Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes

[firefly-linux-kernel-4.4.55.git] / sound / core / rawmidi.c

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index cbbed0db9e560315ae0559c7e5e97786387a5371..849a0ed95054d21826f49b3e274ea98eced5d340 100644 (file)
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -92,16 +92,12 @@ static inline int snd_rawmidi_ready_append(struct snd_rawmidi_substream *substre
               (!substream->append || runtime->avail >= count);
 }
 
-static void snd_rawmidi_input_event_tasklet(unsigned long data)
+static void snd_rawmidi_input_event_work(struct work_struct *work)
 {
-       struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data;
-       substream->runtime->event(substream);
-}
-
-static void snd_rawmidi_output_trigger_tasklet(unsigned long data)
-{
-       struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *)data;
-       substream->ops->trigger(substream, 1);
+       struct snd_rawmidi_runtime *runtime =
+               container_of(work, struct snd_rawmidi_runtime, event_work);
+       if (runtime->event)
+               runtime->event(runtime->substream);
 }
 
 static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)
@@ -110,16 +106,10 @@ static int snd_rawmidi_runtime_create(struct snd_rawmidi_substream *substream)
 
        if ((runtime = kzalloc(sizeof(*runtime), GFP_KERNEL)) == NULL)
                return -ENOMEM;
+       runtime->substream = substream;
        spin_lock_init(&runtime->lock);
        init_waitqueue_head(&runtime->sleep);
-       if (substream->stream == SNDRV_RAWMIDI_STREAM_INPUT)
-               tasklet_init(&runtime->tasklet,
-                            snd_rawmidi_input_event_tasklet,
-                            (unsigned long)substream);
-       else
-               tasklet_init(&runtime->tasklet,
-                            snd_rawmidi_output_trigger_tasklet,
-                            (unsigned long)substream);
+       INIT_WORK(&runtime->event_work, snd_rawmidi_input_event_work);
        runtime->event = NULL;
        runtime->buffer_size = PAGE_SIZE;
        runtime->avail_min = 1;
@@ -150,12 +140,7 @@ static inline void snd_rawmidi_output_trigger(struct snd_rawmidi_substream *subs
 {
        if (!substream->opened)
                return;
-       if (up) {
-               tasklet_schedule(&substream->runtime->tasklet);
-       } else {
-               tasklet_kill(&substream->runtime->tasklet);
-               substream->ops->trigger(substream, 0);
-       }
+       substream->ops->trigger(substream, up);
 }
 
 static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
@@ -163,8 +148,8 @@ static void snd_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, i
        if (!substream->opened)
                return;
        substream->ops->trigger(substream, up);
-       if (!up && substream->runtime->event)
-               tasklet_kill(&substream->runtime->tasklet);
+       if (!up)
+               cancel_work_sync(&substream->runtime->event_work);
 }
 
 int snd_rawmidi_drop_output(struct snd_rawmidi_substream *substream)
@@ -641,10 +626,10 @@ int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,
                return -EINVAL;
        }
        if (params->buffer_size != runtime->buffer_size) {
-               newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+               newbuf = krealloc(runtime->buffer, params->buffer_size,
+                                 GFP_KERNEL);
                if (!newbuf)
                        return -ENOMEM;
-               kfree(runtime->buffer);
                runtime->buffer = newbuf;
                runtime->buffer_size = params->buffer_size;
                runtime->avail = runtime->buffer_size;
@@ -668,10 +653,10 @@ int snd_rawmidi_input_params(struct snd_rawmidi_substream *substream,
                return -EINVAL;
        }
        if (params->buffer_size != runtime->buffer_size) {
-               newbuf = kmalloc(params->buffer_size, GFP_KERNEL);
+               newbuf = krealloc(runtime->buffer, params->buffer_size,
+                                 GFP_KERNEL);
                if (!newbuf)
                        return -ENOMEM;
-               kfree(runtime->buffer);
                runtime->buffer = newbuf;
                runtime->buffer_size = params->buffer_size;
        }
@@ -926,7 +911,7 @@ int snd_rawmidi_receive(struct snd_rawmidi_substream *substream,
        }
        if (result > 0) {
                if (runtime->event)
-                       tasklet_schedule(&runtime->tasklet);
+                       schedule_work(&runtime->event_work);
                else if (snd_rawmidi_ready(substream))
                        wake_up(&runtime->sleep);
        }