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Sun, 8 Apr 2018 20:39:35 -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 3.18 008/101] xen: avoid type warning in xchg_xen_ulong Thread-Topic: [PATCH AUTOSEL for 3.18 008/101] xen: avoid type warning in xchg_xen_ulong Thread-Index: AQHTz5qheyoJZXptUEKL7GOd7oPAug== Date: Mon, 9 Apr 2018 00:35:16 +0000 Message-ID: <20180409003505.164715-8-alexander.levin@microsoft.com> References: <20180409003505.164715-1-alexander.levin@microsoft.com> In-Reply-To: <20180409003505.164715-1-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;DM5PR2101MB1047;7:xUB9Bzq8UcK0kvJub91KjVgIlH3NN4x/aN9PkF1220Kcvb4g/c7CJWs1OotWmqCw5O3g5yQkPYwWjtaBq6TDrSFCl2SHOMkFQpvfNwcP+AMFJwPFXHvf2MSQ44hFuoc2tnzb7moksv61sjAR663gctOZdua1TtZtAAfTQQPf6JnRs2AJrOxrC5Eo8F7TV/aHPZhGFLwB8ztPKg20fxCWLqG2FPde983K2vV9dizHm01Oh6A5DhAq/rx4ddq6q5gC;20:/qxdkianhCdNwg4aJxyIk/Uc+TbvCzOwra7/s4U9dPyHpo87vmSKz4BgskY1PaB710hAVWQURC+O/RfytNtcC0F/lZPlGifpnpjo1Wnuzo3FaOc5giC3t0xQtqMpUdVvFm6iLSDDrtXbcQrj1v2tSd+gB3hWk+dPASYpqhSPlyE= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 96857811-21e8-474b-9cd1-08d59db25a70 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1047; 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x-microsoft-antispam-message-info: SSnM2CbeHRh/pyGv56xMFTI0Zc0bZ/PWLCDeux2EQZMtZKoKBVczeLY2v1QTdMNvAP57YWyY5E4cdNeiSVy0jEwnkGXXGWExv1QT7CTlqXlNUXBYVnulvD9eSm9xjS0c33uygk4WyrRzXJqnsMd34EsiE/l0dQRr/4xbiOVx/gMeHaeIHTldxGui98GB2Ve3ZpIn/Y0p4DlykLXOjwbedB88Ly408inXKoY7s6DhQQPSuvxM0M6PBzV5F29Aia6n7VwjNPWANO+N7HvBYRTimtP/dmjz5hzpxjL2IW4OfGuzSXSNkl1nu98IstRYqbpCW5ATeEBd0F+1j/LQehcLDViiUE+Bp/adHlNoj+eIf8dKARVa7kEs0NMMjn1hsG0Jv9m67Dnqp7usMfRhM3nNoLci2EKgcDsTvwh+e5xLqc4= 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: 96857811-21e8-474b-9cd1-08d59db25a70 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:35:16.2361 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1047 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 8b1f37bfeeec..b7aadab9b0e8 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