On 5/13/23 4:11 PM, Tian Lan wrote: > Thanks Simon and Jens, I will remove the unused reference. > > And I'm sorry again, I'm very fresh in kernel development and still > trying to learn the whole process. Hopefully this is the last time I will > have to make the change (previously, I was compiling the entire kernel and > missed the warning message). Thank you all for being patient with me and > tolerate all the silly mistakes. There should be zero warnings when compiling, so the easiest way to check and catch it would be: $ make -jX -s as that will be quiet unless a warning or error is triggered. -- Jens Axboe