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Thu, 8 Aug 2019 20:52:09 +0000 From: Stephen Douthit To: Tony Luck , Borislav Petkov , Mauro Carvalho Chehab , James Morse CC: Stephen Douthit , "linux-edac@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH] EDAC, pnd2: Fix ioremap() size in dnv_rd_reg() from 64K -> 32K Thread-Topic: [PATCH] EDAC, pnd2: Fix ioremap() size in dnv_rd_reg() from 64K -> 32K Thread-Index: AQHVTiskHjYyDh8ZF0eccCUFKX9IfQ== Date: Thu, 8 Aug 2019 20:52:08 +0000 Message-ID: <20190808205147.25547-1-stephend@silicom-usa.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: BN6PR22CA0041.namprd22.prod.outlook.com (2603:10b6:404:37::27) To VI1PR0402MB2717.eurprd04.prod.outlook.com (2603:10a6:800:b4::11) authentication-results: spf=none (sender IP is ) smtp.mailfrom=stephend@silicom-usa.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.21.0 x-originating-ip: [96.82.2.57] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 6f9bc469-1a39-4154-a4f7-08d71c424744 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(1401327)(2017052603328)(7193020);SRVR:VI1PR0402MB2910; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: silicom-usa.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6f9bc469-1a39-4154-a4f7-08d71c424744 X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Aug 2019 20:52:09.0152 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: c9e326d8-ce47-4930-8612-cc99d3c87ad1 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: ie2srQZfxmyCf9tp+FjceuG8Bu70zNnt7sGDVirnpM0853iWQdeczNgFvaad7fbhylmdJaXmfKQu3pQJ6aRR+gddEYvCmm9IneqFgVZx7uo= X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB2910 Sender: linux-edac-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org BIOS has marked the 32K MCHBAR window as reserved, so when dnv_rd_reg() tries to ioremap() a 64KB region you get warnings like: resource sanity check: requesting [mem 0xfed10000-0xfed1ffff], which spans = more than reserved [mem 0xfed10000-0xfed17fff] caller dnv_rd_reg+0xc8/0x240 [pnd2_edac] mapping multiple BARs ioremap() the correct size on Denverton platforms to get rid of those warnings. Signed-off-by: Stephen Douthit --- drivers/edac/pnd2_edac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c index 903a4f1fadcc..1d16f2ac776e 100644 --- a/drivers/edac/pnd2_edac.c +++ b/drivers/edac/pnd2_edac.c @@ -295,7 +295,7 @@ static int dnv_rd_reg(int port, int off, int op, void *= data, size_t sz, char *na addr +=3D (port << 16); } =20 - base =3D ioremap((resource_size_t)addr, 0x10000); + base =3D ioremap((resource_size_t)addr, 0x8000); if (!base) return -ENODEV; =20 --=20 2.21.0