1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index ef2332a9941d..a44a450c860d 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -1154,8 +1154,11 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
         struct musb_hw_ep       *hw_ep = NULL;
         u32                     rx, tx;
         int                     i, index;
+        unsigned long           flags;
 
         cppi = container_of(musb->dma_controller, struct cppi, controller);
+        if (cppi->irq)
+                spin_lock_irqsave(&musb->lock, flags);
 
         tibase = musb->ctrl_base;
 
@@ -1285,6 +1288,9 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
         /* write to CPPI EOI register to re-enable interrupts */
         musb_writel(tibase, DAVINCI_CPPI_EOI_REG, 0);
 
+        if (cppi->irq)
+                spin_unlock_irqrestore(&musb->lock, flags);
+
         return IRQ_HANDLED;
 }