linux-kernel - [PATCH -next] ARM: pxa: ssp: Fix "WARNING: invalid free of devm

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Message-ID: <20190129080324.18708-1-yuehaibing@huawei.com>
Date:   Tue, 29 Jan 2019 16:03:24 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <linux@...linux.org.uk>, <daniel@...que.org>,
        <robert.jarzmik@...e.fr>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] ARM: pxa: ssp: Fix "WARNING: invalid free of devm_ allocated data"

Since commit 1c459de1e645 ("ARM: pxa: ssp: use devm_ functions")
kfree, iounmap, clk_put etc no need do any more in remove path.

Fixes: 1c459de1e645 ("ARM: pxa: ssp: use devm_ functions")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 arch/arm/plat-pxa/ssp.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/arm/plat-pxa/ssp.c b/arch/arm/plat-pxa/ssp.c
index ed36dca..bf25f78 100644
--- a/arch/arm/plat-pxa/ssp.c
+++ b/arch/arm/plat-pxa/ssp.c
@@ -183,25 +183,16 @@ static int pxa_ssp_probe(struct platform_device *pdev)
 
 static int pxa_ssp_remove(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct ssp_device *ssp;
 
 	ssp = platform_get_drvdata(pdev);
 	if (ssp == NULL)
 		return -ENODEV;
 
-	iounmap(ssp->mmio_base);
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(res->start, resource_size(res));
-
-	clk_put(ssp->clk);
-
 	mutex_lock(&ssp_lock);
 	list_del(&ssp->node);
 	mutex_unlock(&ssp_lock);
 
-	kfree(ssp);
 	return 0;
 }
 
-- 
2.7.0