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midi deref bug fixes

This commit is contained in:
Šerif Rami 2025-08-19 19:34:08 +02:00
parent 8f5cb8b21c
commit 7bfaef6c36
1 changed files with 6 additions and 2 deletions
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8
us144mkii_midi.c
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@ -41,6 +41,9 @@ void tascam_midi_in_urb_complete(struct urb *urb)
struct tascam_card *tascam = urb->context; struct tascam_card *tascam = urb->context;
int ret; int ret;
if (!tascam)
goto out;
if (urb->status) { if (urb->status) {
if (urb->status != -ENOENT && urb->status != -ECONNRESET && if (urb->status != -ENOENT && urb->status != -ECONNRESET &&
urb->status != -ESHUTDOWN && urb->status != -EPROTO) { urb->status != -ESHUTDOWN && urb->status != -EPROTO) {
@ -51,7 +54,7 @@ void tascam_midi_in_urb_complete(struct urb *urb)
goto out; goto out;
} }
if (tascam && atomic_read(&tascam->midi_in_active) && if (atomic_read(&tascam->midi_in_active) &&
urb->actual_length > 0) { urb->actual_length > 0) {
kfifo_in_spinlocked(&tascam->midi_in_fifo, urb->transfer_buffer, kfifo_in_spinlocked(&tascam->midi_in_fifo, urb->transfer_buffer,
urb->actual_length, &tascam->midi_in_lock); 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, dev_err(tascam->card->dev,
"Failed to resubmit MIDI IN URB: error %d\n", ret); "Failed to resubmit MIDI IN URB: error %d\n", ret);
usb_unanchor_urb(urb); usb_unanchor_urb(urb);
usb_put_urb(urb); goto out;
} }
out: out:
usb_put_urb(urb); usb_put_urb(urb);
} }