commit 68fe05e2a451 (usb: musb: fix tx fifo flush handling) drops the 1ms delay trying to solve the long disconnect time issue when application queued many tx urbs. However, the 1ms delay is needed for some use cases, for example, without the delay, reconnecting AR9271 WIFI dongle no longer works if the connection is dropped from the AP. So let's add back the 1ms delay in musb_h_tx_flush_fifo(), and solve the long disconnect time problem with a separate patch for usb_hcd_flush_endpoint(). Signed-off-by: Bin Liu <b-liu@xxxxxx> --- drivers/usb/musb/musb_host.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index dbe617a735d8..8bb57f76829d 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -139,6 +139,7 @@ static void musb_h_tx_flush_fifo(struct musb_hw_ep *ep) "Could not flush host TX%d fifo: csr: %04x\n", ep->epnum, csr)) return; + mdelay(1); } } -- 1.9.1 -- 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
