Commit 70516292 authored Nov 18, 2014 by Mayank Rana

usb: dwc3: gadget: Update dwc->link_state on connect interrupt



Currently dwc3->link_state is being updated from reset, disconnect,
wakeup and suspend interrupt context. It is being seen that on reset,
link state is still DWC3_LINK_STATE_U3 which causing some of function
driver's control/interrupt transfer to fail as it tries to perform
remote wakeup functionality and keep retrying it. With that host is
trying to re-enumerate device. Fix this issue by updating link state
on receiving connect interrupt where host is already successfully
perform speed detection and device side usb is moved into operational
DWC3_LINK_STATE_U0 state.

Change-Id: I3052eb8bd4e629587ad967d7243b87e7cdb2587b
Signed-off-by: Mayank Rana <mrana@codeaurora.org>

parent 069f11cb

drivers/usb/dwc3/gadget.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2990,6 +2990,8 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
		dwc->speed = speed;

		dwc3_update_ram_clk_sel(dwc, speed);
		dwc->link_state = dwc3_get_link_state(dwc);
		pr_debug("%s(): LINK_STATE:%d\n", __func__, dwc->link_state);

		switch (speed) {
		case DWC3_DCFG_SUPERSPEED: