[v4,7/9] usb: dwc3: gadget: Fix suspend/resume during dual-role mode

Message ID 1441203864-15786-8-git-send-email-rogerq@ti.com
State Accepted
Commit 9772b47a4c2916d645c551228b6085ea24acbe5d
Headers show

Commit Message

Roger Quadros Sept. 2, 2015, 2:24 p.m.
Gdget controller might not be always active during suspend/
resume when we are operating in dual-role/otg mode.
Check if we're active and only if we are then perform
necessary actions during suspend/resume.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/usb/dwc3/gadget.c | 6 ++++++
 1 file changed, 6 insertions(+)

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 1148ec8..ec6112d 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2792,6 +2792,9 @@  void dwc3_gadget_exit(struct dwc3 *dwc)
 
 int dwc3_gadget_suspend(struct dwc3 *dwc)
 {
+	if (!dwc->gadget_driver)
+		return 0;
+
 	if (dwc->pullups_connected) {
 		dwc3_gadget_disable_irq(dwc);
 		dwc3_gadget_run_stop(dwc, true, true);
@@ -2810,6 +2813,9 @@  int dwc3_gadget_resume(struct dwc3 *dwc)
 	struct dwc3_ep		*dep;
 	int			ret;
 
+	if (!dwc->gadget_driver)
+		return 0;
+
 	/* Start with SuperSpeed Default */
 	dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);