On Thu, Feb 28, 2019 at 01:03:24AM -0800, Brendan Higgins wrote: > you could do: > > if (IS_ERR_OR_NULL(ptr)) { > KUNIT_FAIL(test, "ptr is an errno or null: %ld", ptr); > return; > } It's best to not mix error pointers and NULL but when we do mix them, it means that NULL is a special kind of success. Like we try to load a feature and we get back: valid pointer <-- success null <-- feature is disabled. not an error. error pointer <-- feature is broken. fail. regards, dan carpenter