linux-kernel - [PATCH 3.16 027/132] ARM: pxa: ssp: Fix "WARNING: invalid free of devm

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Date:   Fri, 20 Sep 2019 15:23:35 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "YueHaibing" <yuehaibing@...wei.com>,
        "Robert Jarzmik" <robert.jarzmik@...e.fr>
Subject: [PATCH 3.16 027/132] ARM: pxa: ssp: Fix "WARNING: invalid free of
 devm_ allocated data"

3.16.74-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: YueHaibing <yuehaibing@...wei.com>

commit 9ee8578d953023cc57e7e736ae48502c707c0210 upstream.

Since commit 1c459de1e645 ("ARM: pxa: ssp: use devm_ functions")
kfree, iounmap, clk_put etc are not needed anymore in remove path.

Fixes: 1c459de1e645 ("ARM: pxa: ssp: use devm_ functions")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
[ commit message spelling fix ]
Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/arm/plat-pxa/ssp.c | 6 ------
 1 file changed, 6 deletions(-)

--- a/arch/arm/plat-pxa/ssp.c
+++ b/arch/arm/plat-pxa/ssp.c
@@ -232,18 +232,12 @@ static int pxa_ssp_probe(struct platform
 
 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;
 
-	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);