usb: dwc3: qcom: Improve error handling

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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: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Lee Jones 2019-06-17 13:51:05 +01:00 • committed by Felipe Balbi

parent a6e456209d

commit 7f5d6a4696

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drivers/usb/dwc3/dwc3-qcom.c

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