[PATCH] usb: dwc3: add EXPORT_SYMBOL_GPL for role init functions

[Ray Chi <raychi@xxxxxxxxxx>]

Currently, role init functions are used in dwc3 driver but
can't be called from kernel modules.
  dwc3_host_init
  dwc3_host_exit
  dwc3_gadget_init
  dwc3_gadget_exit
  dwc3_event_buffers_setup
  dwc3_event_buffers_cleanup

If other kernel modules want to use these functions, it needs
EXPORT_SYMBOL_GPL() to get compile pass.

Signed-off-by: Ray Chi <raychi@xxxxxxxxxx>
---
 drivers/usb/dwc3/core.c   | 2 ++
 drivers/usb/dwc3/gadget.c | 2 ++
 drivers/usb/dwc3/host.c   | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 25c686a752b0..f34a7dd5323e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -418,6 +418,7 @@ int dwc3_event_buffers_setup(struct dwc3 *dwc)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(dwc3_event_buffers_setup);
 
 void dwc3_event_buffers_cleanup(struct dwc3 *dwc)
 {
@@ -433,6 +434,7 @@ void dwc3_event_buffers_cleanup(struct dwc3 *dwc)
 			| DWC3_GEVNTSIZ_SIZE(0));
 	dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 0);
 }
+EXPORT_SYMBOL_GPL(dwc3_event_buffers_cleanup);
 
 static int dwc3_alloc_scratch_buffers(struct dwc3 *dwc)
 {
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 80c3ef134e41..43110bfdc440 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -3699,6 +3699,7 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 err0:
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dwc3_gadget_init);
 
 /* -------------------------------------------------------------------------- */
 
@@ -3712,6 +3713,7 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
 	dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2,
 			  dwc->ep0_trb, dwc->ep0_trb_addr);
 }
+EXPORT_SYMBOL_GPL(dwc3_gadget_exit);
 
 int dwc3_gadget_suspend(struct dwc3 *dwc)
 {
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index bef1c1ac2067..30589e313a67 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -126,8 +126,10 @@ int dwc3_host_init(struct dwc3 *dwc)
 	platform_device_put(xhci);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dwc3_host_init);
 
 void dwc3_host_exit(struct dwc3 *dwc)
 {
 	platform_device_unregister(dwc->xhci);
 }
+EXPORT_SYMBOL_GPL(dwc3_host_exit);
-- 
2.30.0.280.ga3ce27912f-goog