On Tue, 12 Dec 2023, Guy Chronister wrote: > Fixed warnings about ENOSYS and bare unsigned without int. > > Signed-off-by: Guy Chronister <guylovesbritt@xxxxxxxxx> > --- > drivers/hid/hid-google-hammer.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/hid/hid-google-hammer.c b/drivers/hid/hid-google-hammer.c > index c6bdb9c4ef3e..d567f020bead 100644 > --- a/drivers/hid/hid-google-hammer.c > +++ b/drivers/hid/hid-google-hammer.c > @@ -324,7 +324,7 @@ static int hammer_kbd_brightness_set_blocking(struct led_classdev *cdev, > } > > ret = hid_hw_output_report(led->hdev, led->buf, sizeof(led->buf)); > - if (ret == -ENOSYS) > + if (ret == -EINVAL) > ret = hid_hw_raw_request(led->hdev, 0, led->buf, > sizeof(led->buf), > HID_OUTPUT_REPORT, Could you please elaborate why this is funcionally correct thing to do? How are you now handling the special case when hdev->ll_driver->output_report() callback doesn't exist for the specific low-level driver? -- Jiri Kosina SUSE Labs