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Sun, 8 Apr 2018 20:26:41 -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 4.9 017/293] xen: avoid type warning in xchg_xen_ulong Thread-Topic: [PATCH AUTOSEL for 4.9 017/293] xen: avoid type warning in xchg_xen_ulong Thread-Index: AQHTz5jrjSKo4/+nHkeCZpDJhTwqaQ== Date: Mon, 9 Apr 2018 00:23:02 +0000 Message-ID: <20180409002239.163177-17-alexander.levin@microsoft.com> References: <20180409002239.163177-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002239.163177-1-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;DM5PR2101MB0885;7:4EoMWnL7BUroOxFnqdk3p9sybPWRRtp0KgYBbjP62xcuRPqUJIzlPPwacnJe6vyIwPB2N4sAXdpj07iKZMVkSUZ7WbWourxmnFaWOGdqgtBjqpZr0pnsFKmqzJttA3yyhjGNIFhcS9lA7BnB+5TdG9MR1COZnHC+2SMvr7fkH/46aQNd98672muOycbwbOuSOY5EUvX1eV1fB/OSJb2Dw1DW0oR7/Ae/iwxAYQYm2lMb24Sa43fZoA+XalmftbBs;20:2+FV9I/rM19DRKHvRfOZf+dmvzvcg1GifGEKwuxuiAUirUF07Rg4GF+638auNvYwSYVzrv/BRNaMGU4ZbioOK/N0JHWWnj9UZ2wiL1vAa8vkoDVRvntOfLTeCw5RgNgfT3X7ubu8mqY8JpmDsT3hoeh3KvVV77f2hGRVH+zSOzU= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 93eb7150-f20c-462c-dc74-08d59db09014 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0885; 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x-microsoft-antispam-message-info: e2sEBElV2/zcZPcCyWlsRDfGWLuDnIyjaay0y0TEw0OXPjFcSsD1tuHnHyiXXiAVAzn+uEUqMTTclMF+p0xEIr3Qtdv7gPKWeyC1UJ2GP9NbgdyO6ak86XuU7gszxPKgv1tL3sdxj2GSDUAl0/aaX5OKPEt/9JT4SwyuGNqjzH+QWEr+WwMKSrl9LBCh/UBsqXEknhi79umC1p12vG29iizITvYBgso7rWEON3UORjWtLfUy31uJfF9RvQoIEc+aqGLIrhfpMd3MrwnMkBK3fXEkVXRWW3fRnIxe7BGE9bGHd2qXncEcqfMxnwSqEKzMwS6qkcJbotS3i2n980xKMj2DBYNvrZUQrcn6o23TthiUF4/wjaGlwpycNpz96yfaHWaZ088PQVusqXUPBxNJvRR1Gjx7wnh19ta/N4iwxKo= 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: 93eb7150-f20c-462c-dc74-08d59db09014 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:23:02.5810 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0885 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