diff options
Diffstat (limited to 'sound/core/pcm_native.c')
| -rw-r--r-- | sound/core/pcm_native.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index aa6754da7929..dc9a1355a4ab 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -192,6 +192,21 @@ int snd_pcm_info_user(struct snd_pcm_substream *substream, return err; } +static bool hw_support_mmap(struct snd_pcm_substream *substream) +{ + if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_MMAP)) + return false; + /* check architectures that return -EINVAL from dma_mmap_coherent() */ + /* FIXME: this should be some global flag */ +#if defined(CONFIG_C6X) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) ||\ + defined(CONFIG_PARISC) || defined(CONFIG_XTENSA) + if (!substream->ops->mmap && + substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) + return false; +#endif + return true; +} + #undef RULES_DEBUG #ifdef RULES_DEBUG @@ -369,8 +384,12 @@ int snd_pcm_hw_refine(struct snd_pcm_substream *substream, } hw = &substream->runtime->hw; - if (!params->info) + if (!params->info) { params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES; + if (!hw_support_mmap(substream)) + params->info &= ~(SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID); + } if (!params->fifo_size) { m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); @@ -2069,7 +2088,7 @@ int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream) mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED; if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED; - if (hw->info & SNDRV_PCM_INFO_MMAP) { + if (hw_support_mmap(substream)) { if (hw->info & SNDRV_PCM_INFO_INTERLEAVED) mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED; if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED) |