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authorLABBE Corentin <clabbe.montjoie@gmail.com>2015-11-12 08:45:52 +0100
committerFelipe Balbi <balbi@ti.com>2015-11-17 11:35:48 -0600
commit89d99aea94a5bf8eae530cd77df40904d382946c (patch)
treec5aff6debc0b48739d851c1fc7f3120e29ea5d76 /drivers/usb
parentusb: dwc3: gadget: let us set lower max_speed (diff)
downloadlinux-dev-89d99aea94a5bf8eae530cd77df40904d382946c.tar.xz
linux-dev-89d99aea94a5bf8eae530cd77df40904d382946c.zip
usb: phy: phy-mxs-usb: fix a possible NULL dereference
of_match_device could return NULL, and so cause a NULL pointer dereference later. Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/phy/phy-mxs-usb.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 4d863ebc117c..b7536af777ab 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -452,10 +452,13 @@ static int mxs_phy_probe(struct platform_device *pdev)
struct clk *clk;
struct mxs_phy *mxs_phy;
int ret;
- const struct of_device_id *of_id =
- of_match_device(mxs_phy_dt_ids, &pdev->dev);
+ const struct of_device_id *of_id;
struct device_node *np = pdev->dev.of_node;
+ of_id = of_match_device(mxs_phy_dt_ids, &pdev->dev);
+ if (!of_id)
+ return -ENODEV;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))