phy: exynos5-usbdrd: Fix off-by-one valid value checking for args->ar…

…gs[0] Current code uses args->args[0] as array subscript of phy_drd->phys[]. So the valid value range for args->args[0] is 0 ... EXYNOS5_DRDPHYS_NUM - 1. Signed-off-by: Axel Lin <[email protected]> Reviewed by: Vivek Gautam <[email protected]> Signed-off-by: Kishon Vijay Abraham I <[email protected]>
powerwareeasyman · Mar 13, 2015 · ecd5fb0 · ecd5fb0
1 parent 2f1bce4
commit ecd5fb0
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c
@@ -531,7 +531,7 @@ static struct phy *exynos5_usbdrd_phy_xlate(struct device *dev,
 {
 	struct exynos5_usbdrd_phy *phy_drd = dev_get_drvdata(dev);
 
-	if (WARN_ON(args->args[0] > EXYNOS5_DRDPHYS_NUM))
+	if (WARN_ON(args->args[0] >= EXYNOS5_DRDPHYS_NUM))
 		return ERR_PTR(-ENODEV);
 
 	return phy_drd->phys[args->args[0]].phy;