usb: dwc3: Do not set dma coherent mask

The dma mask is correctly set up by the DT probe function, no
need to override it any more.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/dwc3/dwc3-exynos.c

@@ -20,7 +20,6 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
 #include <linux/clk.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/usb_phy_generic.h>
@@ -117,15 +116,6 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
 	if (!exynos)
 		return -ENOMEM;
 
-	/*
-	 * Right now device-tree probed devices don't get dma_mask set.
-	 * Since shared usb code relies on it, set it here for now.
-	 * Once we move to full device tree support this will vanish off.
-	 */
-	ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
-	if (ret)
-		return ret;
-
 	platform_set_drvdata(pdev, exynos);
 
 	exynos->dev	= dev;

drivers/usb/dwc3/dwc3-st.c

@@ -218,7 +218,6 @@ static int st_dwc3_probe(struct platform_device *pdev)
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-	dma_set_coherent_mask(dev, dev->coherent_dma_mask);
 	dwc3_data->dev = dev;
 	dwc3_data->regmap = regmap;