Merge remote branch 'alsa/devel' into topic/misc

1 files changed, 5 insertions, 2 deletions

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 272f15d19017..b546ac2660f9 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -325,8 +325,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
         if (in_interrupt) {
                 /* we know that one period was processed */
                 /* delta = "expected next hw_ptr" for in_interrupt != 0 */
-                delta = old_hw_ptr - (old_hw_ptr % runtime->period_size)
-                        + runtime->period_size;
+                delta = runtime->hw_ptr_interrupt + runtime->period_size;
                 if (delta > new_hw_ptr) {
                         hw_base += runtime->buffer_size;
                         if (hw_base >= runtime->boundary)
@@ -437,6 +436,10 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
             runtime->silence_size > 0)
                 snd_pcm_playback_silence(substream, new_hw_ptr);
 
+        if (in_interrupt) {
+                runtime->hw_ptr_interrupt = new_hw_ptr -
+                                (new_hw_ptr % runtime->period_size);
+        }
         runtime->hw_ptr_base = hw_base;
         runtime->status->hw_ptr = new_hw_ptr;
         runtime->hw_ptr_jiffies = jiffies;