diff options
| -rw-r--r-- | sound/usb/usx2y/us144mkii_midi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/usb/usx2y/us144mkii_midi.c b/sound/usb/usx2y/us144mkii_midi.c index 5759f601007f..08b04aa39278 100644 --- a/sound/usb/usx2y/us144mkii_midi.c +++ b/sound/usb/usx2y/us144mkii_midi.c @@ -41,6 +41,9 @@ void tascam_midi_in_urb_complete(struct urb *urb) struct tascam_card *tascam = urb->context; int ret; + if (!tascam) + goto out; + if (urb->status) { if (urb->status != -ENOENT && urb->status != -ECONNRESET && urb->status != -ESHUTDOWN && urb->status != -EPROTO) { @@ -51,7 +54,7 @@ void tascam_midi_in_urb_complete(struct urb *urb) goto out; } - if (tascam && atomic_read(&tascam->midi_in_active) && + if (atomic_read(&tascam->midi_in_active) && urb->actual_length > 0) { kfifo_in_spinlocked(&tascam->midi_in_fifo, urb->transfer_buffer, urb->actual_length, &tascam->midi_in_lock); @@ -65,8 +68,9 @@ void tascam_midi_in_urb_complete(struct urb *urb) dev_err(tascam->card->dev, "Failed to resubmit MIDI IN URB: error %d\n", ret); usb_unanchor_urb(urb); - usb_put_urb(urb); + goto out; } + out: usb_put_urb(urb); } |