On Tue, 23 Oct 2012, Ankit Patel wrote: > Hi, > > Whenever, software asserts, HC resets during xHCI initialization, host > controller is setting PRC and CSC (one of the version of host controller sets > WRC bit also). However, there is no handling of these bits in xHCI software. What do you mean there's no handling of these bits in the driver? Take a look at xhci-hub.c:xhci_clear_port_change_bit(). > 1. At Initialization - device is NOT connected and due to HC RESET, is there any > following bits should be SET HIGH or not? > - PRC / WRC / CSC bit > > 2. At Initialization - device is CONNECTED and due to HC RESET, is there any > following bits should be SET HIGH or not? > - PRC / WRC / CSC bit It shouldn't matter. Linux should be able to use the controller either way. Alan Stern -- 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
