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usb: phy: phy-mxs-usb: fix a possible NULL dereference

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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>
This commit is contained in:
LABBE Corentin 2015-11-12 08:45:52 +01:00 committed by Felipe Balbi
parent b9e51b2b1f
commit 89d99aea94
1 changed files with 5 additions and 2 deletions
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7
drivers/usb/phy/phy-mxs-usb.c
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@ -452,10 +452,13 @@ static int mxs_phy_probe(struct platform_device *pdev)
struct clk *clk; struct clk *clk;
struct mxs_phy *mxs_phy; struct mxs_phy *mxs_phy;
int ret; int ret;
const struct of_device_id *of_id = const struct of_device_id *of_id;
of_match_device(mxs_phy_dt_ids, &pdev->dev);
struct device_node *np = pdev->dev.of_node; 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); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&pdev->dev, res); base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base)) if (IS_ERR(base))