diff options
Diffstat (limited to 'sound/core/oss/pcm_oss.c')
| -rw-r--r-- | sound/core/oss/pcm_oss.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 1a805020f57a..de7444c586f9 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; } |