Re: videodev: Unknown symbol i2c_unregister_device (in kernels older than 2.6.26)
Mauro Carvalho Chehab wrote: Em Mon, 25 May 2009 09:10:17 +1000 Matt Doran matt.do...@papercut.com escreveu: Hi there, I tried using the latest v4l code on an Mythtv box running 2.6.20, but the v4l videodev module fails to load with the following warnings: videodev: Unknown symbol i2c_unregister_device v4l2_common: Unknown symbol v4l2_device_register_subdev It seems the i2c_unregister_device function was added in 2.6.26. References to this function in v4l2-common.c are enclosed in an ifdef like: #if LINUX_VERSION_CODE = KERNEL_VERSION(2, 6, 26) However in v4l2_device_unregister() in v4l2-device.c, there is a reference to i2c_unregister_device without any ifdefs. I am running a pretty old kernel, but I'd guess anyone running 2.6.25 or earlier will have this problem. It seems this code was added by Mauro 3 weeks ago in this rev: http://linuxtv.org/hg/v4l-dvb/rev/87afa7a4ccdf I've just applied a patch at the tree that should fix this issue. It adds several tests and the code, but, hopefully, it should be possible even to use the IR's with kernels starting from 2.6.16. Thanks Mauro. I've recompiled all drivers without compile error and I've been using everything for a few days now and it all works great. Thanks again! Matt -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: videodev: Unknown symbol i2c_unregister_device (in kernels older than 2.6.26)
Andy Walls wrote: On Sun, 2009-05-24 at 20:52 -0400, David Ward wrote: On 05/24/2009 07:10 PM, Matt Doran wrote: Hi there, I tried using the latest v4l code on an Mythtv box running 2.6.20, but the v4l videodev module fails to load with the following warnings: videodev: Unknown symbol i2c_unregister_device v4l2_common: Unknown symbol v4l2_device_register_subdev It seems the i2c_unregister_device function was added in 2.6.26. References to this function in v4l2-common.c are enclosed in an ifdef like: #if LINUX_VERSION_CODE = KERNEL_VERSION(2, 6, 26) However in v4l2_device_unregister() in v4l2-device.c, there is a reference to i2c_unregister_device without any ifdefs. I am running a pretty old kernel, but I'd guess anyone running 2.6.25 or earlier will have this problem. It seems this code was added by Mauro 3 weeks ago in this rev: http://linuxtv.org/hg/v4l-dvb/rev/87afa7a4ccdf I have been seeing the errors compiling adv7343.c and ths7303.c under 2.6.24 as well. Andy Walls and Chaithrika Subrahmanya had written patches for those two modules respectively, but there were some comments during the review of the patches, so I think they are still being worked on. Well, just to manage expectations: I am not working on this. I do not advise waiting for something from me. ;) As an end user, you work-around is to use make menuconfig (or whatever) as Matt did: disable the modules that aren't compiling on older kernels. I agree, but the main problem I raise is the use of i2c_unregister_device in the main v4l module on Linux kernels that don't support it. Regards, Matt -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
videodev: Unknown symbol i2c_unregister_device (in kernels older than 2.6.26)
Hi there, I tried using the latest v4l code on an Mythtv box running 2.6.20, but the v4l videodev module fails to load with the following warnings: videodev: Unknown symbol i2c_unregister_device v4l2_common: Unknown symbol v4l2_device_register_subdev It seems the i2c_unregister_device function was added in 2.6.26. References to this function in v4l2-common.c are enclosed in an ifdef like: #if LINUX_VERSION_CODE = KERNEL_VERSION(2, 6, 26) However in v4l2_device_unregister() in v4l2-device.c, there is a reference to i2c_unregister_device without any ifdefs. I am running a pretty old kernel, but I'd guess anyone running 2.6.25 or earlier will have this problem. It seems this code was added by Mauro 3 weeks ago in this rev: http://linuxtv.org/hg/v4l-dvb/rev/87afa7a4ccdf I also had some other compile problems, but don't have all the details (sorry!). I had to disable the following drivers to get it to compile: * CONFIG_VIDEO_PVRUSB2 * CONFIG_VIDEO_THS7303 * CONFIG_VIDEO_ADV7343 * CONFIG_DVB_SIANO_SMS1XXX Regards, Matt -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: videodev: Unknown symbol i2c_unregister_device (in kernels older than 2.6.26)
David Ward wrote: On 05/24/2009 07:10 PM, Matt Doran wrote: Hi there, I tried using the latest v4l code on an Mythtv box running 2.6.20, but the v4l videodev module fails to load with the following warnings: videodev: Unknown symbol i2c_unregister_device v4l2_common: Unknown symbol v4l2_device_register_subdev Matt, I checked out v4l-dvb today and am using it under 2.6.24 and so far so good. When did the error appear -- when you were trying to load the module? The error appeared when trying to load the module at boot time for my saa7134 based tuner card. This card would no longer work after installing the latest v4l code, however another tuner card continued to work.Maybe because this the saa7134 card is an I2C based card and the other is USB based?? (but this is all a bit over my head). I basically just commented out the i2c_unregister_device function in v4l2-device.c, recompiled and everything started working. :)I don't know the implication of removing this, so I didn't submit a patch ... I thought I'd leave that to the experts. I have been seeing the errors compiling adv7343.c and ths7303.c under 2.6.24 as well. Andy Walls and Chaithrika Subrahmanya had written patches for those two modules respectively, but there were some comments during the review of the patches, so I think they are still being worked on. Great, thanks for letting me know. It's not a showstopper, but it's a pain repeatedly going through the reconfigure/compile/error loop each time you encounter a new compiler error. :)I'm just not game to upgrade the kernel on my mythtv box ... it took a long time to get stable, and I don't want to go there again. :PI'm recompiling v4l because I added a new tuner card. Matt -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
