linux-kernel - [PATCH -next] ARM: imx: add missing clk_disable_unprepare() in imx_mmdc

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Date:   Mon, 17 May 2021 19:15:23 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <linux-imx@....com>, <shawnguo@...nel.org>
Subject: [PATCH -next] ARM: imx: add missing clk_disable_unprepare() in imx_mmdc_remove()

clock source is prepared and enabled by clk_prepare_enable()
in probe function, but no disable or unprepare in remove.

Fixes: 9454a0caff6a ("ARM: imx: add mmdc ipg clock operation for mmdc")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 arch/arm/mach-imx/mmdc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c
index 0dfd0ae7a63d..7d87fa8c70a9 100644
--- a/arch/arm/mach-imx/mmdc.c
+++ b/arch/arm/mach-imx/mmdc.c
@@ -77,6 +77,7 @@ static const struct of_device_id imx_mmdc_dt_ids[] = {
 	{ /* sentinel */ }
 };
 
+struct clk *mmdc_ipg_clk;
 #ifdef CONFIG_PERF_EVENTS
 
 static enum cpuhp_state cpuhp_mmdc_state;
@@ -463,6 +464,7 @@ static int imx_mmdc_remove(struct platform_device *pdev)
 	cpuhp_state_remove_instance_nocalls(cpuhp_mmdc_state, &pmu_mmdc->node);
 	perf_pmu_unregister(&pmu_mmdc->pmu);
 	kfree(pmu_mmdc);
+	clk_disable_unprepare(mmdc_ipg_clk);
 	return 0;
 }
 
@@ -536,7 +538,6 @@ static int imx_mmdc_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	void __iomem *mmdc_base, *reg;
-	struct clk *mmdc_ipg_clk;
 	u32 val;
 	int err;
 
-- 
2.25.1