DMA-API: usb: use dma_set_coherent_mask()

The correct way for a driver to specify the coherent DMA mask is
not to directly access the field in the struct device, but to use
dma_set_coherent_mask().  Only arch and bus code should access this
member directly.

Convert all direct write accesses to using the correct API.

Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c
index 1cf0adba3fc8..6839e1504db5 100644
--- a/drivers/usb/host/ehci-spear.c
+++ b/drivers/usb/host/ehci-spear.c
@@ -83,8 +83,9 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev)
          */
         if (!pdev->dev.dma_mask)
                 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
-        if (!pdev->dev.coherent_dma_mask)
-                pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+        retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+        if (retval)
+                goto fail;
 
         usbh_clk = devm_clk_get(&pdev->dev, NULL);
         if (IS_ERR(usbh_clk)) {