Commit 018047a1 authored by Pan Bian's avatar Pan Bian Committed by Felipe Balbi

usb: dwc3: keystone: check return value

Function devm_clk_get() returns an ERR_PTR when it fails. However, in
function kdwc3_probe(), its return value is not checked, which may
result in a bad memory access bug. This patch fixes the bug.
Signed-off-by: default avatarPan Bian <bianpan2016@163.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent b7f73850
......@@ -107,6 +107,10 @@ static int kdwc3_probe(struct platform_device *pdev)
return PTR_ERR(kdwc->usbss);
kdwc->clk = devm_clk_get(kdwc->dev, "usb");
if (IS_ERR(kdwc->clk)) {
dev_err(kdwc->dev, "unable to get usb clock\n");
return PTR_ERR(kdwc->clk);
}
error = clk_prepare_enable(kdwc->clk);
if (error < 0) {
......
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