From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261685AbVGZFhj (ORCPT ); Tue, 26 Jul 2005 01:37:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261697AbVGZFhj (ORCPT ); Tue, 26 Jul 2005 01:37:39 -0400 Received: from rproxy.gmail.com ([64.233.170.199]:40050 "EHLO rproxy.gmail.com") by vger.kernel.org with ESMTP id S261685AbVGZFhh convert rfc822-to-8bit (ORCPT ); Tue, 26 Jul 2005 01:37:37 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=GhPYQxaQgic57EHECCMlwDYXwPhUIFzBIPrkSIQ6d/V+e+yx0Epc6XbUgPXTt9tSLelj9nTLSMFp5NH8XehDup5TcdetXqwen0+TVT+Kat+p4MDuX9Pr89en6VWjKiXaZJVCwlWna/RceFHxXjmovlsvc1qJpX8kw1Gx1rWrHnM= Message-ID: <105c793f050725223733964f55@mail.gmail.com> Date: Tue, 26 Jul 2005 01:37:37 -0400 From: Andrew Haninger Reply-To: Andrew Haninger To: Adrian Bunk Subject: Re: BUG: Yamaha OPL3SA2 does not work with ALSA on 2.6 kernels. Cc: Linux Kernel Mailing List , perex@suse.cz, alsa-devel@alsa-project.org In-Reply-To: <20050725232604.GH3160@stusta.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <105c793f05072507315cfd1878@mail.gmail.com> <20050725232604.GH3160@stusta.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 7/25/05, Adrian Bunk wrote: > Does the OSS driver work in 2.6? I was able to get the OSS module (opl3sa2) installed in 2.6 and I was able to get some nice hiss when doing 'cat /dev/urandom > /dev/dsp'. I used the following modprobe line: modprobe opl3sa2 io=0x370 irq=11 dma=0 dma2=1 mss_io=0x530 isapnp=0 the isapnp=0 part appeared to be required. The following showed up in dmesg upon inserting the OSS module: opl3sa2: Chipset version = 0x7 opl3sa2: Found OPL3-SA3 (YMF715E or YMF719E) However, when I try to rmmod the opl3sa2 module, I get an Oops: Unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c037ae01 *pde = 00000000 Oops: 0002 [#1] PREEMPT Modules linked in: opl3sa2 ad1848 mpu401 sound soundcore vfat fat sd_mod usb_storage lp parport ide_scsi rtc CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00010046 (2.6.12.2) EIP is at wait_for_completion+0x71/0xf0 eax: cca91180 ebx: c52ea000 ecx: c52ebf20 edx: 00000000 esi: c52ea000 edi: cca9117c ebp: c52ebf40 esp: c52ebef4 ds: 007b es: 007b ss: 0068 Process rmmod (pid: 11277, threadinfo=c52ea000 task=c79ce550) Stack: 00000000 c79ce550 c0113cf0 00000000 00000000 c52ea000 c0e899e0 c0209ffe 00000001 c79ce550 c0113cf0 cca91180 00000114 00000001 00000000 cca91174 00000114 00000001 00000000 c52ea000 cca8f964 cca91174 00000000 cca91200 Call Trace: [] default_wake_function+0x0/0x20 [] kobject_put+0x1e/0x30 [] default_wake_function+0x0/0x20 [] cleanup_opl3sa2+0x74/0x8c [opl3sa2] [] sys_delete_module+0x178/0x1b0 [] sys_munmap+0x50/0x80 [] syscall_call+0x7/0xb Code: 00 00 8b 03 c7 45 d4 01 00 00 00 c7 45 bc f0 3c 11 c0 c7 45 dc f0 3c 11 c0 89 45 b8 89 45 d8 8d 47 04 8b 50 04 89 45 e0 89 48 04 <89> 0a 89 55 e4 8d 76 00 8d bc 27 00 00 00 00 8b 03 c7 00 02 00 <6>note: rmmod[11277] exited with preempt_count 1 and now when I try to rmmod the module again, I get: ERROR: Removing 'opl3sa2': Device or resource busy So, yes, given the correct parameters, the OSS module (just like the ALSA module) works with the occasional Oops. I guess the Oopses are acceptable for now; it's the ALSA detection routines that are broken themselves or that are broken by something in the 2.6 kernel (remember that they work fine in 2.4). Thanks. -Andy