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Subject[PATCH] Usb: host - Fix possible NULL derefrence.
Date
of_device_get_match_data could return NULL, and so can cause
a NULL pointer dereference later.

Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
---
drivers/usb/host/xhci-tegra.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index a59fafb..890c778 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -903,6 +903,10 @@ static int tegra_xusb_probe(struct platform_device *pdev)
return -ENOMEM;

tegra->soc = of_device_get_match_data(&pdev->dev);
+ if (!tegra->soc) {
+ dev_err(&pdev->dev, "no device match found\n");
+ return -ENODEV;
+ }
mutex_init(&tegra->lock);
tegra->dev = &pdev->dev;

--
1.7.9.5
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