I've sent the patch that remove this one and others similar printk from driver.
>
>
>On Thu, Feb 04, 2021 at 05:07:16AM +0000, Pawel Laszczak wrote:
>> Hi Dan,
>>
>> >> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>> >>
>> >> There is a spelling mistake in a literal string. Fix it.
>> >>
>> >> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>> >> ---
>> >> drivers/usb/cdns3/cdnsp-ep0.c | 2 +-
>> >> 1 file changed, 1 insertion(+), 1 deletion(-)
>> >>
>> >> diff --git a/drivers/usb/cdns3/cdnsp-ep0.c b/drivers/usb/cdns3/cdnsp-ep0.c
>> >> index e2b1bcb3f80e..e30931ebc870 100644
>> >> --- a/drivers/usb/cdns3/cdnsp-ep0.c
>> >> +++ b/drivers/usb/cdns3/cdnsp-ep0.c
>> >> @@ -45,7 +45,7 @@ static int cdnsp_ep0_delegate_req(struct cdnsp_device *pdev,
>> >> {
>> >> int ret;
>> >>
>> >> - trace_cdnsp_ep0_request("delagete");
>> >> + trace_cdnsp_ep0_request("delegate");
>> >>
>> >
>> >This printk is useless and should just be deleted. Use ftrace instead.
>>
>> Maybe this printk is redundant but it's more comfortable in use.
>> To debug I can simply enable cdns-dev events (echo cdnsp-dev:* > set_event)
>> and I will get the full picture of what the driver is doing.
>>
>> Otherwise, I must remember which function I need to add to set_ftrace_filter.
>> Of course, by default I can simply add all cdnsp* functions (echo cdnsp* > set_ftrace_filter) but it
>> increases the trace log and makes it a little more difficult to analyze.
>>
>> So maybe in some cases we shouldn't complain for such printk ?
>>
>> It's my private opinion and not necessarily correct :)
>
>Please don't have duplicate tracepoints for something like "this
>function is now called", it's redundant.
>
Thanks,
Pawel Laszczak
