linux-kernel - [PATCH] soc: mediatek: use of_device_get_match

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Date:   Mon, 16 Apr 2018 10:33:34 +0800
From:   Ryder Lee <ryder.lee@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Ryder Lee <ryder.lee@...iatek.com>
Subject: [PATCH] soc: mediatek: use of_device_get_match_data()

The usage of of_device_get_match_data() reduce the code size a bit.

Also, the only way to call pwrap_probe() is to match an entry in
of_pwrap_match_tbl[], so of_id cannot be NULL.

Signed-off-by: Ryder Lee <ryder.lee@...iatek.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 13 +++----------
 drivers/soc/mediatek/mtk-scpsys.c    |  4 +---
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index e9e054a..2afae64 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1458,19 +1458,12 @@ static int pwrap_probe(struct platform_device *pdev)
 	int ret, irq;
 	struct pmic_wrapper *wrp;
 	struct device_node *np = pdev->dev.of_node;
-	const struct of_device_id *of_id =
-		of_match_device(of_pwrap_match_tbl, &pdev->dev);
 	const struct of_device_id *of_slave_id = NULL;
 	struct resource *res;
 
-	if (!of_id) {
-		dev_err(&pdev->dev, "Error: No device match found\n");
-		return -ENODEV;
-	}
+	if (np->child)
+		of_slave_id = of_match_node(of_slave_match_tbl, np->child);
 
-	if (pdev->dev.of_node->child)
-		of_slave_id = of_match_node(of_slave_match_tbl,
-					    pdev->dev.of_node->child);
 	if (!of_slave_id) {
 		dev_dbg(&pdev->dev, "slave pmic should be defined in dts\n");
 		return -EINVAL;
@@ -1482,7 +1475,7 @@ static int pwrap_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, wrp);
 
-	wrp->master = of_id->data;
+	wrp->master = of_device_get_match_data(&pdev->dev);
 	wrp->slave = of_slave_id->data;
 	wrp->dev = &pdev->dev;
 
diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 435ce5e..a02a18e 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -973,15 +973,13 @@ static void mtk_register_power_domains(struct platform_device *pdev,
 
 static int scpsys_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	const struct scp_subdomain *sd;
 	const struct scp_soc_data *soc;
 	struct scp *scp;
 	struct genpd_onecell_data *pd_data;
 	int i, ret;
 
-	match = of_match_device(of_scpsys_match_tbl, &pdev->dev);
-	soc = (const struct scp_soc_data *)match->data;
+	soc = of_device_get_match_data(&pdev->dev);
 
 	scp = init_scp(pdev, soc->domains, soc->num_domains, &soc->regs,
 			soc->bus_prot_reg_update);
-- 
1.9.1