| Message ID | 865e56dc-37cc-47b1-8d35-9047ecb1984a@stanley.mountain |
|---|---|
| State | New |
| Headers | show |
| Series | usb: dwc3: rtk: Clean up error code in __get_dwc3_maximum_speed() | expand |
On 12/09/2024 10:54, Dan Carpenter wrote: > The __get_dwc3_maximum_speed() function returns an enum type which, in > this context here, is basically unsigned int. On error cases, it's > supposed to return USB_SPEED_UNKNOWN, but it was accidentally changed to > return negative error codes in commit f93e96c544ca ("usb: dwc3: rtk: use > scoped device node handling to simplify error paths"). > > There is only one caller and because of the way that the types work out, > returning negative error codes is not a problem. They will be treated > as greater than USB_SPEED_HIGH and ignored as invalid. So this patch > does not affect run time behavior, it's just a clean up. > > Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Fixes: f93e96c544ca ("usb: dwc3: rtk: use scoped device node handling to simplify error paths") Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Best regards, Krzysztof
diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c index b3db5cd9906e..e9c8b032c72c 100644 --- a/drivers/usb/dwc3/dwc3-rtk.c +++ b/drivers/usb/dwc3/dwc3-rtk.c @@ -184,7 +184,7 @@ static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) ret = of_property_read_string(dwc3_np, "maximum-speed", &maximum_speed); if (ret < 0) - return ret; + return USB_SPEED_UNKNOWN; ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed);
The __get_dwc3_maximum_speed() function returns an enum type which, in this context here, is basically unsigned int. On error cases, it's supposed to return USB_SPEED_UNKNOWN, but it was accidentally changed to return negative error codes in commit f93e96c544ca ("usb: dwc3: rtk: use scoped device node handling to simplify error paths"). There is only one caller and because of the way that the types work out, returning negative error codes is not a problem. They will be treated as greater than USB_SPEED_HIGH and ignored as invalid. So this patch does not affect run time behavior, it's just a clean up. Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> --- drivers/usb/dwc3/dwc3-rtk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)