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Thu, 8 Mar 2018 00:05:19 -0500 Received: from mail-bl2nam02on0126.outbound.protection.outlook.com ([104.47.38.126]:13526 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966189AbeCHFFQ (ORCPT ); Thu, 8 Mar 2018 00:05:16 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Hans de Goede , "rtc-linux@googlegroups.com" , "alexandre.belloni@free-electrons.com" , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 013/101] x86: i8259: export legacy_pic symbol Thread-Topic: [PATCH AUTOSEL for 4.4 013/101] x86: i8259: export legacy_pic symbol Thread-Index: AQHTtpp+51lYHO0ZJEilOihUsHtEDg== Date: Thu, 8 Mar 2018 05:01:18 +0000 Message-ID: <20180308050023.8548-13-alexander.levin@microsoft.com> References: <20180308050023.8548-1-alexander.levin@microsoft.com> In-Reply-To: <20180308050023.8548-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0727;20:Y+OUmmwR+rych+FuVIQ1pwSOHYuw8maS5jvYp7b620NQCmd2Uxey4ggoAiQCrI9ytaKwTjeL2671fSKdwzCips+gKwOuy3UbrmX1+9sqRRqxZJj7GQ+aic+K88cKOta/UZeXFRDobdXyWcutP3CX68DrVPyqYR6nfiIHrgEBXK8= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: a3a441a7-cc73-436d-ff9f-08d584b22a4a x-microsoft-antispam: UriScan:(215639381216008);BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0727; 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x-microsoft-antispam-message-info: +Bcotdq7/mtFfU57q0RbsfapN/fajbjXgbG2ehwMu/aA5joBDAMfftR4XQAEvukfTHysTyJXDatIzRVcmUPqyhnT7pS2UajdVaBOdNGRreLE+4Nz31O2x+f8Fg4Vygr4TdztklduPb+9ik+hRMzMq6kJlemQWzreZIVZWJbD6D4hQCU949GDbUoGellQGfu6r2WRSfR64nr39HwQKSDJX3aKH1ZYvo5D/Za8vigBoD7NJTXMOr7Rxsh5CFSnBt7WSULshHfM6TyV5Sbt6yiUWrHEtaP95rpQI0BV2C8AG9bjXsjO3HdjMELSyt1wYRMXJuj4BsCqSe9qWHUoVKctgQ== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: a3a441a7-cc73-436d-ff9f-08d584b22a4a X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Mar 2018 05:01:18.5880 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0727 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Hans de Goede [ Upstream commit 7ee06cb2f840a96be46233181ed4557901a74385 ] The classic PC rtc-coms driver has a workaround for broken ACPI device nodes for it which lack an irq resource. This workaround used to unconditionally hardcode the irq to 8 in these cases. This was causing irq conflict problems on systems without a legacy-pic so a recent patch added an if (nr_legacy_irqs()) guard to the workaround to avoid this irq conflict. nr_legacy_irqs() uses the legacy_pic symbol under the hood causing an undefined symbol error if the rtc-cmos code is build as a module. This commit exports the legacy_pic symbol to fix this. Cc: rtc-linux@googlegroups.com Cc: alexandre.belloni@free-electrons.com Signed-off-by: Hans de Goede Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- arch/x86/kernel/i8259.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c index be22f5a2192e..4e3b8a587c88 100644 --- a/arch/x86/kernel/i8259.c +++ b/arch/x86/kernel/i8259.c @@ -418,6 +418,7 @@ struct legacy_pic default_legacy_pic =3D { }; =20 struct legacy_pic *legacy_pic =3D &default_legacy_pic; +EXPORT_SYMBOL(legacy_pic); =20 static int __init i8259A_init_ops(void) { --=20 2.14.1