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Sun, 8 Apr 2018 20:27:37 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Bjorn Helgaas , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 055/293] efi/fb: Correct PCI_STD_RESOURCE_END usage Thread-Topic: [PATCH AUTOSEL for 4.9 055/293] efi/fb: Correct PCI_STD_RESOURCE_END usage Thread-Index: AQHTz5j+Dbj0nrvKWkm9X434TlRs/g== Date: Mon, 9 Apr 2018 00:23:32 +0000 Message-ID: <20180409002239.163177-55-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;DM5PR2101MB0871;7:aZUgbJ1Pwi5theUf2ZXpEF/nnBB8udTmUh/9P90FOpTL3Nr8k+NDbWIHo9tv0vuilby+rqSgXEqQhlJELKaDFMPMCU6BVqYrll9nuB5XodB9vHXWY1epa8hueY0eV8TkRG4L/OgSsS2ymHB60bksilj04mGv5TjeWY7MkRKMm0efRfVv+9xbAJrmvaFcF42N+izHdeXJjoVrVzNjReGi4LmnkEp74HBwdg6UDMKVSCwOmNmh5OE0+JKalkVqRuTp;20:UMNG0N7n2sr8yHZrQGIaRXyi/IVKPJy/seNjiokqN0H6czWcBShKL/V6h3QiAAwVpnB/YIjGQKCwQYyngDOteH6f0S6BhO+hlYj2Npb2BHNvocTzfS7vz95AD5Rjjl6OO6woJIOJ0t5imXqiSLAuTqvhco7ax2jgXgn7oAqZeiw= X-MS-Office365-Filtering-Correlation-Id: 4f8fc30e-0ac5-423b-a3a8-08d59db0af96 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:DM5PR2101MB0871; 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x-microsoft-antispam-message-info: 0K+NAZutomCaxLm+JDgiAIL1bzjSaUwqEHaqdKQx5kJIr/63KkjU38r5DFbWTdapV8qK7t0uz5K9N9uiLCMh/tdhiX4yajvL7D+5rnzH/nKCjsH+Zx2LAuUFQAhDk1xEaunXez4aeuKpRCp3nv6jNSpm55fpXBitN2D6+oHTiWkkhdB2K4qIGxaNuYw1sWN3g2F9mM31NVYG+pJH7VaCVduBchAEbwy1Jiuj1hM8M7VqYiINC/guqZJ9O/vjtGjJmB20PworEz0MjILw3nwtfLS6E0N29t8SP+FQV0J47k7GhxE9rQK3B/WdS/AuSYiFKvYAwGYEJULyeF+PactsV0hyJ/YpvN4v8KSGrpMPTMU2gV3NnwW7mv/nFWBvq/9rvLBtU/aKv3N3l67AKZJVxr+9Awv7RW0VdinIw1a3Bbo= 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: 4f8fc30e-0ac5-423b-a3a8-08d59db0af96 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:23:32.8311 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0871 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: Bjorn Helgaas [ Upstream commit 92a16c86299c64f58f320e491977408ba31b8c3c ] PCI_STD_RESOURCE_END is (confusingly) the index of the last valid BAR, not the *number* of BARs. To iterate through all possible BARs, we need to include PCI_STD_RESOURCE_END. Fixes: 55d728a40d36 ("efi/fb: Avoid reconfiguration of BAR that covers the = framebuffer") Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin --- drivers/video/fbdev/efifb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index 6f2e729a308f..f4b6d063a4b7 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -375,7 +375,7 @@ static void efifb_fixup_resources(struct pci_dev *dev) if (!base) return; =20 - for (i =3D 0; i < PCI_STD_RESOURCE_END; i++) { + for (i =3D 0; i <=3D PCI_STD_RESOURCE_END; i++) { struct resource *res =3D &dev->resource[i]; =20 if (!(res->flags & IORESOURCE_MEM)) --=20 2.15.1