From: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Modifying the pullup state during host mode trig a new enumeration
of attached device. Thus, avoid modifying pullup in host mode.
Signed-off-by: Gregory Herrero <gregory.herrero@xxxxxxxxx>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@xxxxxxxxx>
Tested-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
Tested-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
Tested-by: John Youn <johnyoun@xxxxxxxxxxxx>
Acked-by: John Youn <johnyoun@xxxxxxxxxxxx>
---
drivers/usb/dwc2/gadget.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index df8d599..6260ad4 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3116,7 +3116,14 @@ static int dwc2_hsotg_pullup(struct usb_gadget *gadget, int is_on)
struct dwc2_hsotg *hsotg = to_hsotg(gadget);
unsigned long flags = 0;
- dev_dbg(hsotg->dev, "%s: is_on: %d\n", __func__, is_on);
+ dev_dbg(hsotg->dev, "%s: is_on: %d op_state: %d\n", __func__, is_on,
+ hsotg->op_state);
+
+ /* Don't modify pullup state while in host mode */
+ if (hsotg->op_state != OTG_STATE_B_PERIPHERAL) {
+ hsotg->enabled = is_on;
+ return 0;
+ }
mutex_lock(&hsotg->init_mutex);
spin_lock_irqsave(&hsotg->lock, flags);
--
2.3.3
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