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Thu, 7 Nov 2019 15:40:23 +0000 From: Dragan Cvetic To: Markus Elfring , "linux-arm-kernel@lists.infradead.org" , Arnd Bergmann , Derek Kiernan , Greg Kroah-Hartman , Michal Simek CC: LKML , "kernel-janitors@vger.kernel.org" Subject: RE: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation Thread-Topic: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation Thread-Index: AQHVlAp4a7DAmwL3UEy4xr76jpF77qd/2r7A Date: Thu, 7 Nov 2019 15:40:23 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=draganc@xilinx.com; x-originating-ip: [149.199.80.133] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: d1dc1cb4-56ad-4d55-ac23-08d76398cd9a x-ms-traffictypediagnostic: CH2PR02MB6102:|CH2PR02MB6102: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5236; 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charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-Network-Message-Id: d1dc1cb4-56ad-4d55-ac23-08d76398cd9a X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Nov 2019 15:40:23.1329 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: wiC2p8j1VNTLkbXEGFCHp5/+iEsVAPY6w7orqxJ/y1cWnwbCIOf4vCEBbD4VZ5VGz/ObXMEOINZfmRaeuMEflw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR02MB6102 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SEkgTWFya3VzLA0KDQpUaGFua3MgZm9yIHRoZSBuaWNlIHNvbHV0aW9uLA0Kd2UgYXJlIGdvaW5n IHRvIHRlc3QgdGhpcyBjaGFuZ2UgYW5kIGxldCB5b3Uga25vdyBhYm91dCB0aGUgcmVzdWx0Lg0K DQpSZWdhcmRzDQpEcmFnYW4NCg0KDQo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+IEZy b206IE1hcmt1cyBFbGZyaW5nIFttYWlsdG86TWFya3VzLkVsZnJpbmdAd2ViLmRlXQ0KPiBTZW50 OiBUdWVzZGF5IDUgTm92ZW1iZXIgMjAxOSAxODo1NQ0KPiBUbzogbGludXgtYXJtLWtlcm5lbEBs aXN0cy5pbmZyYWRlYWQub3JnOyBBcm5kIEJlcmdtYW5uIDxhcm5kQGFybmRiLmRlPjsgRGVyZWsg S2llcm5hbiA8ZGtpZXJuYW5AeGlsaW54LmNvbT47IERyYWdhbiBDdmV0aWMNCj4gPGRyYWdhbmNA eGlsaW54LmNvbT47IEdyZWcgS3JvYWgtSGFydG1hbiA8Z3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5v cmc+OyBNaWNoYWwgU2ltZWsgPG1pY2hhbHNAeGlsaW54LmNvbT4NCj4gQ2M6IExLTUwgPGxpbnV4 LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc+OyBrZXJuZWwtamFuaXRvcnNAdmdlci5rZXJuZWwub3Jn DQo+IFN1YmplY3Q6IFtQQVRDSCAxLzJdIG1pc2M6IHhpbGlueF9zZGZlYzogVXNlIG1lbWR1cF91 c2VyKCkgcmF0aGVyIHRoYW4gZHVwbGljYXRpbmcgaXRzIGltcGxlbWVudGF0aW9uDQo+IA0KPiBG cm9tOiBNYXJrdXMgRWxmcmluZyA8ZWxmcmluZ0B1c2Vycy5zb3VyY2Vmb3JnZS5uZXQ+DQo+IERh dGU6IFR1ZSwgNSBOb3YgMjAxOSAxOTowOToxNSArMDEwMA0KPiANCj4gUmV1c2UgZXhpc3Rpbmcg ZnVuY3Rpb25hbGl0eSBmcm9tIG1lbWR1cF91c2VyKCkgaW5zdGVhZCBvZiBrZWVwaW5nDQo+IGR1 cGxpY2F0ZSBzb3VyY2UgY29kZS4NCj4gDQo+IEdlbmVyYXRlZCBieTogc2NyaXB0cy9jb2NjaW5l bGxlL2FwaS9tZW1kdXBfdXNlci5jb2NjaQ0KPiANCj4gRml4ZXM6IDIwZWM2MjhlODAwN2VjNzVj MmY4ODRlMDAwMDRmMzllYWI2Mjg5YjUgKCJtaXNjOiB4aWxpbnhfc2RmZWM6IEFkZCBhYmlsaXR5 IHRvIGNvbmZpZ3VyZSBMRFBDIikNCj4gU2lnbmVkLW9mZi1ieTogTWFya3VzIEVsZnJpbmcgPGVs ZnJpbmdAdXNlcnMuc291cmNlZm9yZ2UubmV0Pg0KPiAtLS0NCj4gIGRyaXZlcnMvbWlzYy94aWxp bnhfc2RmZWMuYyB8IDExICsrKy0tLS0tLS0tDQo+ICAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRp b25zKCspLCA4IGRlbGV0aW9ucygtKQ0KPiANCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbWlzYy94 aWxpbnhfc2RmZWMuYyBiL2RyaXZlcnMvbWlzYy94aWxpbnhfc2RmZWMuYw0KPiBpbmRleCAxMTgz NTk2OWU5ODIuLmE2MjJmY2Y0OTU0YSAxMDA2NDQNCj4gLS0tIGEvZHJpdmVycy9taXNjL3hpbGlu eF9zZGZlYy5jDQo+ICsrKyBiL2RyaXZlcnMvbWlzYy94aWxpbnhfc2RmZWMuYw0KPiBAQCAtNjQ5 LDE0ICs2NDksOSBAQCBzdGF0aWMgaW50IHhzZGZlY19hZGRfbGRwYyhzdHJ1Y3QgeHNkZmVjX2Rl diAqeHNkZmVjLCB2b2lkIF9fdXNlciAqYXJnKQ0KPiAgCXN0cnVjdCB4c2RmZWNfbGRwY19wYXJh bXMgKmxkcGM7DQo+ICAJaW50IHJldCwgbjsNCj4gDQo+IC0JbGRwYyA9IGt6YWxsb2Moc2l6ZW9m KCpsZHBjKSwgR0ZQX0tFUk5FTCk7DQo+IC0JaWYgKCFsZHBjKQ0KPiAtCQlyZXR1cm4gLUVOT01F TTsNCj4gLQ0KPiAtCWlmIChjb3B5X2Zyb21fdXNlcihsZHBjLCBhcmcsIHNpemVvZigqbGRwYykp KSB7DQo+IC0JCXJldCA9IC1FRkFVTFQ7DQo+IC0JCWdvdG8gZXJyX291dDsNCj4gLQl9DQo+ICsJ bGRwYyA9IG1lbWR1cF91c2VyKGFyZywgc2l6ZW9mKCpsZHBjKSk7DQo+ICsJaWYgKElTX0VSUihs ZHBjKSkNCj4gKwkJcmV0dXJuIFBUUl9FUlIobGRwYyk7DQo+IA0KPiAgCWlmICh4c2RmZWMtPmNv bmZpZy5jb2RlID09IFhTREZFQ19UVVJCT19DT0RFKSB7DQo+ICAJCXJldCA9IC1FSU87DQo+IC0t DQo+IDIuMjQuMA0KDQo= From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dragan Cvetic Date: Thu, 07 Nov 2019 15:40:23 +0000 Subject: RE: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Markus Elfring , "linux-arm-kernel@lists.infradead.org" , Arnd Bergmann , Derek Kiernan , Greg Kroah-Hartman , Michal Simek Cc: "kernel-janitors@vger.kernel.org" , LKML SEkgTWFya3VzLA0KDQpUaGFua3MgZm9yIHRoZSBuaWNlIHNvbHV0aW9uLA0Kd2UgYXJlIGdvaW5n IHRvIHRlc3QgdGhpcyBjaGFuZ2UgYW5kIGxldCB5b3Uga25vdyBhYm91dCB0aGUgcmVzdWx0Lg0K DQpSZWdhcmRzDQpEcmFnYW4NCg0KDQo+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tDQo+IEZy b206IE1hcmt1cyBFbGZyaW5nIFttYWlsdG86TWFya3VzLkVsZnJpbmdAd2ViLmRlXQ0KPiBTZW50 OiBUdWVzZGF5IDUgTm92ZW1iZXIgMjAxOSAxODo1NQ0KPiBUbzogbGludXgtYXJtLWtlcm5lbEBs aXN0cy5pbmZyYWRlYWQub3JnOyBBcm5kIEJlcmdtYW5uIDxhcm5kQGFybmRiLmRlPjsgRGVyZWsg S2llcm5hbiA8ZGtpZXJuYW5AeGlsaW54LmNvbT47IERyYWdhbiBDdmV0aWMNCj4gPGRyYWdhbmNA eGlsaW54LmNvbT47IEdyZWcgS3JvYWgtSGFydG1hbiA8Z3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5v cmc+OyBNaWNoYWwgU2ltZWsgPG1pY2hhbHNAeGlsaW54LmNvbT4NCj4gQ2M6IExLTUwgPGxpbnV4 LWtlcm5lbEB2Z2VyLmtlcm5lbC5vcmc+OyBrZXJuZWwtamFuaXRvcnNAdmdlci5rZXJuZWwub3Jn DQo+IFN1YmplY3Q6IFtQQVRDSCAxLzJdIG1pc2M6IHhpbGlueF9zZGZlYzogVXNlIG1lbWR1cF91 c2VyKCkgcmF0aGVyIHRoYW4gZHVwbGljYXRpbmcgaXRzIGltcGxlbWVudGF0aW9uDQo+IA0KPiBG cm9tOiBNYXJrdXMgRWxmcmluZyA8ZWxmcmluZ0B1c2Vycy5zb3VyY2Vmb3JnZS5uZXQ+DQo+IERh dGU6IFR1ZSwgNSBOb3YgMjAxOSAxOTowOToxNSArMDEwMA0KPiANCj4gUmV1c2UgZXhpc3Rpbmcg ZnVuY3Rpb25hbGl0eSBmcm9tIG1lbWR1cF91c2VyKCkgaW5zdGVhZCBvZiBrZWVwaW5nDQo+IGR1 cGxpY2F0ZSBzb3VyY2UgY29kZS4NCj4gDQo+IEdlbmVyYXRlZCBieTogc2NyaXB0cy9jb2NjaW5l bGxlL2FwaS9tZW1kdXBfdXNlci5jb2NjaQ0KPiANCj4gRml4ZXM6IDIwZWM2MjhlODAwN2VjNzVj MmY4ODRlMDAwMDRmMzllYWI2Mjg5YjUgKCJtaXNjOiB4aWxpbnhfc2RmZWM6IEFkZCBhYmlsaXR5 IHRvIGNvbmZpZ3VyZSBMRFBDIikNCj4gU2lnbmVkLW9mZi1ieTogTWFya3VzIEVsZnJpbmcgPGVs ZnJpbmdAdXNlcnMuc291cmNlZm9yZ2UubmV0Pg0KPiAtLS0NCj4gIGRyaXZlcnMvbWlzYy94aWxp bnhfc2RmZWMuYyB8IDExICsrKy0tLS0tLS0tDQo+ICAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRp b25zKCspLCA4IGRlbGV0aW9ucygtKQ0KPiANCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbWlzYy94 aWxpbnhfc2RmZWMuYyBiL2RyaXZlcnMvbWlzYy94aWxpbnhfc2RmZWMuYw0KPiBpbmRleCAxMTgz NTk2OWU5ODIuLmE2MjJmY2Y0OTU0YSAxMDA2NDQNCj4gLS0tIGEvZHJpdmVycy9taXNjL3hpbGlu eF9zZGZlYy5jDQo+ICsrKyBiL2RyaXZlcnMvbWlzYy94aWxpbnhfc2RmZWMuYw0KPiBAQCAtNjQ5 LDE0ICs2NDksOSBAQCBzdGF0aWMgaW50IHhzZGZlY19hZGRfbGRwYyhzdHJ1Y3QgeHNkZmVjX2Rl diAqeHNkZmVjLCB2b2lkIF9fdXNlciAqYXJnKQ0KPiAgCXN0cnVjdCB4c2RmZWNfbGRwY19wYXJh bXMgKmxkcGM7DQo+ICAJaW50IHJldCwgbjsNCj4gDQo+IC0JbGRwYyA9IGt6YWxsb2Moc2l6ZW9m KCpsZHBjKSwgR0ZQX0tFUk5FTCk7DQo+IC0JaWYgKCFsZHBjKQ0KPiAtCQlyZXR1cm4gLUVOT01F TTsNCj4gLQ0KPiAtCWlmIChjb3B5X2Zyb21fdXNlcihsZHBjLCBhcmcsIHNpemVvZigqbGRwYykp KSB7DQo+IC0JCXJldCA9IC1FRkFVTFQ7DQo+IC0JCWdvdG8gZXJyX291dDsNCj4gLQl9DQo+ICsJ bGRwYyA9IG1lbWR1cF91c2VyKGFyZywgc2l6ZW9mKCpsZHBjKSk7DQo+ICsJaWYgKElTX0VSUihs ZHBjKSkNCj4gKwkJcmV0dXJuIFBUUl9FUlIobGRwYyk7DQo+IA0KPiAgCWlmICh4c2RmZWMtPmNv bmZpZy5jb2RlID09IFhTREZFQ19UVVJCT19DT0RFKSB7DQo+ICAJCXJldCA9IC1FSU87DQo+IC0t DQo+IDIuMjQuMA0KDQo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6074CC5DF60 for ; 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Thu, 7 Nov 2019 15:40:23 +0000 From: Dragan Cvetic To: Markus Elfring , "linux-arm-kernel@lists.infradead.org" , Arnd Bergmann , Derek Kiernan , Greg Kroah-Hartman , Michal Simek Subject: RE: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation Thread-Topic: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation Thread-Index: AQHVlAp4a7DAmwL3UEy4xr76jpF77qd/2r7A Date: Thu, 7 Nov 2019 15:40:23 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=draganc@xilinx.com; x-originating-ip: [149.199.80.133] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: d1dc1cb4-56ad-4d55-ac23-08d76398cd9a x-ms-traffictypediagnostic: CH2PR02MB6102:|CH2PR02MB6102: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5236; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org HI Markus, Thanks for the nice solution, we are going to test this change and let you know about the result. Regards Dragan > -----Original Message----- > From: Markus Elfring [mailto:Markus.Elfring@web.de] > Sent: Tuesday 5 November 2019 18:55 > To: linux-arm-kernel@lists.infradead.org; Arnd Bergmann ; Derek Kiernan ; Dragan Cvetic > ; Greg Kroah-Hartman ; Michal Simek > Cc: LKML ; kernel-janitors@vger.kernel.org > Subject: [PATCH 1/2] misc: xilinx_sdfec: Use memdup_user() rather than duplicating its implementation > > From: Markus Elfring > Date: Tue, 5 Nov 2019 19:09:15 +0100 > > Reuse existing functionality from memdup_user() instead of keeping > duplicate source code. > > Generated by: scripts/coccinelle/api/memdup_user.cocci > > Fixes: 20ec628e8007ec75c2f884e00004f39eab6289b5 ("misc: xilinx_sdfec: Add ability to configure LDPC") > Signed-off-by: Markus Elfring > --- > drivers/misc/xilinx_sdfec.c | 11 +++-------- > 1 file changed, 3 insertions(+), 8 deletions(-) > > diff --git a/drivers/misc/xilinx_sdfec.c b/drivers/misc/xilinx_sdfec.c > index 11835969e982..a622fcf4954a 100644 > --- a/drivers/misc/xilinx_sdfec.c > +++ b/drivers/misc/xilinx_sdfec.c > @@ -649,14 +649,9 @@ static int xsdfec_add_ldpc(struct xsdfec_dev *xsdfec, void __user *arg) > struct xsdfec_ldpc_params *ldpc; > int ret, n; > > - ldpc = kzalloc(sizeof(*ldpc), GFP_KERNEL); > - if (!ldpc) > - return -ENOMEM; > - > - if (copy_from_user(ldpc, arg, sizeof(*ldpc))) { > - ret = -EFAULT; > - goto err_out; > - } > + ldpc = memdup_user(arg, sizeof(*ldpc)); > + if (IS_ERR(ldpc)) > + return PTR_ERR(ldpc); > > if (xsdfec->config.code == XSDFEC_TURBO_CODE) { > ret = -EIO; > -- > 2.24.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel