Commit a66c275b authored Sep 21, 2015 by Roger Quadros Committed by Felipe Balbi Sep 21, 2015

usb: dwc3: gadget: Fix BUG in RT config



Using spin_lock() in hard irq handler is pointless
and causes a BUG() in RT (real-time) configuration
so get rid of it.

The reason it's pointless is because the driver is
basically accessing register which is, anyways,
atomic.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent b431ba88

drivers/usb/dwc3/gadget.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -2665,8 +2665,6 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
		int i;
		irqreturn_t ret = IRQ_NONE;

		spin_lock(&dwc->lock);

		for (i = 0; i < dwc->num_event_buffers; i++) {
		irqreturn_t status;

		@@ -2675,8 +2673,6 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
		ret = status;
		}

		spin_unlock(&dwc->lock);

		return ret;
		}