These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / sound / core / seq / seq_virmidi.c

diff --git a/kernel/sound/core/seq/seq_virmidi.c b/kernel/sound/core/seq/seq_virmidi.c
index 56e0f4c..81134e0 100644 (file)
--- a/kernel/sound/core/seq/seq_virmidi.c
+++ b/kernel/sound/core/seq/seq_virmidi.c
@@ -155,21 +155,26 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
        struct snd_virmidi *vmidi = substream->runtime->private_data;
        int count, res;
        unsigned char buf[32], *pbuf;
+       unsigned long flags;
 
        if (up) {
                vmidi->trigger = 1;
                if (vmidi->seq_mode == SNDRV_VIRMIDI_SEQ_DISPATCH &&
                    !(vmidi->rdev->flags & SNDRV_VIRMIDI_SUBSCRIBE)) {
-                       snd_rawmidi_transmit_ack(substream, substream->runtime->buffer_size - substream->runtime->avail);
-                       return;         /* ignored */
+                       while (snd_rawmidi_transmit(substream, buf,
+                                                   sizeof(buf)) > 0) {
+                               /* ignored */
+                       }
+                       return;
                }
                if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
                        if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
                                return;
                        vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
                }
+               spin_lock_irqsave(&substream->runtime->lock, flags);
                while (1) {
-                       count = snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
+                       count = __snd_rawmidi_transmit_peek(substream, buf, sizeof(buf));
                        if (count <= 0)
                                break;
                        pbuf = buf;
@@ -179,16 +184,18 @@ static void snd_virmidi_output_trigger(struct snd_rawmidi_substream *substream,
                                        snd_midi_event_reset_encode(vmidi->parser);
                                        continue;
                                }
-                               snd_rawmidi_transmit_ack(substream, res);
+                               __snd_rawmidi_transmit_ack(substream, res);
                                pbuf += res;
                                count -= res;
                                if (vmidi->event.type != SNDRV_SEQ_EVENT_NONE) {
                                        if (snd_seq_kernel_client_dispatch(vmidi->client, &vmidi->event, in_atomic(), 0) < 0)
-                                               return;
+                                               goto out;
                                        vmidi->event.type = SNDRV_SEQ_EVENT_NONE;
                                }
                        }
                }
+       out:
+               spin_unlock_irqrestore(&substream->runtime->lock, flags);
        } else {
                vmidi->trigger = 0;
        }
@@ -254,9 +261,13 @@ static int snd_virmidi_output_open(struct snd_rawmidi_substream *substream)
  */
 static int snd_virmidi_input_close(struct snd_rawmidi_substream *substream)
 {
+       struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
        struct snd_virmidi *vmidi = substream->runtime->private_data;
-       snd_midi_event_free(vmidi->parser);
+
+       write_lock_irq(&rdev->filelist_lock);
        list_del(&vmidi->list);
+       write_unlock_irq(&rdev->filelist_lock);
+       snd_midi_event_free(vmidi->parser);
        substream->runtime->private_data = NULL;
        kfree(vmidi);
        return 0;