We better print an error in case probing of dwc2 fails on
setting the DMA coherent mask.

Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com>
---
 drivers/usb/dwc2/platform.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
index 4703478..4ddbdbd 100644
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -382,8 +382,10 @@ static int dwc2_driver_probe(struct platform_device *dev)
        if (!dev->dev.dma_mask)
                dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
        retval = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32));
-       if (retval)
+       if (retval) {
+               dev_err(&dev->dev, "can't set coherent DMA mask: %d\n", retval);
                return retval;
+       }
 
        res = platform_get_resource(dev, IORESOURCE_MEM, 0);
        hsotg->regs = devm_ioremap_resource(&dev->dev, res);
-- 
2.7.4

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