Commit 7f5d6a46 authored by Lee Jones's avatar Lee Jones Committed by Felipe Balbi

usb: dwc3: qcom: Improve error handling

dwc3_qcom_clk_init() is called with of_count_phandle_with_args() as an
argument.  If of_count_phandle_with_args() returns an error, the number
of clocks will be a negative value and will lead to undefined behaviour.

Ensure we check for an error before attempting to blindly use the value.
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent a6e45620
......@@ -409,6 +409,9 @@ static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int count)
if (!np || !count)
return 0;
if (count < 0)
return count;
qcom->num_clocks = count;
qcom->clks = devm_kcalloc(dev, qcom->num_clocks,
......
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