phy: hix5hd2-sata: Check return value of platform_get_resource

This prevent NULL pointer dereference if res is NULL.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/phy-hix5hd2-sata.c b/drivers/phy/phy-hix5hd2-sata.c
index 34915b4..d6b2265 100644 (file)
--- a/drivers/phy/phy-hix5hd2-sata.c
+++ b/drivers/phy/phy-hix5hd2-sata.c
@@ -147,6 +147,9 @@ static int hix5hd2_sata_phy_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!res)
+               return -EINVAL;
+
        priv->base = devm_ioremap(dev, res->start, resource_size(res));
        if (!priv->base)
                return -ENOMEM;