linux-kernel - [PATCH 13/16] mmc: sdhci-pxav2: Use sdhci_pltfm

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Date:   Fri, 11 Aug 2023 16:03:48 +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 13/16] mmc: sdhci-pxav2: 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-pxav2.c | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index a0c8470e9214..b75cbea88b40 100644
--- a/drivers/mmc/host/sdhci-pxav2.c
+++ b/drivers/mmc/host/sdhci-pxav2.c
@@ -268,26 +268,21 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
 	pltfm_host = sdhci_priv(host);
 	pxav2_host = sdhci_pltfm_priv(pltfm_host);
 
-	clk = devm_clk_get(dev, "io");
-	if (IS_ERR(clk) && PTR_ERR(clk) != -EPROBE_DEFER)
-		clk = devm_clk_get(dev, NULL);
+	clk = devm_clk_get_optional_enabled(dev, "io");
+	if (!clk)
+		clk = devm_clk_get_enabled(dev, NULL);
 	if (IS_ERR(clk)) {
 		ret = PTR_ERR(clk);
 		dev_err_probe(dev, ret, "failed to get io clock\n");
 		goto free;
 	}
 	pltfm_host->clk = clk;
-	ret = clk_prepare_enable(clk);
-	if (ret) {
-		dev_err(dev, "failed to enable io clock\n");
-		goto free;
-	}
 
 	clk_core = devm_clk_get_optional_enabled(dev, "core");
 	if (IS_ERR(clk_core)) {
 		ret = PTR_ERR(clk_core);
 		dev_err_probe(dev, ret, "failed to enable core clock\n");
-		goto disable_clk;
+		goto free;
 	}
 
 	host->quirks = SDHCI_QUIRK_BROKEN_ADMA
@@ -339,12 +334,10 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
 
 	ret = sdhci_add_host(host);
 	if (ret)
-		goto disable_clk;
+		goto free;
 
 	return 0;
 
-disable_clk:
-	clk_disable_unprepare(clk);
 free:
 	sdhci_pltfm_free(pdev);
 	return ret;
@@ -358,7 +351,7 @@ static struct platform_driver sdhci_pxav2_driver = {
 		.pm	= &sdhci_pltfm_pmops,
 	},
 	.probe		= sdhci_pxav2_probe,
-	.remove_new	= sdhci_pltfm_unregister,
+	.remove_new	= sdhci_pltfm_remove,
 };
 
 module_platform_driver(sdhci_pxav2_driver);
-- 
2.34.1