On 2016-03-04, John Ogness <john.ogness@xxxxxxxxxxxxx> wrote: > Using v4.5-rc6, I modified musb_h_tx_flush_fifo() to allow infinite > looping and kept a log of the number of loops that were executed. For > my test I am regularly seeing 3000-3200 loops (with a max so far of > 3289). Since there used to be an msleep() in the loop, I never hit the > warnings before. > > With my board, 3200 loops takes about 950us. Perhaps the msleep() > should be reinserted, but with a retry count of only 3 before aborting > with the warning. Sorry, since musb_h_tx_flush_fifo() can run in interrupt context, obviously an msleep() cannot be used. It seems increasing the retry count may be the only option here. Maybe 5000? John Ogness -- 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
