Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 {
        struct device_node *np = pdev->dev.of_node;
        struct ehrpwm_pwm_chip *pc;
-       struct resource *r;
        struct clk *clk;
        int ret;
 
        pc->chip.base = -1;
        pc->chip.npwm = NUM_PWM_CHANNEL;
 
-       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       pc->mmio_base = devm_ioremap_resource(&pdev->dev, r);
+       pc->mmio_base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(pc->mmio_base))
                return PTR_ERR(pc->mmio_base);