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

Roger Quadros
2015-09-02T14:24:56Z

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(+)

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);

--
2.1.4