pwm: mediatek: Drop the check for of_device_get_match_data()

This patch drop the check for of_device_get_match_data. Due to the only
way call driver probe is compatible match. The data pointer which points
to the SoC specify data is directly set by driver, and it should not be
NULL in our case. We can safety remove the check for the result of
of_device_get_match_data().

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c
index 6697e30811e7855fb102f6ba58ff02217dea1529..459b2ccd0b75d3eb4724ab855fdfec79181b1d44 100644 (file)
--- a/drivers/pwm/pwm-mediatek.c
+++ b/drivers/pwm/pwm-mediatek.c
@@ -226,7 +226,6 @@ static const struct pwm_ops mtk_pwm_ops = {
 
 static int mtk_pwm_probe(struct platform_device *pdev)
 {
-       const struct mtk_pwm_platform_data *data;
        struct mtk_pwm_chip *pc;
        struct resource *res;
        unsigned int i;
@@ -236,17 +235,14 @@ static int mtk_pwm_probe(struct platform_device *pdev)
        if (!pc)
                return -ENOMEM;
 
-       data = of_device_get_match_data(&pdev->dev);
-       if (data == NULL)
-               return -EINVAL;
-       pc->soc = data;
+       pc->soc = of_device_get_match_data(&pdev->dev);
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        pc->regs = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(pc->regs))
                return PTR_ERR(pc->regs);
 
-       for (i = 0; i < data->num_pwms + 2 && pc->soc->has_clks; i++) {
+       for (i = 0; i < pc->soc->num_pwms + 2 && pc->soc->has_clks; i++) {
                pc->clks[i] = devm_clk_get(&pdev->dev, mtk_pwm_clk_name[i]);
                if (IS_ERR(pc->clks[i])) {
                        dev_err(&pdev->dev, "clock: %s fail: %ld\n",
@@ -260,7 +256,7 @@ static int mtk_pwm_probe(struct platform_device *pdev)
        pc->chip.dev = &pdev->dev;
        pc->chip.ops = &mtk_pwm_ops;
        pc->chip.base = -1;
-       pc->chip.npwm = data->num_pwms;
+       pc->chip.npwm = pc->soc->num_pwms;
 
        ret = pwmchip_add(&pc->chip);
        if (ret < 0) {