[linux-dvb] bt878(0): IRQ lockup, cleared int mask

Edgar Toernig froese at gmx.de
Sun Jul 31 03:51:22 CEST 2005

David Johnson wrote:
> As I'm watching TV, I'm getting lots of the following messages in demsg:
> bt878(0): irq FDSR FBUS risc_pc=1fc66010
> bt878(0): irq FBUS risc_pc=1fc66158
> bt878(0): IRQ lockup, cleared int mask
Look for the line

	controlreg |= 0x1b;

in drivers/media/dvb/bt8xx/bt878.c and change it to

	controlreg |= 0x13;

That works for me.  It lowers the fifo-threshold at which the DMA
controller starts its DMA cycle.  I don't know why this happens
with newer kernels.  With 2.6.8 (SuSE-9.2 kernel) everything was
fine ...

I'll make a patch with some other stuff (for cx24110 and bttv) when
2.6.13 is out.

Ciao, ET.

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