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* [PATCH] arm: omap-iommu: fix return value check in _get_pwrdm()
@ 2020-07-13  2:45 Xu Wang
  0 siblings, 0 replies; only message in thread
From: Xu Wang @ 2020-07-13  2:45 UTC (permalink / raw)
  To: tony, linux, linux-arm-kernel, linux-omap, linux-kernel; +Cc: Xu Wang

In case of error, function of_clk_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
---
 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


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2020-07-13  2:45 [PATCH] arm: omap-iommu: fix return value check in _get_pwrdm() Xu Wang

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