[PATCH] arm: omap-iommu: fix return value check in _get_pwrdm()

[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 <vu...@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