ALSA: seq: Fix OSS sysex delivery in OSS emulation

[pandora-kernel.git] / sound / core / seq / oss / seq_oss_readq.c

diff --git a/sound/core/seq/oss/seq_oss_readq.c b/sound/core/seq/oss/seq_oss_readq.c
index 73661c4..7bbc610 100644 (file)
--- a/sound/core/seq/oss/seq_oss_readq.c
+++ b/sound/core/seq/oss/seq_oss_readq.c
@@ -119,6 +119,35 @@ snd_seq_oss_readq_puts(struct seq_oss_readq *q, int dev, unsigned char *data, in
        return 0;
 }
 
+/*
+ * put MIDI sysex bytes; the event buffer may be chained, thus it has
+ * to be expanded via snd_seq_dump_var_event().
+ */
+struct readq_sysex_ctx {
+       struct seq_oss_readq *readq;
+       int dev;
+};
+
+static int readq_dump_sysex(void *ptr, void *buf, int count)
+{
+       struct readq_sysex_ctx *ctx = ptr;
+
+       return snd_seq_oss_readq_puts(ctx->readq, ctx->dev, buf, count);
+}
+
+int snd_seq_oss_readq_sysex(struct seq_oss_readq *q, int dev,
+                           struct snd_seq_event *ev)
+{
+       struct readq_sysex_ctx ctx = {
+               .readq = q,
+               .dev = dev
+       };
+
+       if ((ev->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
+               return 0;
+       return snd_seq_dump_var_event(ev, readq_dump_sysex, &ctx);
+}
+
 /*
  * copy an event to input queue:
  * return zero if enqueued