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.jo...@linaro.org>
---
drivers/usb/dwc3/dwc3-qcom.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c
index f21fdd6cdd1a..633482926497 100644
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -419,6 +419,9 @@ static int dwc3_qcom_clk_init(struct dwc3_qcom *qcom, int
count)
if (!count || ACPI_HANDLE(dev))
return 0;
+ if (count < 0)
+ return count;
+
qcom->clks = devm_kcalloc(dev, qcom->num_clocks,
sizeof(struct clk *), GFP_KERNEL);
if (!qcom->clks)
--
2.17.1
