check if the controller was in device mode in irq.
If not, we just return IRQ_NONE.
Signed-off-by: Neil Zhang <zhangwm@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc_core.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 44d6e68..8fb7e25 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1867,10 +1867,16 @@ static void irq_process_error(struct mv_udc *udc)
static irqreturn_t mv_udc_irq(int irq, void *dev)
{
struct mv_udc *udc = (struct mv_udc *)dev;
- u32 status, intr;
+ u32 status, intr, usbmode;
spin_lock(&udc->lock);
+ usbmode = readl(&udc->op_regs->usbmode);
+ if ((usbmode & USBMODE_CTRL_MODE_MASK) != USBMODE_CTRL_MODE_DEVICE) {
+ spin_unlock(&udc->lock);
+ return IRQ_NONE;
+ }
+
status = readl(&udc->op_regs->usbsts);
intr = readl(&udc->op_regs->usbintr);
status &= intr;
--
1.7.1
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