[PATCH] phy: inno-usb2-phy: fix off-by-one comparison on port number

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Currently the range check on the port index is off-by-one and a potential
out of bounds write can occur on priv->ports[i]. Fix this by checking the
maximum port using >= INNO_PHY_PORT_NUM rather than > INNO_PHY_PORT_NUM.

Detected by CoverityScan, CID#1466118 ("Out-of-bounds write")

Fixes: ba8b0ee81fbb ("phy: add inno-usb2-phy driver for hi3798cv200 SoC")
Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c 
b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
index 524381249a2b..b51e19402ab0 100644
--- a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
+++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
@@ -167,7 +167,7 @@ static int hisi_inno_phy_probe(struct platform_device *pdev)
                phy_set_drvdata(phy, &priv->ports[i]);
                i++;
 
-               if (i > INNO_PHY_PORT_NUM) {
+               if (i >= INNO_PHY_PORT_NUM) {
                        dev_warn(dev, "Support %d ports in maximum\n", i);
                        break;
                }
-- 
2.17.1