From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Mon, 20 Oct 2014 10:45:33 +0000 (+0200)
Subject: usb: dwc2: gadget: fix gadget unregistration in udc_stop() function
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=32805c350bad16e7d4debe55820d2e79dca89fb6;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

usb: dwc2: gadget: fix gadget unregistration in udc_stop() function

udc_stop() should clear ->driver pointer unconditionally to let the UDC
framework to work correctly with both registering/unregistering gadgets
and enabling/disabling gadgets by writing to
/sys/class/udc/*hsotg/soft_connect interface.

Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7f25527b10a7..5e548f75686c 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -2937,9 +2937,7 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget,
 
 	spin_lock_irqsave(&hsotg->lock, flags);
 
-	if (!driver)
-		hsotg->driver = NULL;
-
+	hsotg->driver = NULL;
 	hsotg->gadget.speed = USB_SPEED_UNKNOWN;
 
 	spin_unlock_irqrestore(&hsotg->lock, flags);