Krzysztof Matula wrote: > nuclearcat wrote: > >>>SkyStar2, kernel: 2.6.10-1.760_FC3 > >>> > >>>I'm waiting for the dvr fd with select, and then if FD_ISSET I issue a > >>>read() call to it. Usually it works perfectly well, but sometimes, > >>>especially when other thread is performing multiple repeated tunings on > >>>the forntend the read() blocks infinitely until the process is killed... > > > > > >>Open with O_NONBLOCK. > > Will it help? I assume the read() will not block, but will it actually > receive any data? Of course not. If there's no data O_NONBLOCK can do nothing about it. > >>It has been reported a few times that the skystar2 driver has a bug where > >>it stops outputting data. I assume a race in irq/dma handling, but > >>didn't have the time to investigate (I also don't have hardware). > >>You could do 'cat /proc/interrupts' to see if there are still irqs > >>when your read() hangs. > > The counter stops. > The frontend reports a locked state however. > > Any suggestions how to investigate it further? Patrick Boettcher is currently working on the driver. Let's wait what comes out of that. Johannes
