The patch allows the card to support using both internal tuners without crashing out. I've been recording significantly since the 23rd, it just works now in comparison to constant maintenance. I am under the impression it was against the spec to have a PCI-E card without MSI support. Wouldn't the fallback code as well work in this regard? Tested-by: Kyle Sanderson <kyle.leet@xxxxxxxxx> Thanks a ton for the patch, Kyle. On Thu, Feb 26, 2015 at 7:12 AM, Steven Toth <stoth@xxxxxxxxxxxxxx> wrote: >> I believe the root cause of the crash is due to a DMA/IRQ race condition. It >> most commonly occurs when the saa7164 driver is dealing with more than one >> saa7164 chip (the HVR-2200 and HVR-2250 for example have two - one for each >> tuner). Given MSI avoids DMA/IRQ race conditions - this would explain why >> the patch works as a fix. > > Brendan, thanks. > > With MSI I've had some people report complete success, others still > have the issues. > > In my experience this does help with i2c timeout issues but not > completely in every case. I've also seen it with single card instances > so you descripton above is close - but not quiet accurate in all > cases. > > While I'm generally OK with changing the driver behaviour to enable > MSI by default, please add a module option to allow the behaviour to > be disabled, reverting the driver back to existing behaviour. > > Once this is done, I'll be happy to Ack it. > > Thanks again. > > - Steve > > -- > Steven Toth - Kernel Labs > http://www.kernellabs.com > -- > 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 -- 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
