Re: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 12-06-03 05:01 PM, Antti Palosaari wrote: That firmware downloading patch is done top of my new dvb-usb development tree. I have converted very limited set of drivers for that tree, af9015, au6610, ec168 and anysee (and those are only on my local hard disk). I tried to backport patch for the current dvb-usb but I ran many problems and gave up. Looks like it is almost impossible to convert old dvb-usb without big changes... So what driver you are using? I'm using the hvr-950q per https://bugzilla.kernel.org/show_bug.cgi?id=43145 and https://bugzilla.kernel.org/show_bug.cgi?id=43146. It is possible I can convert your driver too and then it is possible to test. Great. Ideally it would be great to get this backported and applied to the linux 3.2.0 release stream. Cheers, b. signature.asc Description: OpenPGP digital signature
Re: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On Mon, Jun 4, 2012 at 9:32 AM, Brian J. Murrell br...@interlinx.bc.ca wrote: On 12-06-03 05:01 PM, Antti Palosaari wrote: That firmware downloading patch is done top of my new dvb-usb development tree. I have converted very limited set of drivers for that tree, af9015, au6610, ec168 and anysee (and those are only on my local hard disk). I tried to backport patch for the current dvb-usb but I ran many problems and gave up. Looks like it is almost impossible to convert old dvb-usb without big changes... So what driver you are using? I'm using the hvr-950q per https://bugzilla.kernel.org/show_bug.cgi?id=43145 and https://bugzilla.kernel.org/show_bug.cgi?id=43146. It is possible I can convert your driver too and then it is possible to test. Great. Ideally it would be great to get this backported and applied to the linux 3.2.0 release stream. The 950q doesn't use the dvb-usb framework (nor does it load the firmware at init). Whatever is going on there is completely unrelated to what Antti is debugging. Devin -- Devin J. Heitmueller - Kernel Labs http://www.kernellabs.com -- 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: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 12-06-04 09:35 AM, Devin Heitmueller wrote: The 950q doesn't use the dvb-usb framework (nor does it load the firmware at init). Whatever is going on there is completely unrelated to what Antti is debugging. Ahhh. Pity. I was almost giddy there for a second. :-/ Cheers, b. signature.asc Description: OpenPGP digital signature
Re: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 12-06-02 10:44 PM, Antti Palosaari wrote: That solves DVB USB firmware loading problems. As in you have a patch that works or it's just solved in theory. If you have a patch I'd love to apply it here and get this machine suspendable again. Cheers, b. signature.asc Description: OpenPGP digital signature
Re: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 06/03/2012 05:38 PM, Brian J. Murrell wrote: On 12-06-02 10:44 PM, Antti Palosaari wrote: That solves DVB USB firmware loading problems. As in you have a patch that works or it's just solved in theory. If you have a patch I'd love to apply it here and get this machine suspendable again. I have patch which works but is as a proof-of-concept stage. I am just finalizing it. I will inform when it is ready, likely later tonight (as I would like to really see it fixes that suspend/resume problem as I am not able to reproduce it for some reason). regards Antit -- http://palosaari.fi/ -- 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: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 06/03/2012 05:43 PM, Antti Palosaari wrote: On 06/03/2012 05:38 PM, Brian J. Murrell wrote: On 12-06-02 10:44 PM, Antti Palosaari wrote: That solves DVB USB firmware loading problems. As in you have a patch that works or it's just solved in theory. If you have a patch I'd love to apply it here and get this machine suspendable again. I have patch which works but is as a proof-of-concept stage. I am just finalizing it. I will inform when it is ready, likely later tonight (as I would like to really see it fixes that suspend/resume problem as I am not able to reproduce it for some reason). That firmware downloading patch is done top of my new dvb-usb development tree. I have converted very limited set of drivers for that tree, af9015, au6610, ec168 and anysee (and those are only on my local hard disk). I tried to backport patch for the current dvb-usb but I ran many problems and gave up. Looks like it is almost impossible to convert old dvb-usb without big changes... So what driver you are using? It is possible I can convert your driver too and then it is possible to test. Patch in question can be found from that tree: http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/dvb-usb regards Antti -- http://palosaari.fi/ -- 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: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 06/01/2012 10:52 PM, Antti Palosaari wrote: Original Message Subject: [Bug 827538] DVB USB device firmware requested in module_init() Date: Fri, 01 Jun 2012 19:44:17 + From: bugzi...@redhat.com To: cr...@iki.fi https://bugzilla.redhat.com/show_bug.cgi?id=827538 Kay Sievers k...@redhat.com changed: What |Removed |Added CC| |gansal...@gmail.com, | |ita...@ispbrasil.com.br, | |kernel-ma...@redhat.com, | |madhu.chinako...@gmail.com Component|udev |kernel Assignee|udev-ma...@redhat.com |kernel-ma...@redhat.com Summary|DVB USB device firmware |DVB USB device firmware |downloading takes 30 |requested in module_init() |seconds | --- Comment #1 from Kay Sievers k...@redhat.com --- This is very likely a kernel driver issue. Drivers must not load firmware in the module_init() path, or device probe()/bind() path. This creates a deadlock in the event handling. We used to silently try to work around that, but recently started to log this error explicitely. The firmware should in general be requested asynchronously, or at the first open() of the device. Details are here: http://thread.gmane.org/gmane.linux.network/217729 I suspect all of our DVB USB firmere downloading problems are coming from that issues. I mean especially those suspend / resume failings too. What I think I will try to delay driver registertration using workqueue. Return just success for the USB driver probe and continue real probe from workqueue. Antti -- http://palosaari.fi/ -- 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: Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
On 06/02/2012 07:39 PM, Antti Palosaari wrote: On 06/01/2012 10:52 PM, Antti Palosaari wrote: Original Message Subject: [Bug 827538] DVB USB device firmware requested in module_init() Date: Fri, 01 Jun 2012 19:44:17 + From: bugzi...@redhat.com To: cr...@iki.fi https://bugzilla.redhat.com/show_bug.cgi?id=827538 Kay Sievers k...@redhat.com changed: What |Removed |Added CC| |gansal...@gmail.com, | |ita...@ispbrasil.com.br, | |kernel-ma...@redhat.com, | |madhu.chinako...@gmail.com Component|udev |kernel Assignee|udev-ma...@redhat.com |kernel-ma...@redhat.com Summary|DVB USB device firmware |DVB USB device firmware |downloading takes 30 |requested in module_init() |seconds | --- Comment #1 from Kay Sievers k...@redhat.com --- This is very likely a kernel driver issue. Drivers must not load firmware in the module_init() path, or device probe()/bind() path. This creates a deadlock in the event handling. We used to silently try to work around that, but recently started to log this error explicitely. The firmware should in general be requested asynchronously, or at the first open() of the device. Details are here: http://thread.gmane.org/gmane.linux.network/217729 I suspect all of our DVB USB firmere downloading problems are coming from that issues. I mean especially those suspend / resume failings too. What I think I will try to delay driver registertration using workqueue. Return just success for the USB driver probe and continue real probe from workqueue. That solves DVB USB firmware loading problems. I wonder why that udev requirement not to block module init was not informed for linux-media... Now it is much work to look thru all drivers and check those did not load firmware on attach or init. regards Antti -- http://palosaari.fi/ -- 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
Fwd: [Bug 827538] DVB USB device firmware requested in module_init()
Original Message Subject: [Bug 827538] DVB USB device firmware requested in module_init() Date: Fri, 01 Jun 2012 19:44:17 + From: bugzi...@redhat.com To: cr...@iki.fi https://bugzilla.redhat.com/show_bug.cgi?id=827538 Kay Sievers k...@redhat.com changed: What|Removed |Added CC||gansal...@gmail.com, ||ita...@ispbrasil.com.br, ||kernel-ma...@redhat.com, ||madhu.chinako...@gmail.com Component|udev|kernel Assignee|udev-ma...@redhat.com |kernel-ma...@redhat.com Summary|DVB USB device firmware |DVB USB device firmware |downloading takes 30|requested in module_init() |seconds | --- Comment #1 from Kay Sievers k...@redhat.com --- This is very likely a kernel driver issue. Drivers must not load firmware in the module_init() path, or device probe()/bind() path. This creates a deadlock in the event handling. We used to silently try to work around that, but recently started to log this error explicitely. The firmware should in general be requested asynchronously, or at the first open() of the device. Details are here: http://thread.gmane.org/gmane.linux.network/217729 -- You are receiving this mail because: You reported the bug. -- 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
