From: Dinh Nguyen <dingu...@opensource.altera.com>
The Host workqueue will not get initialized if the driver is configured for
peripheral mode only. Thus we need to check for wq_otg before calling
queue_work().
Signed-off-by: Dinh Nguyen <dingu...@opensource.altera.com>
Acked-by: Paul Zimmerman <pa...@synopsys.com>
---
drivers/usb/dwc2/core_intr.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 651785d..1240875 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -287,9 +287,11 @@ static void dwc2_handle_conn_id_status_change_intr(struct
dwc2_hsotg *hsotg)
* Release lock before scheduling workq as it holds spinlock during
* scheduling.
*/
- spin_unlock(&hsotg->lock);
- queue_work(hsotg->wq_otg, &hsotg->wf_otg);
- spin_lock(&hsotg->lock);
+ if (hsotg->wq_otg) {
+ spin_unlock(&hsotg->lock);
+ queue_work(hsotg->wq_otg, &hsotg->wf_otg);
+ spin_lock(&hsotg->lock);
+ }
/* Clear interrupt */
writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS);
--
2.0.3
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