linux-kernel - [PATCH v4 2/10] pwm: mediatek: droping the check for of_device_get_match

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Date:   Tue, 20 Aug 2019 09:40:17 +0800
From:   Sam Shih <sam.shih@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thierry Reding <thierry.reding@...il.com>
CC:     Ryder Lee <ryder.lee@...iatek.com>,
        John Crispin <john@...ozen.org>, <linux-pwm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        sam shih <sam.shih@...iatek.com>
Subject: [PATCH v4 2/10] pwm: mediatek: droping the check for of_device_get_match_data

From: sam shih <sam.shih@...iatek.com>

This patch drop the check for of_device_get_match_data.
Due to the only way call driver probe is compatible match,
In this case, the platform data should never be NULL.

Signed-off-by: Ryder Lee <ryder.lee@...iatek.com>
Signed-off-by: Sam Shih <sam.shih@...iatek.com>
---
Used:
https://patchwork.kernel.org/patch/11096905/
Changes since v4:
Follow reviewer's comments:
Move the changes of droping the check for of_device_get_match_data
returning non-NULL to this patch
---
 drivers/pwm/pwm-mediatek.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c
index 287fda3674ce..f9d67fb66adb 100644
--- a/drivers/pwm/pwm-mediatek.c
+++ b/drivers/pwm/pwm-mediatek.c
@@ -236,10 +236,7 @@ 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);
-- 
2.17.1