From: Gregory Herrero <gregory.herrero@intel.com>
Date: Wed, 29 Apr 2015 20:09:07 +0000 (+0200)
Subject: usb: dwc2: gadget: ignore pm suspend/resume in L2
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9e779778ad7e503434aa76bfc96f98d7d7b2d139;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

usb: dwc2: gadget: ignore pm suspend/resume in L2

Nothing to be done in pm suspend/resume when controller is in L2.
Don't disconnect or reset. State is already saved when putting
controller in hibernation and will be restored on USB bus resume.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index f867e954764f..a360f49d3fd0 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3672,6 +3672,9 @@ int s3c_hsotg_suspend(struct dwc2_hsotg *hsotg)
 	unsigned long flags;
 	int ret = 0;
 
+	if (hsotg->lx_state != DWC2_L0)
+		return ret;
+
 	mutex_lock(&hsotg->init_mutex);
 
 	if (hsotg->driver) {
@@ -3712,6 +3715,9 @@ int s3c_hsotg_resume(struct dwc2_hsotg *hsotg)
 	unsigned long flags;
 	int ret = 0;
 
+	if (hsotg->lx_state == DWC2_L2)
+		return ret;
+
 	mutex_lock(&hsotg->init_mutex);
 
 	if (hsotg->driver) {