1 files changed, 52 insertions, 7 deletions

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index f7e1c9f0d3ed..872887624030 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -27,6 +27,7 @@
 #include <linux/pm_qos_params.h>
 #include <linux/uio.h>
 #include <linux/dma-mapping.h>
+#include <linux/math64.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include <sound/info.h>
@@ -366,6 +367,38 @@ static int period_to_usecs(struct snd_pcm_runtime *runtime)
         return usecs;
 }
 
+static int calc_boundary(struct snd_pcm_runtime *runtime)
+{
+        u_int64_t boundary;
+
+        boundary = (u_int64_t)runtime->buffer_size *
+                   (u_int64_t)runtime->period_size;
+#if BITS_PER_LONG < 64
+        /* try to find lowest common multiple for buffer and period */
+        if (boundary > LONG_MAX - runtime->buffer_size) {
+                u_int32_t remainder = -1;
+                u_int32_t divident = runtime->buffer_size;
+                u_int32_t divisor = runtime->period_size;
+                while (remainder) {
+                        remainder = divident % divisor;
+                        if (remainder) {
+                                divident = divisor;
+                                divisor = remainder;
+                        }
+                }
+                boundary = div_u64(boundary, divisor);
+                if (boundary > LONG_MAX - runtime->buffer_size)
+                        return -ERANGE;
+        }
+#endif
+        if (boundary == 0)
+                return -ERANGE;
+        runtime->boundary = boundary;
+        while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
+                runtime->boundary *= 2;
+        return 0;
+}
+
 static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
                              struct snd_pcm_hw_params *params)
 {
@@ -441,9 +474,9 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
         runtime->stop_threshold = runtime->buffer_size;
         runtime->silence_threshold = 0;
         runtime->silence_size = 0;
-        runtime->boundary = runtime->buffer_size;
-        while (runtime->boundary * 2 <= LONG_MAX - runtime->buffer_size)
-                runtime->boundary *= 2;
+        err = calc_boundary(runtime);
+        if (err < 0)
+                goto _error;
 
         snd_pcm_timer_resolution_change(substream);
         runtime->status->state = SNDRV_PCM_STATE_SETUP;
@@ -516,6 +549,7 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
                              struct snd_pcm_sw_params *params)
 {
         struct snd_pcm_runtime *runtime;
+        int err;
 
         if (PCM_RUNTIME_CHECK(substream))
                 return -ENXIO;
@@ -540,6 +574,7 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
                 if (params->silence_threshold > runtime->buffer_size)
                         return -EINVAL;
         }
+        err = 0;
         snd_pcm_stream_lock_irq(substream);
         runtime->tstamp_mode = params->tstamp_mode;
         runtime->period_step = params->period_step;
@@ -553,10 +588,10 @@ static int snd_pcm_sw_params(struct snd_pcm_substream *substream,
                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
                     runtime->silence_size > 0)
                         snd_pcm_playback_silence(substream, ULONG_MAX);
-                wake_up(&runtime->sleep);
+                err = snd_pcm_update_state(substream, runtime);
         }
         snd_pcm_stream_unlock_irq(substream);
-        return 0;
+        return err;
 }
 
 static int snd_pcm_sw_params_user(struct snd_pcm_substream *substream,
@@ -917,6 +952,7 @@ static void snd_pcm_post_stop(struct snd_pcm_substream *substream, int state)
                 runtime->status->state = state;
         }
         wake_up(&runtime->sleep);
+        wake_up(&runtime->tsleep);
 }
 
 static struct action_ops snd_pcm_action_stop = {
@@ -1002,6 +1038,7 @@ static void snd_pcm_post_pause(struct snd_pcm_substream *substream, int push)
                                          SNDRV_TIMER_EVENT_MPAUSE,
                                          &runtime->trigger_tstamp);
                 wake_up(&runtime->sleep);
+                wake_up(&runtime->tsleep);
         } else {
                 runtime->status->state = SNDRV_PCM_STATE_RUNNING;
                 if (substream->timer)
@@ -1059,6 +1096,7 @@ static void snd_pcm_post_suspend(struct snd_pcm_substream *substream, int state)
         runtime->status->suspended_state = runtime->status->state;
         runtime->status->state = SNDRV_PCM_STATE_SUSPENDED;
         wake_up(&runtime->sleep);
+        wake_up(&runtime->tsleep);
 }
 
 static struct action_ops snd_pcm_action_suspend = {
@@ -3162,9 +3200,7 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
         long size;
         unsigned long offset;
 
-#ifdef pgprot_noncached
         area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
-#endif
         area->vm_flags |= VM_IO;
         size = area->vm_end - area->vm_start;
         offset = area->vm_pgoff << PAGE_SHIFT;
@@ -3178,6 +3214,15 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
 EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
 #endif /* SNDRV_PCM_INFO_MMAP */
 
+/* mmap callback with pgprot_noncached */
+int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
+                               struct vm_area_struct *area)
+{
+        area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
+        return snd_pcm_default_mmap(substream, area);
+}
+EXPORT_SYMBOL(snd_pcm_lib_mmap_noncached);
+
 /*
  * mmap DMA buffer
  */