usb: chipidea: otg: set host_request_flag for gadget
Set host_request_flag if the current peripheral wants to take host role
via changing a_bus_req or b_bus_req by user application.
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
index ba90dc6..cb28e76 100644
--- a/drivers/usb/chipidea/otg_fsm.c
+++ b/drivers/usb/chipidea/otg_fsm.c
@@ -66,6 +66,11 @@
return count;
}
ci->fsm.a_bus_req = 1;
+ if (ci->fsm.otg->state == OTG_STATE_A_PERIPHERAL) {
+ ci->gadget.host_request_flag = 1;
+ mutex_unlock(&ci->fsm.lock);
+ return count;
+ }
}
ci_otg_queue_work(ci);
@@ -144,8 +149,14 @@
mutex_lock(&ci->fsm.lock);
if (buf[0] == '0')
ci->fsm.b_bus_req = 0;
- else if (buf[0] == '1')
+ else if (buf[0] == '1') {
ci->fsm.b_bus_req = 1;
+ if (ci->fsm.otg->state == OTG_STATE_B_PERIPHERAL) {
+ ci->gadget.host_request_flag = 1;
+ mutex_unlock(&ci->fsm.lock);
+ return count;
+ }
+ }
ci_otg_queue_work(ci);
mutex_unlock(&ci->fsm.lock);