Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / sound / core / pcm_native.c

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 6244911..c49b9d9 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -22,8 +22,9 @@
 #include <linux/mm.h>
 #include <linux/file.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/time.h>
-#include <linux/latency.h>
+#include <linux/pm_qos_params.h>
 #include <linux/uio.h>
 #include <sound/core.h>
 #include <sound/control.h>
@@ -443,9 +444,11 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
        snd_pcm_timer_resolution_change(substream);
        runtime->status->state = SNDRV_PCM_STATE_SETUP;
 
-       remove_acceptable_latency(substream->latency_id);
+       pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+                               substream->latency_id);
        if ((usecs = period_to_usecs(runtime)) >= 0)
-               set_acceptable_latency(substream->latency_id, usecs);
+               pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
+                                       substream->latency_id, usecs);
        return 0;
  _error:
        /* hardware might be unuseable from this time,
@@ -505,7 +508,8 @@ static int snd_pcm_hw_free(struct snd_pcm_substream *substream)
        if (substream->ops->hw_free)
                result = substream->ops->hw_free(substream);
        runtime->status->state = SNDRV_PCM_STATE_OPEN;
-       remove_acceptable_latency(substream->latency_id);
+       pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+               substream->latency_id);
        return result;
 }
 
@@ -3246,14 +3250,17 @@ static int snd_pcm_fasync(int fd, struct file * file, int on)
        struct snd_pcm_file * pcm_file;
        struct snd_pcm_substream *substream;
        struct snd_pcm_runtime *runtime;
-       int err;
+       int err = -ENXIO;
 
+       lock_kernel();
        pcm_file = file->private_data;
        substream = pcm_file->substream;
-       snd_assert(substream != NULL, return -ENXIO);
+       snd_assert(substream != NULL, goto out);
        runtime = substream->runtime;
 
        err = fasync_helper(fd, file, on, &runtime->fasync);
+out:
+       unlock_kernel();
        if (err < 0)
                return err;
        return 0;