dwc2 usb driver does not handle disconnect in gadget mode correctly,
this results in the gadget still thinking it is connected to a host.
Changing the suspend interrupt handling in gadget mode to reflect the
correct disconnected state fixes this.
Cc: linux-usb@xxxxxxxxxxxxxxx <linux-usb@xxxxxxxxxxxxxxx>
Cc: Minas Harutyunyan <hminas@xxxxxxxxxxxx>
Signed-off-by: Adrian Carpenter <adrian@xxxxxxxxxxxx>
---
drivers/usb/dwc2/core_intr.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff -uprN -X usb-vanilla/Documentation/dontdiff
usb-vanilla/drivers/usb/dwc2/core_intr.c
usb/drivers/usb/dwc2/core_intr.c
--- usb-vanilla/drivers/usb/dwc2/core_intr.c 2020-01-13
13:56:03.988950132 +0000
+++ usb/drivers/usb/dwc2/core_intr.c 2020-01-13 17:29:03.496377075 +0000
@@ -536,13 +536,12 @@ static void dwc2_handle_usb_suspend_intr
}
skip_power_saving:
/*
- * Change to L2 (suspend) state before releasing
- * spinlock
+ * Suspend seems to be called in then event
+ * of gadget mode disconnect
*/
- hsotg->lx_state = DWC2_L2;
+ hsotg->lx_state = DWC2_L3;
- /* Call gadget suspend callback */
- call_gadget(hsotg, suspend);
+ usb_gadget_set_state(&hsotg->gadget,
USB_STATE_NOTATTACHED);
}
} else {
if (hsotg->op_state == OTG_STATE_A_PERIPHERAL) {
