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Sun, 8 Apr 2018 20:35:01 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Arnd Bergmann , Ian Abbott , Stefano Stabellini , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 010/162] xen: avoid type warning in xchg_xen_ulong Thread-Topic: [PATCH AUTOSEL for 4.4 010/162] xen: avoid type warning in xchg_xen_ulong Thread-Index: AQHTz5mXDb2bsrUJPUi8KsTaKYeItA== Date: Mon, 9 Apr 2018 00:27:50 +0000 Message-ID: <20180409002738.163941-10-alexander.levin@microsoft.com> References: <20180409002738.163941-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002738.163941-1-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;DM5PR2101MB1013;7:2H7+mYJBPMYpxzj5yvZ1CZnlwDqBEnAml/hgq00uw3GzbVVUEzemi9ByQu4C8URfWQPiqLqvg+KhH8rCEEkj89/tXT1eGEGBc9NKSwTySyXMQqGGz0pqQ9weSkoc+SaYv1HxLU8oBZGU/484qiNHpERgcll2TscKlYQgKLKhUtf2+PST4lZ6jpfI6MiN2hFVxTb02VpZuheysha1yUhNK/J8vOqi8CUevabdfjOUkGOVCp24l4EkAv6CR/zNvtuh;20:w7YLome5i3IEwqjaYljn+qBQ8HqY/wgD4kL/KY3E9l/HDL6aUoLUK6A/J5fzt/wP2xqkNGbWJnztDMa0gsKzdRsljMUs6YzwG2zYB76OyZ9deRFDUHnBUxU6l5NJNTou+o9A7CU/EG4n4ERNLOUuoydD+E9omwzURYuW7ZaKrWc= X-MS-Office365-Filtering-Correlation-Id: 86111688-2715-4f9e-2f02-08d59db1b7ea x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(48565401081)(2017052603328)(7193020);SRVR:DM5PR2101MB1013; 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x-microsoft-antispam-message-info: fIre9/sQUixyncW4im2BddJ8jZ7MZIXtio+av/Nhq1QaHDyQ+lYnL0EJXA0G9e2Hvm5/i75npkU7t7nT7324Dz7xdNPKTa+LZcTB0av5xT8taZZLBueemxidEuuusONRYKrpsL/aarzTLmjo1OC40ogGU2LzBu4vbMp8RahKz85jSUSQKcH3kq9BevbcRRx1QsWM20CV2BNCa6NiQBUbJX79558mvfMQFpU2/RxO8jCa8cJRupBc1+qSjroXbk7ei2ZOxMoFQ1wqgQx+3mesOe62d+3l0h08boSLBOIpeV4ieOcBuSds/vEze+8PFwhfW4cctPBK4V+/lZxGEgwMiRgTBkjZGfuXRVGsbqJOacTIyvRuDT+LBh+SI2ECS9txB5uMx1EnBiBxGMTIvsogq3wZ6g0F3wqEBjIoxoB+k5o= 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: 86111688-2715-4f9e-2f02-08d59db1b7ea X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:27:50.3641 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1013 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: Arnd Bergmann [ Upstream commit 9cc91f212111cdcbefa02dcdb7dd443f224bf52c ] The improved type-checking version of container_of() triggers a warning for xchg_xen_ulong, pointing out that 'xen_ulong_t' is unsigned, but atomic64_t contains a signed value: drivers/xen/events/events_2l.c: In function 'evtchn_2l_handle_events': drivers/xen/events/events_2l.c:187:1020: error: call to '__compiletime_asse= rt_187' declared with attribute error: pointer type mismatch in container_o= f() This adds a cast to work around the warning. Cc: Ian Abbott Fixes: 85323a991d40 ("xen: arm: mandate EABI and use generic atomic operati= ons.") Fixes: daa2ac80834d ("kernel.h: handle pointers to arrays better in contain= er_of()") Signed-off-by: Arnd Bergmann Signed-off-by: Stefano Stabellini Reviewed-by: Stefano Stabellini Acked-by: Ian Abbott Signed-off-by: Sasha Levin --- arch/arm/include/asm/xen/events.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/e= vents.h index 71e473d05fcc..620dc75362e5 100644 --- a/arch/arm/include/asm/xen/events.h +++ b/arch/arm/include/asm/xen/events.h @@ -16,7 +16,7 @@ static inline int xen_irqs_disabled(struct pt_regs *regs) return raw_irqs_disabled_flags(regs->ARM_cpsr); } =20 -#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((ptr), \ +#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((long long*)(p= tr),\ atomic64_t, \ counter), (val)) =20 --=20 2.15.1