Merge tag 'v3.10.56' into update

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / core / pcm_lib.c

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 8eddece217bb8bb59950bdc793bb1b2224877362..0a774923a6976babd0550f6b99e2d298982b67f0 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -365,13 +365,17 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
                if (delta > new_hw_ptr) {
                        /* check for double acknowledged interrupts */
                        hdelta = curr_jiffies - runtime->hw_ptr_jiffies;
-                       if (hdelta > runtime->hw_ptr_buffer_jiffies/2) {
+                       //MTK modify+++
+                       //if (hdelta > runtime->hw_ptr_buffer_jiffies/2) {  //Alsa origin
+                       if (hdelta > runtime->hw_ptr_buffer_jiffies*3/4) {  //MTK modified
+                       //MTK modify---
                                hw_base += runtime->buffer_size;
                                if (hw_base >= runtime->boundary) {
                                        hw_base = 0;
                                        crossed_boundary++;
                                }
                                new_hw_ptr = hw_base + pos;
+                               printk("%s, overflow? new_hw_ptr=%ld, hw_base=%ld\n",__FUNCTION__,new_hw_ptr,hw_base);
                                goto __delta;
                        }
                }
@@ -1887,7 +1891,7 @@ static int wait_for_avail(struct snd_pcm_substream *substream,
        if (runtime->no_period_wakeup)
                wait_time = MAX_SCHEDULE_TIMEOUT;
        else {
-               wait_time = 10;
+               wait_time = 3/*10*/;//Modified by MTK
                if (runtime->rate) {
                        long t = runtime->period_size * 2 / runtime->rate;
                        wait_time = max(t, wait_time);