diff options
Diffstat (limited to 'sound/core/oss/pcm_oss.c')
-rw-r--r-- | sound/core/oss/pcm_oss.c | 101 |
1 files changed, 24 insertions, 77 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index cd8b7bef8d06..e49f448ee04f 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -67,18 +67,6 @@ static int snd_pcm_oss_get_rate(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_channels(struct snd_pcm_oss_file *pcm_oss_file); static int snd_pcm_oss_get_format(struct snd_pcm_oss_file *pcm_oss_file); -static inline mm_segment_t snd_enter_user(void) -{ - mm_segment_t fs = get_fs(); - set_fs(get_ds()); - return fs; -} - -static inline void snd_leave_user(mm_segment_t fs) -{ - set_fs(fs); -} - /* * helper functions to process hw_params */ @@ -799,7 +787,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream, static int choose_rate(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, unsigned int best_rate) { - struct snd_interval *it; + const struct snd_interval *it; struct snd_pcm_hw_params *save; unsigned int rate, prev; @@ -807,7 +795,7 @@ static int choose_rate(struct snd_pcm_substream *substream, if (save == NULL) return -ENOMEM; *save = *params; - it = hw_param_interval(save, SNDRV_PCM_HW_PARAM_RATE); + it = hw_param_interval_c(save, SNDRV_PCM_HW_PARAM_RATE); /* try multiples of the best rate */ rate = best_rate; @@ -848,7 +836,7 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream, int direct; snd_pcm_format_t format, sformat; int n; - struct snd_mask sformat_mask; + const struct snd_mask *sformat_mask; struct snd_mask mask; if (trylock) { @@ -891,18 +879,18 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream, format = snd_pcm_oss_format_from(runtime->oss.format); - sformat_mask = *hw_param_mask(sparams, SNDRV_PCM_HW_PARAM_FORMAT); + sformat_mask = hw_param_mask_c(sparams, SNDRV_PCM_HW_PARAM_FORMAT); if (direct) sformat = format; else - sformat = snd_pcm_plug_slave_format(format, &sformat_mask); + sformat = snd_pcm_plug_slave_format(format, sformat_mask); if ((__force int)sformat < 0 || - !snd_mask_test(&sformat_mask, (__force int)sformat)) { + !snd_mask_test(sformat_mask, (__force int)sformat)) { for (sformat = (__force snd_pcm_format_t)0; (__force int)sformat <= (__force int)SNDRV_PCM_FORMAT_LAST; sformat = (__force snd_pcm_format_t)((__force int)sformat + 1)) { - if (snd_mask_test(&sformat_mask, (__force int)sformat) && + if (snd_mask_test(sformat_mask, (__force int)sformat) && snd_pcm_oss_format_to(sformat) >= 0) break; } @@ -1191,14 +1179,8 @@ snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, const if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_write(substream, (void __force __user *)ptr, frames); - } + ret = __snd_pcm_lib_xfer(substream, (void *)ptr, true, + frames, in_kernel); if (ret != -EPIPE && ret != -ESTRPIPE) break; /* test, if we can't store new data, because the stream */ @@ -1234,14 +1216,8 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p ret = snd_pcm_oss_capture_position_fixup(substream, &delay); if (ret < 0) break; - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_read(substream, (void __force __user *)ptr, frames); - } + ret = __snd_pcm_lib_xfer(substream, (void *)ptr, true, + frames, in_kernel); if (ret == -EPIPE) { if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) { ret = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL); @@ -1256,7 +1232,8 @@ snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, char *p return ret; } -snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +#ifdef CONFIG_SND_PCM_OSS_PLUGINS +snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; int ret; @@ -1273,14 +1250,7 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_writev(substream, (void __user **)bufs, frames); - } + ret = snd_pcm_kernel_writev(substream, bufs, frames); if (ret != -EPIPE && ret != -ESTRPIPE) break; @@ -1292,7 +1262,7 @@ snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, void return ret; } -snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel) +snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void **bufs, snd_pcm_uframes_t frames) { struct snd_pcm_runtime *runtime = substream->runtime; int ret; @@ -1313,19 +1283,13 @@ snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, void * if (ret < 0) break; } - if (in_kernel) { - mm_segment_t fs; - fs = snd_enter_user(); - ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); - snd_leave_user(fs); - } else { - ret = snd_pcm_lib_readv(substream, (void __user **)bufs, frames); - } + ret = snd_pcm_kernel_readv(substream, bufs, frames); if (ret != -EPIPE && ret != -ESTRPIPE) break; } return ret; } +#endif /* CONFIG_SND_PCM_OSS_PLUGINS */ static ssize_t snd_pcm_oss_write2(struct snd_pcm_substream *substream, const char *buf, size_t bytes, int in_kernel) { @@ -1650,27 +1614,10 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file) size = runtime->control->appl_ptr % runtime->period_size; if (size > 0) { size = runtime->period_size - size; - if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { - size = (runtime->frame_bits * size) / 8; - while (size > 0) { - mm_segment_t fs; - size_t size1 = size < runtime->oss.period_bytes ? size : runtime->oss.period_bytes; - size -= size1; - size1 *= 8; - size1 /= runtime->sample_bits; - snd_pcm_format_set_silence(runtime->format, - runtime->oss.buffer, - size1); - size1 /= runtime->channels; /* frames */ - fs = snd_enter_user(); - snd_pcm_lib_write(substream, (void __force __user *)runtime->oss.buffer, size1); - snd_leave_user(fs); - } - } else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { - void __user *buffers[runtime->channels]; - memset(buffers, 0, runtime->channels * sizeof(void *)); - snd_pcm_lib_writev(substream, buffers, size); - } + if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) + snd_pcm_lib_write(substream, NULL, size); + else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) + snd_pcm_lib_writev(substream, NULL, size); } mutex_unlock(&runtime->oss.params_lock); /* @@ -1780,7 +1727,7 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) int direct; struct snd_pcm_hw_params *params; unsigned int formats = 0; - struct snd_mask format_mask; + const struct snd_mask *format_mask; int fmt; if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0) @@ -1802,12 +1749,12 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file) return -ENOMEM; _snd_pcm_hw_params_any(params); err = snd_pcm_hw_refine(substream, params); - format_mask = *hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + format_mask = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT); kfree(params); if (err < 0) return err; for (fmt = 0; fmt < 32; ++fmt) { - if (snd_mask_test(&format_mask, fmt)) { + if (snd_mask_test(format_mask, fmt)) { int f = snd_pcm_oss_format_to(fmt); if (f >= 0) formats |= f; |