On Sun, Dec 22, 2013 at 02:59:45AM -0300, Ezequiel Garcia wrote: > Hello, > > While doing some experiments with the stk1160 driver (for "Easycap" TV video > capture devices), ran into problems using v3.13-rc4. The problem is that the > stk1160 IRQ handler receives no URBs at all. > > When configuring with CONFIG_MUSB_PIO_ONLY this looks solved, but the > bandwidth requirements are too large for PIO (it's a raw video device) and the > video can't get captured. > > Interesting enough, using an old backported for v3.2 stk1160 driver, this same > setup works with TI PSP v3.2 kernel. So, I guess it's some software bug in > either the cppi41 dmaengine or the musb. > > I tried to compare the PSP to the mainline drivers but they seems *very* > different and really beyond my understanding. > > Any ideas on how can I help debugging this? > Ping? It would be good to hunt thig bug down. The TI PSP provided USB driver works fine so at least that's a starting point... -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
