linux-kernel - [PATCH] ARM: OMAP2+: Fix an IS_ERR() vs NULL check in _get

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Date:   Fri, 24 Jul 2020 11:54:30 +0800
From:   Jing Xiangfeng <jingxiangfeng@...wei.com>
To:     <tony@...mide.com>, <linux@...linux.org.uk>, <t-kristo@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jingxiangfeng@...wei.com>
Subject: [PATCH] ARM: OMAP2+: Fix an IS_ERR() vs NULL check in _get_pwrdm()

The of_clk_get() function returns error pointers, it never returns NULL.

Fixes: 4ea3711aece4 ("ARM: OMAP2+: omap-iommu.c conversion to ti-sysc")
Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
---
 arch/arm/mach-omap2/omap-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
index 54aff33e55e6..bfa5e1b8dba7 100644
--- a/arch/arm/mach-omap2/omap-iommu.c
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -74,7 +74,7 @@ static struct powerdomain *_get_pwrdm(struct device *dev)
 		return pwrdm;
 
 	clk = of_clk_get(dev->of_node->parent, 0);
-	if (!clk) {
+	if (IS_ERR(clk)) {
 		dev_err(dev, "no fck found\n");
 		return NULL;
 	}
-- 
2.17.1