From fe7c994a5ed8e3bd50888ef4391da9bb28934bd7 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Tue, 25 Jul 2017 16:10:22 +0800 Subject: usb: mtu3: handle delayed status of the control transfer Add the delayed status handling. This is used by mass storage etc to gain some extra time to setup its internal status before it can proceed further requests, and once the gadget is ready, it will enqueue an empty packet which is used for synchronization. The issue may happen on some FGPA platform with very low cpu frequency. Signed-off-by: Chunfeng Yun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_gadget.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/usb/mtu3/mtu3_gadget.c') diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index 9dd2441b4fa1..a4ad67cf0c52 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -663,6 +663,7 @@ int mtu3_gadget_setup(struct mtu3 *mtu) mtu->g.sg_supported = 0; mtu->g.name = MTU3_DRIVER_NAME; mtu->is_active = 0; + mtu->delayed_status = false; mtu3_gadget_init_eps(mtu); @@ -727,4 +728,5 @@ void mtu3_gadget_reset(struct mtu3 *mtu) mtu->address = 0; mtu->ep0_state = MU3D_EP0_STATE_SETUP; mtu->may_wakeup = 0; + mtu->delayed_status = false; } -- cgit