From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-bn3nam01on0054.outbound.protection.outlook.com ([104.47.33.54]:36776 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751173AbeAWLkZ (ORCPT ); Tue, 23 Jan 2018 06:40:25 -0500 From: "Ardelean, Alexandru" To: "shreeya.patel23498@gmail.com" , "lars@metafoo.de" , "21cnbao@gmail.com" <21cnbao@gmail.com>, "linux-iio@vger.kernel.org" , "Hennerich, Michael" , "jic23@kernel.org" Subject: Re: [PATCH] Staging: iio: ade7758: Expand buf_lock to cover both buffer Date: Tue, 23 Jan 2018 11:40:21 +0000 Message-ID: <1516707617.2960.19.camel@analog.com> References: <1516654973-6434-1-git-send-email-shreeya.patel23498@gmail.com> In-Reply-To: <1516654973-6434-1-git-send-email-shreeya.patel23498@gmail.com> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org T24gVHVlLCAyMDE4LTAxLTIzIGF0IDAyOjMyICswNTMwLCBTaHJlZXlhIFBhdGVsIHdyb3RlOg0K PiBpaW9fZGV2LT5tbG9jayBpcyB0byBiZSB1c2VkIG9ubHkgYnkgdGhlIElJTyBjb3JlIGZvciBw cm90ZWN0aW5nDQo+IGRldmljZSBtb2RlIGNoYW5nZXMgYmV0d2VlbiBJTkRJT19ESVJFQ1QgYW5k IElORElPX0JVRkZFUi4NCj4gDQo+IFRoaXMgcGF0Y2ggcmVwbGFjZXMgdGhlIHVzZSBvZiBtbG9j ayB3aXRoIHRoZSBhbHJlYWR5IGVzdGFibGlzaGVkDQo+IGJ1Zl9sb2NrIG11dGV4Lg0KPiANCj4g SW50cm9kdWNpbmcgJ3VubG9ja2VkJyBfX2FkZTc3NThfc3BpX3dyaXRlX3JlZ184IGFuZA0KPiBf X2FkZTc3NThfc3BpX3JlYWRfcmVnXzggZnVuY3Rpb25zIHRvIGJlIHVzZWQgYnkgYWRlNzc1OF93 cml0ZV9zYW1wX2ZyZXENCj4gYW5kIGFkZTc3NThfcmVhZF9zYW1wX2ZyZXEgd2hpY2ggYXZvaWRz IG5lc3RlZCBsb2NrcyBhbmQgbWFpbnRhaW5zDQo+IGF0b21pY2l0eSBiZXR3ZWVuIGJ1cyBhbmQg ZGV2aWNlIGZyZXF1ZW5jeSBjaGFuZ2VzLg0KPiANCg0KaGV5LA0KDQpub3RlOiBpIHRvb2sgdGhl IGxpYmVydHkgb2YgcmUtYWRqdXN0aW5nIHRoZSByZXBseSBsaXN0IDsNCmluaXRpYWwgc2NvcGUg c2VlbWVkIHRvbyB3aWRlIDsNCmFkZGVkIEJhcnJ5IFNvbmcsIGFzIGhlJ3MgbGlzdGVkIGFzIHRo ZSBhdXRob3Igb2YgdGhlIGRyaXZlciA7DQoNCmFib3V0IHRoZSBwYXRjaDoNCm92ZXJhbGwgbG9v a3MgZ29vZA0KY29tbWVudHMgaW5saW5lDQoNCj4gU2lnbmVkLW9mZi1ieTogU2hyZWV5YSBQYXRl bCA8c2hyZWV5YS5wYXRlbDIzNDk4QGdtYWlsLmNvbT4NCj4gLS0tDQo+ICBkcml2ZXJzL3N0YWdp bmcvaWlvL21ldGVyL2FkZTc3NTguaCAgICAgIHwgIDIgKy0NCj4gIGRyaXZlcnMvc3RhZ2luZy9p aW8vbWV0ZXIvYWRlNzc1OF9jb3JlLmMgfCA0OSArKysrKysrKysrKysrKysrKysrKysrKy0tLS0t LS0tLQ0KPiAgMiBmaWxlcyBjaGFuZ2VkLCAzNyBpbnNlcnRpb25zKCspLCAxNCBkZWxldGlvbnMo LSkNCj4gDQo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3N0YWdpbmcvaWlvL21ldGVyL2FkZTc3NTgu aCBiL2RyaXZlcnMvc3RhZ2luZy9paW8vbWV0ZXIvYWRlNzc1OC5oDQo+IGluZGV4IDZhZTc4ZDgu LjJkZTgxYjUgMTAwNjQ0DQo+IC0tLSBhL2RyaXZlcnMvc3RhZ2luZy9paW8vbWV0ZXIvYWRlNzc1 OC5oDQo+ICsrKyBiL2RyaXZlcnMvc3RhZ2luZy9paW8vbWV0ZXIvYWRlNzc1OC5oDQo+IEBAIC0x MTEsNyArMTExLDcgQEANCj4gICAqIEB0cmlnOgkJZGF0YSByZWFkeSB0cmlnZ2VyIHJlZ2lzdGVy ZWQgd2l0aCBpaW8NCj4gICAqIEB0eDoJCQl0cmFuc21pdCBidWZmZXINCj4gICAqIEByeDoJCQly ZWNlaXZlIGJ1ZmZlcg0KPiAtICogQGJ1Zl9sb2NrOgkJbXV0ZXggdG8gcHJvdGVjdCB0eCBhbmQg cngNCj4gKyAqIEBidWZfbG9jazoJCW11dGV4IHRvIHByb3RlY3QgdHgsIHJ4LCByZWFkIGFuZCB3 cml0ZSBmcmVxdWVuY3kNCj4gICAqKi8NCj4gIHN0cnVjdCBhZGU3NzU4X3N0YXRlIHsNCj4gIAlz dHJ1Y3Qgc3BpX2RldmljZQkqdXM7DQo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3N0YWdpbmcvaWlv L21ldGVyL2FkZTc3NThfY29yZS5jIGIvZHJpdmVycy9zdGFnaW5nL2lpby9tZXRlci9hZGU3NzU4 X2NvcmUuYw0KPiBpbmRleCA3YjdmZmU1Li43ZjhmOGM0IDEwMDY0NA0KPiAtLS0gYS9kcml2ZXJz L3N0YWdpbmcvaWlvL21ldGVyL2FkZTc3NThfY29yZS5jDQo+ICsrKyBiL2RyaXZlcnMvc3RhZ2lu Zy9paW8vbWV0ZXIvYWRlNzc1OF9jb3JlLmMNCj4gQEAgLTI0LDE3ICsyNCwyNiBAQA0KPiAgI2lu Y2x1ZGUgIm1ldGVyLmgiDQo+ICAjaW5jbHVkZSAiYWRlNzc1OC5oIg0KPiAgDQo+IC1pbnQgYWRl Nzc1OF9zcGlfd3JpdGVfcmVnXzgoc3RydWN0IGRldmljZSAqZGV2LCB1OCByZWdfYWRkcmVzcywg dTggdmFsKQ0KPiArLyogVW5sb2NrZWQgdmVyc2lvbiBvZiBhZGU3NzU4X3NwaV93cml0ZV9yZWdf OCBmdW5jdGlvbiAqLw0KDQp5b3UgY2FuIHByb2JhYmx5IHJlbW92ZSB0aGlzIGNvbW1lbnQNCg0K PiAraW50IF9fYWRlNzc1OF9zcGlfd3JpdGVfcmVnXzgoc3RydWN0IGRldmljZSAqZGV2LCB1OCBy ZWdfYWRkcmVzcywgdTggdmFsKQ0KDQptYXliZSBtYWtlIHRoaXMgc3RhdGljIDsgDQp0aGlzIGZ1 bmN0aW9uIGRvZXMgbm90IHNlZW0gdG8gYmUgZXhwb3J0ZWQgb3V0c2lkZSBvZiB0aGlzIGZpbGUN Cg0KPiAgew0KPiAtCWludCByZXQ7DQo+ICAJc3RydWN0IGlpb19kZXYgKmluZGlvX2RldiA9IGRl dl90b19paW9fZGV2KGRldik7DQo+ICAJc3RydWN0IGFkZTc3NThfc3RhdGUgKnN0ID0gaWlvX3By aXYoaW5kaW9fZGV2KTsNCj4gIA0KPiAtCW11dGV4X2xvY2soJnN0LT5idWZfbG9jayk7DQo+ICAJ c3QtPnR4WzBdID0gQURFNzc1OF9XUklURV9SRUcocmVnX2FkZHJlc3MpOw0KPiAgCXN0LT50eFsx XSA9IHZhbDsNCj4gIA0KPiAtCXJldCA9IHNwaV93cml0ZShzdC0+dXMsIHN0LT50eCwgMik7DQo+ ICsJcmV0dXJuIHNwaV93cml0ZShzdC0+dXMsIHN0LT50eCwgMik7DQo+ICt9DQo+ICsNCj4gK2lu dCBhZGU3NzU4X3NwaV93cml0ZV9yZWdfOChzdHJ1Y3QgZGV2aWNlICpkZXYsIHU4IHJlZ19hZGRy ZXNzLCB1OCB2YWwpDQo+ICt7DQo+ICsJaW50IHJldDsNCj4gKwlzdHJ1Y3QgaWlvX2RldiAqaW5k aW9fZGV2ID0gZGV2X3RvX2lpb19kZXYoZGV2KTsNCj4gKwlzdHJ1Y3QgYWRlNzc1OF9zdGF0ZSAq c3QgPSBpaW9fcHJpdihpbmRpb19kZXYpOw0KPiArDQo+ICsJbXV0ZXhfbG9jaygmc3QtPmJ1Zl9s b2NrKTsNCj4gKwlyZXQgPSBfX2FkZTc3NThfc3BpX3dyaXRlX3JlZ184KGRldiwgcmVnX2FkZHJl c3MsIHZhbCk7DQo+ICAJbXV0ZXhfdW5sb2NrKCZzdC0+YnVmX2xvY2spOw0KPiAgDQo+ICAJcmV0 dXJuIHJldDsNCj4gQEAgLTkxLDcgKzEwMCw4IEBAIHN0YXRpYyBpbnQgYWRlNzc1OF9zcGlfd3Jp dGVfcmVnXzI0KHN0cnVjdCBkZXZpY2UgKmRldiwgdTggcmVnX2FkZHJlc3MsDQo+ICAJcmV0dXJu IHJldDsNCj4gIH0NCj4gIA0KPiAtaW50IGFkZTc3NThfc3BpX3JlYWRfcmVnXzgoc3RydWN0IGRl dmljZSAqZGV2LCB1OCByZWdfYWRkcmVzcywgdTggKnZhbCkNCj4gKy8qIFVubG9ja2VkIHZlcnNp b24gb2YgYWRlNzc1OF9zcGlfcmVhZF9yZWdfMTYgZnVuY3Rpb24gKi8NCnlvdSBjYW4gcHJvYmFi bHkgcmVtb3ZlIHRoaXMgY29tbWVudCBhcyB3ZWxsDQoNCj4gK2ludCBfX2FkZTc3NThfc3BpX3Jl YWRfcmVnXzgoc3RydWN0IGRldmljZSAqZGV2LCB1OCByZWdfYWRkcmVzcywgdTggKnZhbCkNCg0K bWFrZSB0aGlzIHN0YXRpYyBhcyB3ZWxsDQoNCj4gIHsNCj4gIAlzdHJ1Y3QgaWlvX2RldiAqaW5k aW9fZGV2ID0gZGV2X3RvX2lpb19kZXYoZGV2KTsNCj4gIAlzdHJ1Y3QgYWRlNzc1OF9zdGF0ZSAq c3QgPSBpaW9fcHJpdihpbmRpb19kZXYpOw0KPiBAQCAtMTExLDcgKzEyMSw2IEBAIGludCBhZGU3 NzU4X3NwaV9yZWFkX3JlZ184KHN0cnVjdCBkZXZpY2UgKmRldiwgdTggcmVnX2FkZHJlc3MsIHU4 ICp2YWwpDQo+ICAJCX0sDQo+ICAJfTsNCj4gIA0KPiAtCW11dGV4X2xvY2soJnN0LT5idWZfbG9j ayk7DQo+ICAJc3QtPnR4WzBdID0gQURFNzc1OF9SRUFEX1JFRyhyZWdfYWRkcmVzcyk7DQo+ICAJ c3QtPnR4WzFdID0gMDsNCj4gIA0KPiBAQCAtMTI0LDcgKzEzMywxOSBAQCBpbnQgYWRlNzc1OF9z cGlfcmVhZF9yZWdfOChzdHJ1Y3QgZGV2aWNlICpkZXYsIHU4IHJlZ19hZGRyZXNzLCB1OCAqdmFs KQ0KPiAgCSp2YWwgPSBzdC0+cnhbMF07DQo+ICANCj4gIGVycm9yX3JldDoNCj4gKwlyZXR1cm4g cmV0Ow0KPiArfQ0KPiArDQo+ICtpbnQgYWRlNzc1OF9zcGlfcmVhZF9yZWdfOChzdHJ1Y3QgZGV2 aWNlICpkZXYsIHU4IHJlZ19hZGRyZXNzLCB1OCAqdmFsKQ0KPiArew0KPiArCXN0cnVjdCBpaW9f ZGV2ICppbmRpb19kZXYgPSBkZXZfdG9faWlvX2RldihkZXYpOw0KPiArCXN0cnVjdCBhZGU3NzU4 X3N0YXRlICpzdCA9IGlpb19wcml2KGluZGlvX2Rldik7DQo+ICsJaW50IHJldDsNCj4gKw0KPiAr CW11dGV4X2xvY2soJnN0LT5idWZfbG9jayk7DQo+ICsJcmV0ID0gX19hZGU3NzU4X3NwaV9yZWFk X3JlZ184KGRldiwgcmVnX2FkZHJlc3MsIHZhbCk7DQo+ICAJbXV0ZXhfdW5sb2NrKCZzdC0+YnVm X2xvY2spOw0KPiArDQo+ICAJcmV0dXJuIHJldDsNCj4gIH0NCj4gIA0KPiBAQCAtNDcwLDcgKzQ5 MSw3IEBAIHN0YXRpYyBpbnQgYWRlNzc1OF9yZWFkX3NhbXBfZnJlcShzdHJ1Y3QgZGV2aWNlICpk ZXYsIGludCAqdmFsKQ0KPiAgCWludCByZXQ7DQo+ICAJdTggdDsNCj4gIA0KPiAtCXJldCA9IGFk ZTc3NThfc3BpX3JlYWRfcmVnXzgoZGV2LCBBREU3NzU4X1dBVk1PREUsICZ0KTsNCj4gKwlyZXQg PSBfX2FkZTc3NThfc3BpX3JlYWRfcmVnXzgoZGV2LCBBREU3NzU4X1dBVk1PREUsICZ0KTsNCj4g IAlpZiAocmV0KQ0KPiAgCQlyZXR1cm4gcmV0Ow0KPiAgDQo+IEBAIC01MDMsMTQgKzUyNCwxNCBA QCBzdGF0aWMgaW50IGFkZTc3NThfd3JpdGVfc2FtcF9mcmVxKHN0cnVjdCBkZXZpY2UgKmRldiwg aW50IHZhbCkNCj4gIAkJZ290byBvdXQ7DQo+ICAJfQ0KPiAgDQo+IC0JcmV0ID0gYWRlNzc1OF9z cGlfcmVhZF9yZWdfOChkZXYsIEFERTc3NThfV0FWTU9ERSwgJnJlZyk7DQo+ICsJcmV0ID0gX19h ZGU3NzU4X3NwaV9yZWFkX3JlZ184KGRldiwgQURFNzc1OF9XQVZNT0RFLCAmcmVnKTsNCj4gIAlp ZiAocmV0KQ0KPiAgCQlnb3RvIG91dDsNCj4gIA0KPiAgCXJlZyAmPSB+KDUgPDwgMyk7DQo+ICAJ cmVnIHw9IHQgPDwgNTsNCj4gIA0KPiAtCXJldCA9IGFkZTc3NThfc3BpX3dyaXRlX3JlZ184KGRl diwgQURFNzc1OF9XQVZNT0RFLCByZWcpOw0KPiArCXJldCA9IF9fYWRlNzc1OF9zcGlfd3JpdGVf cmVnXzgoZGV2LCBBREU3NzU4X1dBVk1PREUsIHJlZyk7DQo+ICANCj4gIG91dDoNCj4gIAlyZXR1 cm4gcmV0Ow0KPiBAQCAtNTIzLDEyICs1NDQsMTMgQEAgc3RhdGljIGludCBhZGU3NzU4X3JlYWRf cmF3KHN0cnVjdCBpaW9fZGV2ICppbmRpb19kZXYsDQo+ICAJCQkgICAgbG9uZyBtYXNrKQ0KPiAg ew0KPiAgCWludCByZXQ7DQo+ICsJc3RydWN0IGFkZTc3NThfc3RhdGUgKnN0ID0gaWlvX3ByaXYo aW5kaW9fZGV2KTsNCj4gIA0KPiAgCXN3aXRjaCAobWFzaykgew0KPiAgCWNhc2UgSUlPX0NIQU5f SU5GT19TQU1QX0ZSRVE6DQo+IC0JCW11dGV4X2xvY2soJmluZGlvX2Rldi0+bWxvY2spOw0KPiAr CQltdXRleF9sb2NrKCZzdC0+YnVmX2xvY2spOw0KDQpUaGlzIG1heSBiZSBvay4NCkkgZGlkIG5v dCBzZWVtIHRvIGZpbmQgYSBnZW5lcmFsIGNvbnNlbnN1cyBvbiB3aGljaCBsb2NrIHNob3VsZCBi ZSBoZWxkIGhlcmUuDQpTb21lIGRyaXZlcnMgdXNlIGJ1Zl9sb2NrLCBzb21lIHVzZSB0aGUgZGV2 aWNlJ3MgbWxvY2suDQoNCkkgZ3Vlc3Mgc29tZW9uZSBtb3JlIGZhbWlsaWFyIHdpdGggdGhlIElJ TyBmcmFtZXdvcmsgd291bGQgYmUgbW9yZSBzdWl0ZWQgdG8gY29tbWVudCBoZXJlLg0KDQo+ICAJ CXJldCA9IGFkZTc3NThfcmVhZF9zYW1wX2ZyZXEoJmluZGlvX2Rldi0+ZGV2LCB2YWwpOw0KPiAt CQltdXRleF91bmxvY2soJmluZGlvX2Rldi0+bWxvY2spOw0KPiArCQltdXRleF91bmxvY2soJnN0 LT5idWZfbG9jayk7DQo+ICAJCXJldHVybiByZXQ7DQo+ICAJZGVmYXVsdDoNCj4gIAkJcmV0dXJu IC1FSU5WQUw7DQo+IEBAIC01NDIsMTQgKzU2NCwxNSBAQCBzdGF0aWMgaW50IGFkZTc3NThfd3Jp dGVfcmF3KHN0cnVjdCBpaW9fZGV2ICppbmRpb19kZXYsDQo+ICAJCQkgICAgIGludCB2YWwsIGlu dCB2YWwyLCBsb25nIG1hc2spDQo+ICB7DQo+ICAJaW50IHJldDsNCj4gKwlzdHJ1Y3QgYWRlNzc1 OF9zdGF0ZSAqc3QgPSBpaW9fcHJpdihpbmRpb19kZXYpOw0KPiAgDQo+ICAJc3dpdGNoIChtYXNr KSB7DQo+ICAJY2FzZSBJSU9fQ0hBTl9JTkZPX1NBTVBfRlJFUToNCj4gIAkJaWYgKHZhbDIpDQo+ ICAJCQlyZXR1cm4gLUVJTlZBTDsNCj4gLQkJbXV0ZXhfbG9jaygmaW5kaW9fZGV2LT5tbG9jayk7 DQo+ICsJCW11dGV4X2xvY2soJnN0LT5idWZfbG9jayk7DQoNCnNhbWUgaGVyZSBhYm91dCB0aGUg bG9jaw0KDQo+ICAJCXJldCA9IGFkZTc3NThfd3JpdGVfc2FtcF9mcmVxKCZpbmRpb19kZXYtPmRl diwgdmFsKTsNCj4gLQkJbXV0ZXhfdW5sb2NrKCZpbmRpb19kZXYtPm1sb2NrKTsNCj4gKwkJbXV0 ZXhfdW5sb2NrKCZzdC0+YnVmX2xvY2spOw0KPiAgCQlyZXR1cm4gcmV0Ow0KPiAgCWRlZmF1bHQ6 DQo+ICAJCXJldHVybiAtRUlOVkFMOw==