3 files changed, 28 insertions, 16 deletions

diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 98ed9a9f0da..98fc0766f88 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -24,6 +24,7 @@
 #include <linux/smp_lock.h>
 #include <linux/slab.h>
 #include <linux/time.h>
+#include <linux/string.h>
 #include <sound/core.h>
 #include <sound/minors.h>
 #include <sound/control.h>
@@ -1137,7 +1138,7 @@ static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
 			goto __unlock;
 		}
 		tbl->oss_id = ch;
-		tbl->name = snd_kmalloc_strdup(str, GFP_KERNEL);
+		tbl->name = kstrdup(str, GFP_KERNEL);
 		if (! tbl->name) {
 			kfree(tbl);
 			goto __unlock;
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 1a805020f57..de7444c586f 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -33,6 +33,7 @@
 #include <linux/time.h>
 #include <linux/vmalloc.h>
 #include <linux/moduleparam.h>
+#include <linux/string.h>
 #include <sound/core.h>
 #include <sound/minors.h>
 #include <sound/pcm.h>
@@ -125,17 +126,26 @@ int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin)
 static long snd_pcm_oss_bytes(snd_pcm_substream_t *substream, long frames)
 {
 	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream);
-	frames = frames_to_bytes(runtime, frames);
+	long buffer_size = snd_pcm_lib_buffer_bytes(substream);
+	long bytes = frames_to_bytes(runtime, frames);
 	if (buffer_size == runtime->oss.buffer_bytes)
-		return frames;
-	return (runtime->oss.buffer_bytes * frames) / buffer_size;
+		return bytes;
+#if BITS_PER_LONG >= 64
+	return runtime->oss.buffer_bytes * bytes / buffer_size;
+#else
+	{
+		u64 bsize = (u64)runtime->oss.buffer_bytes * (u64)bytes;
+		u32 rem;
+		div64_32(&bsize, buffer_size, &rem);
+		return (long)bsize;
+	}
+#endif
 }
 
 static long snd_pcm_alsa_frames(snd_pcm_substream_t *substream, long bytes)
 {
 	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_pcm_uframes_t buffer_size = snd_pcm_lib_buffer_bytes(substream);
+	long buffer_size = snd_pcm_lib_buffer_bytes(substream);
 	if (buffer_size == runtime->oss.buffer_bytes)
 		return bytes_to_frames(runtime, bytes);
 	return bytes_to_frames(runtime, (buffer_size * bytes) / runtime->oss.buffer_bytes);
@@ -464,7 +474,8 @@ static int snd_pcm_oss_change_params(snd_pcm_substream_t *substream)
 	sw_params->tstamp_mode = SNDRV_PCM_TSTAMP_NONE;
 	sw_params->period_step = 1;
 	sw_params->sleep_min = 0;
-	sw_params->avail_min = 1;
+	sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
+		1 : runtime->period_size;
 	sw_params->xfer_align = 1;
 	if (atomic_read(&runtime->mmap_count) ||
 	    (substream->oss.setup && substream->oss.setup->nosilence)) {
@@ -1527,12 +1538,15 @@ static int snd_pcm_oss_get_ptr(snd_pcm_oss_file_t *pcm_oss_file, int stream, str
 			snd_pcm_oss_simulate_fill(substream, delay);
 		info.bytes = snd_pcm_oss_bytes(substream, runtime->status->hw_ptr) & INT_MAX;
 	} else {
-		delay = snd_pcm_oss_bytes(substream, delay) + fixup;
-		info.blocks = delay / runtime->oss.period_bytes;
-		if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		delay = snd_pcm_oss_bytes(substream, delay);
+		if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
 			info.bytes = (runtime->oss.bytes - delay) & INT_MAX;
-		else
+		} else {
+			delay += fixup;
+			info.blocks = delay / runtime->oss.period_bytes;
 			info.bytes = (runtime->oss.bytes + delay) & INT_MAX;
+		}
 	}
 	if (copy_to_user(_info, &info, sizeof(info)))
 		return -EFAULT;
@@ -2347,7 +2361,7 @@ static void snd_pcm_oss_proc_write(snd_info_entry_t *entry,
 					for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next);
 					setup1->next = setup;
 				}
-				template.task_name = snd_kmalloc_strdup(task_name, GFP_KERNEL);
+				template.task_name = kstrdup(task_name, GFP_KERNEL);
 			} else {
 				buffer->error = -ENOMEM;
 			}
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 6bb31009f0b..6430410c6c0 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -663,10 +663,7 @@ static int snd_pcm_plug_playback_channels_mask(snd_pcm_plug_t *plug,
 		bitset_t *dstmask = bs;
 		int err;
 		bitset_one(dstmask, schannels);
-		if (plugin == NULL) {
-			bitset_and(client_vmask, dstmask, schannels);
-			return 0;
-		}
+
 		while (1) {
 			err = plugin->src_channels_mask(plugin, dstmask, &srcmask);
 			if (err < 0)