From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:36758 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751077AbcFVLU3 (ORCPT ); Wed, 22 Jun 2016 07:20:29 -0400 Date: Wed, 22 Jun 2016 13:18:30 +0200 From: Pavel Machek To: Sakari Ailus Cc: Sebastian Reichel , Ivaylo Dimitrov , pali.rohar@gmail.com, linux-media@vger.kernel.org Subject: Re: Nokia N900 cameras -- pipeline setup in python (was Re: [RFC PATCH 00/24] Make Nokia N900 cameras working) Message-ID: <20160622111830.GA26788@amd> References: <20160420081427.GZ32125@valkosipuli.retiisi.org.uk> <1461532104-24032-1-git-send-email-ivo.g.dimitrov.75@gmail.com> <20160427030850.GA17034@earth> <20160617164226.GA27876@amd> <20160617171214.GA5830@amd> <20160620205904.GL24980@valkosipuli.retiisi.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160620205904.GL24980@valkosipuli.retiisi.org.uk> Sender: linux-media-owner@vger.kernel.org List-ID: Hi! I tried to capture 1.2Mpix images, then scale them down to 800x600 using hardware... and results were kernel dying. [12552.400146] [] (isp_video_start_streaming) from [] (vb2_start_streaming+0x5c/0x154) [12552.400146] [] (vb2_start_streaming) from [] (vb2_core_streamon+0x104/0x160) [12552.400177] [] (vb2_core_streamon) from [] (isp_video_streamon+0x17c/0x27c) [12552.400207] [] (isp_video_streamon) from [] (v4l_streamon+0x18/0x1c) [12552.400238] [] (v4l_streamon) from [] (__video_do_ioctl+0x24c/0x2e8) [12552.400268] [] (__video_do_ioctl) from [] (video_usercopy+0x110/0x600) [12552.400299] [] (video_usercopy) from [] (v4l2_ioctl+0x98/0xb8) [12552.400329] [] (v4l2_ioctl) from [] (do_vfs_ioctl+0x80/0x948) [12552.400329] [] (do_vfs_ioctl) from [] (SyS_ioctl+0x64/0x74) [12552.400360] [] (SyS_ioctl) from [] (ret_fast_syscall+0x0/0x3c) [12552.400390] ---[ end trace b4627b34449829a7 ]--- [12552.400421] In-band Error seen by MPU at address 0 [12552.400421] ------------[ cut here ]------------ [12552.400451] WARNING: CPU: 0 PID: 3936 at drivers/bus/omap_l3_smx.c:166 omap3_l3_app_irq+0xcc/0x124 [12552.400482] Modules linked in: [12552.400482] CPU: 0 PID: 3936 Comm: mplayer Tainted: G W 4.6.0-177572-g501bb64-dirty #360 [12552.400512] Hardware name: Nokia RX-51 board I did more experiments before, and usually it does not end like this. Usually, when I set up capture with greater resolution than cca 800x600, I get 4 copies of image above each other. If you know how to get images with greater resolution, let me know. Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html