ALSA: pcm: Simplify check for dma_mmap_coherent() availability

We check the availability of dma_mmap_coherent() in hw_support_mmap()
but with an ugly ifdef of lots of arch-checks.  Now we have a nice
CONFIG_ARCH_NO_COHERENT_DMA_MMAP kconfig, and this can be used
together with CONFIG_HAS_DMA check for a cleaner and more
comprehensive check.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 4 deletions

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index b26c7e61d600..2a730f38e375 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -238,10 +238,8 @@ 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)
+        /* architecture supports dma_mmap_coherent()? */
+#if defined(CONFIG_ARCH_NO_COHERENT_DMA_MMAP) || !defined(CONFIG_HAS_DMA)
         if (!substream->ops->mmap &&
             substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
                 return false;