linux-kernel - [PATCH v2 14/14] memory: samsung: exynos5422-dmc: Convert to use resource-managed OPP API

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Date:   Thu, 11 Mar 2021 22:21:05 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Qiang Yu <yuq825@...il.com>, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>, Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Lukasz Luba <lukasz.luba@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Yangtao Li <tiny.windzz@...il.com>
Cc:     Daniel Vetter <daniel@...ll.ch>, dri-devel@...ts.freedesktop.org,
        lima@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-media@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH v2 14/14] memory: samsung: exynos5422-dmc: Convert to use resource-managed OPP API

From: Yangtao Li <tiny.windzz@...il.com>

Use resource-managed API to simplify code.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/memory/samsung/exynos5422-dmc.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index 1dabb509dec3..56f6e65d40cd 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -343,7 +343,7 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 	int idx;
 	unsigned long freq;
 
-	ret = dev_pm_opp_of_add_table(dmc->dev);
+	ret = devm_pm_opp_of_add_table(dmc->dev);
 	if (ret < 0) {
 		dev_err(dmc->dev, "Failed to get OPP table\n");
 		return ret;
@@ -354,7 +354,7 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 	dmc->opp = devm_kmalloc_array(dmc->dev, dmc->opp_count,
 				      sizeof(struct dmc_opp_table), GFP_KERNEL);
 	if (!dmc->opp)
-		goto err_opp;
+		return -ENOMEM;
 
 	idx = dmc->opp_count - 1;
 	for (i = 0, freq = ULONG_MAX; i < dmc->opp_count; i++, freq--) {
@@ -362,7 +362,7 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 
 		opp = dev_pm_opp_find_freq_floor(dmc->dev, &freq);
 		if (IS_ERR(opp))
-			goto err_opp;
+			return PTR_ERR(opp);
 
 		dmc->opp[idx - i].freq_hz = freq;
 		dmc->opp[idx - i].volt_uv = dev_pm_opp_get_voltage(opp);
@@ -371,11 +371,6 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
 	}
 
 	return 0;
-
-err_opp:
-	dev_pm_opp_of_remove_table(dmc->dev);
-
-	return -EINVAL;
 }
 
 /**
@@ -1567,8 +1562,6 @@ static int exynos5_dmc_remove(struct platform_device *pdev)
 	clk_disable_unprepare(dmc->mout_bpll);
 	clk_disable_unprepare(dmc->fout_bpll);
 
-	dev_pm_opp_remove_table(dmc->dev);
-
 	return 0;
 }
 
-- 
2.29.2