From: Yunzhi Li <lyz@rock-chips.com>
Date: Fri, 6 Mar 2015 07:17:10 +0000 (+0800)
Subject: usb: dwc2: host: fix dwc2 disconnect bug
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=509d612b2fc4b66a58f1af762ac69829ed11c0ce;p=linux-beck.git

usb: dwc2: host: fix dwc2 disconnect bug

When dwc2 controller detects a disconnect interrupt,
dwc2_hcd_disconnect() should be called immediately to do clean-up
jobs and set port_connect_status_change flag to notify usb hub
driver disconnect status.

Tested-by: Vincent Palatin <vpalatin@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 02e3e2d4ea56..6cf047878dba 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -377,6 +377,9 @@ static void dwc2_handle_disconnect_intr(struct dwc2_hsotg *hsotg)
 		dwc2_is_host_mode(hsotg) ? "Host" : "Device",
 		dwc2_op_state_str(hsotg));
 
+	if (hsotg->op_state == OTG_STATE_A_HOST)
+		dwc2_hcd_disconnect(hsotg);
+
 	/* Change to L3 (OFF) state */
 	hsotg->lx_state = DWC2_L3;