgwqDCoMKgIGRldl9lcnIo YmRpc3AtPmRldiwgIlJlc2V0IHRpbWVvdXRcbiIpOw==