linux-kernel - [PATCH 04/16] mmc: sdhci-cadence: Use sdhci_pltfm

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Date:   Fri, 11 Aug 2023 16:03:39 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Yangtao Li <frank.li@...o.com>
Cc:     Florian Fainelli <florian.fainelli@...adcom.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Kamal Dasu <kamal.dasu@...adcom.com>,
        Al Cooper <alcooperx@...il.com>,
        Michal Simek <michal.simek@....com>,
        Eugen Hristev <eugen.hristev@...labora.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Steen Hegelund <Steen.Hegelund@...rochip.com>,
        Daniel Machon <daniel.machon@...rochip.com>,
        UNGLinuxDriver@...rochip.com,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        Brian Norris <briannorris@...omium.org>,
        Ye Xingchen <ye.xingchen@....com.cn>,
        Brad Larson <blarson@....com>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Sai Krishna Potthuri <sai.krishna.potthuri@....com>,
        Swati Agarwal <swati.agarwal@....com>,
        Andy Tang <andy.tang@....com>,
        Georgii Kruglov <georgy.kruglov@...dex.ru>,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Doug Brown <doug@...morgal.com>,
        Li Zetao <lizetao1@...wei.com>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 04/16] mmc: sdhci-cadence: Use sdhci_pltfm_remove()

Use sdhci_pltfm_remove() instead of sdhci_pltfm_unregister() so that
devm_clk_get_enabled() can be used for pltfm_host->clk.

This has the side effect that the order of operations on the error path
and remove path is not the same as it was before, but should be safe
nevertheless.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 drivers/mmc/host/sdhci-cadence.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
index 8cdc178ec1ba..be1505e8c536 100644
--- a/drivers/mmc/host/sdhci-cadence.c
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -487,14 +487,10 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	static const u16 version = SDHCI_SPEC_400 << SDHCI_SPEC_VER_SHIFT;
 
-	clk = devm_clk_get(dev, NULL);
+	clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 
-	ret = clk_prepare_enable(clk);
-	if (ret)
-		return ret;
-
 	data = of_device_get_match_data(dev);
 	if (!data)
 		data = &sdhci_cdns_drv_data;
@@ -502,10 +498,8 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 	nr_phy_params = sdhci_cdns_phy_param_count(dev->of_node);
 	host = sdhci_pltfm_init(pdev, &data->pltfm_data,
 				struct_size(priv, phy_params, nr_phy_params));
-	if (IS_ERR(host)) {
-		ret = PTR_ERR(host);
-		goto disable_clk;
-	}
+	if (IS_ERR(host))
+		return PTR_ERR(host);
 
 	pltfm_host = sdhci_priv(host);
 	pltfm_host->clk = clk;
@@ -556,9 +550,6 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 	return 0;
 free:
 	sdhci_pltfm_free(pdev);
-disable_clk:
-	clk_disable_unprepare(clk);
-
 	return ret;
 }
 
@@ -617,7 +608,7 @@ static struct platform_driver sdhci_cdns_driver = {
 		.of_match_table = sdhci_cdns_match,
 	},
 	.probe = sdhci_cdns_probe,
-	.remove_new = sdhci_pltfm_unregister,
+	.remove_new = sdhci_pltfm_remove,
 };
 module_platform_driver(sdhci_cdns_driver);
 
-- 
2.34.1