[PATCH 1/3] usb: dwc3: handle return value of clk_get_rate() correctly

From: Yang Xiwen forbidden405@outlook.com

clk_get_rate() return -ve on error, not 0. Fix it by replacing judging NULL with IS_ERR_VALUE().

Fixes: 6bae0eb5b8bd("usb: dwc3: Calculate REFCLKPER based on reference clock") Signed-off-by: Yang Xiwen forbidden405@outlook.com --- drivers/usb/dwc3/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 4b4fcd8a22..06ff68105e 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -137,7 +137,7 @@ static void dwc3_ref_clk_period(struct dwc3 *dwc)

if (dwc->ref_clk) { rate = clk_get_rate(dwc->ref_clk); - if (!rate) + if (IS_ERR_VALUE(rate)) return; period = NSEC_PER_SEC / rate; } else {