Does all USB Host controller hardware have the ability to disable PING? > > > 2. Do you remember the PING issue I reported in OMAP list? How do > you > > > think of that? > > > > Yes, something needs to be done. EHCI might benefit from the same > > kind of patch, to cope with ill-behaved usb thumb drives. > > > > > > > > I have an idea: the USB_NAKLIMIT0 should be set to some value, > when we > > > > got NAK timeout interrupt, we can disable PING. When enumerating > normal > > > > USB stick, there is no NAK timeout, because PING is efficient for > > > > handshaking. While problem USB stick will generate NAK timeout > > > > interrupt, we disable PING for this kind of USB device > enumeration.
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