ALSA: usb-audio: scarlett2: Remove interrupt debug message

Just ignore instead of printing an error if the interrupt data is not
the expected length. This check was for development and the condition
has not been observed.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164632.GA9186@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c
index a5f5c537e3442752552988d48585eb0fed5519e8..3225ec709d983a051b42939fcea88f4634d02dfb 100644 (file)
--- a/sound/usb/mixer_scarlett_gen2.c
+++ b/sound/usb/mixer_scarlett_gen2.c
@@ -2018,19 +2018,14 @@ static void scarlett2_mixer_interrupt(struct urb *urb)
        int ustatus = urb->status;
        u32 data;
 
-       if (ustatus != 0)
+       if (ustatus != 0 || len != 8)
                goto requeue;
 
-       if (len == 8) {
-               data = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
-               if (data & SCARLETT2_USB_INTERRUPT_VOL_CHANGE)
-                       scarlett2_mixer_interrupt_vol_change(mixer);
-               if (data & SCARLETT2_USB_INTERRUPT_BUTTON_CHANGE)
-                       scarlett2_mixer_interrupt_button_change(mixer);
-       } else {
-               usb_audio_err(mixer->chip,
-                             "scarlett mixer interrupt length %d\n", len);
-       }
+       data = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
+       if (data & SCARLETT2_USB_INTERRUPT_VOL_CHANGE)
+               scarlett2_mixer_interrupt_vol_change(mixer);
+       if (data & SCARLETT2_USB_INTERRUPT_BUTTON_CHANGE)
+               scarlett2_mixer_interrupt_button_change(mixer);
 
 requeue:
        if (ustatus != -ENOENT &&