Hi Mike,
On 10.11.2011 05:09, Mike Frysinger wrote:
On Wednesday 09 November 2011 19:03:58 Ilya Yanok wrote:
In our setup (OMAP3 EHCI host, keyboard, mouse mass storage and BT dongle devices connected via several hubs) keyboard fails to initialize during the bus scan (stalled endpoint while get_descriptor/64) and after that keyboard is unusable (even in Linux) until power off/on.
Increasing the delay after port reset from 200ms to 260ms solves this problem.
ugh. this doesn't sound like the right way to fix things. looks like Linux has added a dynamic polling state that automatically deals with broken devices. look at its hub_port_debounce. seems like we should implement something like that instead of delaying longer and longer and making the situation needlessly worse for most systems.
Thanks for the pointer. Unfortunately I don't have time to look into this deeper and we will go with a workaround for now.
Maybe we will return to this later.
Regards, Ilya.