On Tue, 2011-06-28 at 17:39 -0400, Jarod Wilson wrote: > Up and running on 3.0-rc5 now, and I'm not seeing the panic, but the > box keeps hard-locking after some number of keypresses. Can't get a > peep out of it with sysrq, nmi watchdog doesn't seem to fire, etc. > > At the suggestion of "Dark Shadow", I've also tried booting the box > with pci=nomsi. Works a treat then. Since his HVR-1270 and my HVR-1250 > both behave much better with pci=nomsi, I'm thinking that in the > short-term, we should probably make sure msi doesn't get enabled in > the cx23885 driver, and longer-term, we can look at fixing it. Sounds fine. But fixcing the cx23885 driver to deal with both PCIe emulation of legacy PCI INTx and PCIe MSI will likely be very involved. (Maybe I'm wrong?) Taking a trip down memory lane to 2 Dec 2010... http://www.spinics.net/lists/linux-media/msg25956.html On Wed, 2010-12-01 at 21:52 -0800, David Liontooth wrote: > On 11/29/2010 04:38 AM, Andy Walls wrote: > > On Sun, 2010-11-28 at 23:49 -0800, David Liontooth wrote: > > For a quick band-aid, use "pci=nomsi" on your kernel command line, and > > reboot to reset the CX23888 hardware. > > > > The problem is MSI. The cx23885 driver isn't ready for it. The patch > > that enabled MSI for cx23885 probably needs to be reverted until some of > > these issues are sorted out. > -- what do we lose by removing the MSI support patch? Problems mostly. The driver was written to work with emulated legacy PCI INTx interrupts, which are to be treated as level triggered, and not PCIe MSI, which are to be treated as edge triggered. That's why I say the cx23885 driver isn't ready for MSI, but I'm not sure how involved an audit and conversion would be. I know an audit will take time and expertise. Regards, Andy -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
