From: Li Jun <jun.li@nxp.com>
Date: Fri, 19 Feb 2016 02:04:45 +0000 (+0800)
Subject: usb: chipidea: otg: set host_request_flag for gadget
X-Git-Tag: v4.6-rc1~117^2~4^2~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2dfb46be1a231888e8d51b97573f592e408d5199;p=platform%2Fkernel%2Flinux-exynos.git

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 @@ set_a_bus_req(struct device *dev, struct device_attribute *attr,
 			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 @@ set_b_bus_req(struct device *dev, struct device_attribute *attr,
 	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);