From mboxrd@z Thu Jan 1 00:00:00 1970 From: Valentin Longchamp Subject: Re: [PATCH 2/4 v8] i.MX31: Image Processing Unit DMA and IRQ drivers Date: Fri, 23 Jan 2009 12:22:50 +0100 Message-ID: <4979A88A.5010102@epfl.ch> References: <4978C01B.8080707@epfl.ch> <4978CD75.70203@epfl.ch> <49798E4A.4030709@epfl.ch> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sfi-mx-2.v28.ch3.sourceforge.com ([172.29.28.122] helo=mx.sourceforge.net) by 335xhf1.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1LQK7m-00052G-0m for linux-fbdev-devel@lists.sourceforge.net; Fri, 23 Jan 2009 11:22:58 +0000 Received: from smtp0.epfl.ch ([128.178.224.219]) by 72vjzd1.ch3.sourceforge.com with smtp (Exim 4.69) id 1LQK7j-00071r-Jo for linux-fbdev-devel@lists.sourceforge.net; Fri, 23 Jan 2009 11:22:57 +0000 In-Reply-To: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Guennadi Liakhovetski Cc: "linux-fbdev-devel@lists.sourceforge.net" , Dan Williams , "linux-arm-kernel@lists.arm.linux.org.uk" , Longchamp Valentin Guennadi Liakhovetski wrote: > On Fri, 23 Jan 2009, Valentin Longchamp wrote: >> So the devices are registered fine. My problem is that the driver is not >> registered for me: This should be done by the subsys_initcall but >> ipu_init is never called. > > Are you sure you have CONFIG_MX3_IPU=y?... sorry, I don't see any other > possibility why a subsys_initcall() would not be called. You can also > check if it's being compiled and linked, and if you do > > arm-linux-objdump -Dr vmlinux |grep ipu_init > > you should see something like > > c0014c94 : > c0014c94: e1a0c00d mov ip, sp > -- > c0019c70 <__initcall_ipu_init4>: > c0019c70: c0014c94 mulgt r1, r4, ip > Well I have all of them ... Taht's why I really don't understand what's going on. However I don't have the same asm instruction for the initcall: c00192b4 <__initcall_ipu_init4>: c00192b4: c00141e8 .word 0xc00141e8 But that's the address of my ipu_init c00141e8 : c00141e8: e1a0c00d mov ip, sp c00141ec: e92dd800 push {fp, ip, lr, pc} c00141f0: e24cb004 sub fp, ip, #4 ; 0x4 I think something is working badly with the initcall (subsys). Has someone already experienced something similar ? Thanks Val -- Valentin Longchamp, PhD Student, EPFL-STI-LSRO1 valentin.longchamp@epfl.ch, Phone: +41216937827 http://people.epfl.ch/valentin.longchamp MEA3485, Station 9, CH-1015 Lausanne ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword