can: flexcan: use of_property_read_u32 to get DT entry value

of_property_read_u32() can auto handle endian problems, use this
function can make code clean and simple.

No need to check return value here since the following got value
check will handle this.

Cc: linux-can@vger.kernel.org
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 0f88cd3bb9282eab522ef47237d641825f86bd68..b429b3f3fa7fdf25568b249ef5f70d8946c186ac 100644 (file)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -938,14 +938,9 @@ static int __devinit flexcan_probe(struct platform_device *pdev)
        if (IS_ERR(pinctrl))
                return PTR_ERR(pinctrl);
 
-       if (pdev->dev.of_node) {
-               const __be32 *clock_freq_p;
-
-               clock_freq_p = of_get_property(pdev->dev.of_node,
-                                               "clock-frequency", NULL);
-               if (clock_freq_p)
-                       clock_freq = be32_to_cpup(clock_freq_p);
-       }
+       if (pdev->dev.of_node)
+               of_property_read_u32(pdev->dev.of_node,
+                                               "clock-frequency", &clock_freq);
 
        if (!clock_freq) {
                clk = clk_get(&pdev->dev, NULL);