From: Dinh Nguyen <[email protected]>

Enable the support of running URB giveback in tasklet context.
Remove spinlocks around URB giveback as these are not needed when running
in the tasklet.

Signed-off-by: Dinh Nguyen <[email protected]>
---
 drivers/usb/dwc2/hcd.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 4d918ed..9bdc077 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -2193,9 +2193,7 @@ void dwc2_host_complete(struct dwc2_hsotg *hsotg, struct 
dwc2_qtd *qtd,
        kfree(qtd->urb);
        qtd->urb = NULL;
 
-       spin_unlock(&hsotg->lock);
        usb_hcd_giveback_urb(dwc2_hsotg_to_hcd(hsotg), urb, status);
-       spin_lock(&hsotg->lock);
 }
 
 /*
@@ -2528,9 +2526,7 @@ static int _dwc2_hcd_urb_dequeue(struct usb_hcd *hcd, 
struct urb *urb,
        urb->hcpriv = NULL;
 
        /* Higher layer software sets URB status */
-       spin_unlock(&hsotg->lock);
        usb_hcd_giveback_urb(hcd, urb, status);
-       spin_lock(&hsotg->lock);
 
        dev_dbg(hsotg->dev, "Called usb_hcd_giveback_urb()\n");
        dev_dbg(hsotg->dev, "  urb->status = %d\n", urb->status);
@@ -2640,7 +2636,7 @@ static struct hc_driver dwc2_hc_driver = {
        .hcd_priv_size = sizeof(struct wrapper_priv_data),
 
        .irq = _dwc2_hcd_irq,
-       .flags = HCD_MEMORY | HCD_USB2,
+       .flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
 
        .start = _dwc2_hcd_start,
        .stop = _dwc2_hcd_stop,
-- 
2.0.3

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