usb: host: fsl-mph-dr-of: check return of dma_set_mask()

fsl_usb2_device_register() should stop init if dma_set_mask() return
error.

Fixes: cae058610465 ("drivers/usb/host: fsl: Set DMA_MASK of usb platform device")
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Link: https://lore.kernel.org/r/20201010060308.33693-1-ran.wang_1@nxp.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index ae8f60f6e6a5e092bfd314e143fdf6816079e912..44a7e58a26e3ddc0edbf1a345254c1c4472a2dd5 100644 (file)
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -94,10 +94,13 @@ static struct platform_device *fsl_usb2_device_register(
 
        pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
 
-       if (!pdev->dev.dma_mask)
+       if (!pdev->dev.dma_mask) {
                pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
-       else
-               dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+       } else {
+               retval = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+               if (retval)
+                       goto error;
+       }
 
        retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
        if (retval)