usb: Perform device detect polling on all usb controllers.

Move the 100ms (USB_TIME_SIGATT) device detect polling from the
ohci/uhci/usb-hub code to the generic usb_hub_port_setup() code.  This
extends the 100ms polling to ehci and xhci controllers.  The code in
usb_hub_port_setup() now compares USB_TIME_SIGATT to the start of
usb_enumerate(), which may make boots faster when threads are
disabled.

This patch also changes the meaning of the return code for
hub->op->detect() calls.  Now 1 indicates device found, 0 indicates
device not found, and -1 indicates permanent failure.

Also, the xhci controller generic delay of 100ms is replaced with a
20ms root hub power stabilize time.  This in combination with the
100ms for USB_TIME_SIGATT should be closer to the USB2 spec (the USB3
spec does not seem to declare an equivalent of USB_TIME_SIGATT).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

0 files changed, 0 insertions, 0 deletions