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Sat, 3 Mar 2018 18:42:23 -0500 Received: from mail-by2nam03on0119.outbound.protection.outlook.com ([104.47.42.119]:12016 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934013AbeCCWex (ORCPT ); Sat, 3 Mar 2018 17:34:53 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Liam Beguin , Sylvain Lemieux , Vladimir Zapolskiy , Russell King , Bartlomiej Zolnierkiewicz , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 127/219] video: ARM CLCD: fix dma allocation size Thread-Topic: [PATCH AUTOSEL for 4.9 127/219] video: ARM CLCD: fix dma allocation size Thread-Index: AQHTsz8MLcrdqcxaNUaaJAEsZXsgYA== Date: Sat, 3 Mar 2018 22:29:09 +0000 Message-ID: <20180303222716.26640-127-alexander.levin@microsoft.com> References: <20180303222716.26640-1-alexander.levin@microsoft.com> In-Reply-To: <20180303222716.26640-1-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;MW2PR2101MB1068;7:GMvY4eOVs3gZTyXqx05L8rRjwFz/FcwWqmb1VZ4v/sfAKOG1BlC7IyAhnSsNzybbJ9PZvhItGojgs0IETk1WUR9PJDOONHtIviC3+niLH29SjVQCyC4/NZGcvtTEtMydp7iAjU6pB8KenRuq9zUYVNNOyxU1IRz4bJWwgy0xsPx2t3XbpSJgQD3CFGgtooSnGLnAaza5h3xYD3drrEi1D85fhBwL0je428inTs6me3AuUv6nXNV+VCxBvpSh/2nY x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 330ae9a3-e0e5-4c6f-e222-08d58156f7da x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(48565401081)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:MW2PR2101MB1068; 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x-microsoft-antispam-message-info: Qg7JLPeMcBZ1/YJ0AjAZzhsO5izupQBNc9NSmF103vAFgj37YFhVZP43UVgj2Mggoit3rQNVqa8NtyuY9QEWREoUWJhNdiXszo1Et0HVoEEWjhduFHl9aw9pJyYSanCI7p4NbUvALIFcuaBb9wg3aT5YcVwcQ8JxgK4hKgEpECo= 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: 330ae9a3-e0e5-4c6f-e222-08d58156f7da X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2018 22:29:09.9632 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW2PR2101MB1068 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: Liam Beguin [ Upstream commit 9a1c779e6b06855e41099caa6f15b3b584dfa88c ] This patch forces the frambuffer size to be aligned on kernel pages. During the board startup, the splash screed did appear; the "ts_test" program or our application were not able to start. The following error message was reported: error: failed to map framebuffer device to memory. LinuxFB: driver cannot connect The issue was discovered, on the LPC32xx platform, during the migration of the LCD definition from the board file to the device tree. Signed-off-by: Liam Beguin Signed-off-by: Sylvain Lemieux Cc: Vladimir Zapolskiy Cc: Russell King Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Sasha Levin --- drivers/video/fbdev/amba-clcd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clc= d.c index ec2671d98abc..89880b70cc28 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -892,8 +892,8 @@ static int clcdfb_of_dma_setup(struct clcd_fb *fb) if (err) return err; =20 - framesize =3D fb->panel->mode.xres * fb->panel->mode.yres * - fb->panel->bpp / 8; + framesize =3D PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres * + fb->panel->bpp / 8); fb->fb.screen_base =3D dma_alloc_coherent(&fb->dev->dev, framesize, &dma, GFP_KERNEL); if (!fb->fb.screen_base) --=20 2.14.1