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ALSA: pcm: Protect call to dma_mmap_coherent() by check for HAS_DMA 

If NO_DMA=y:

    sound/core/pcm_native.o: In function `snd_pcm_lib_default_mmap':
    pcm_native.c:(.text+0x144c): undefined reference to `bad_dma_ops'
    pcm_native.c:(.text+0x1474): undefined reference to `dma_common_mmap'

Add a check for HAS_DMA to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Geert Uytterhoeven 2017-07-09 21:31:02 +02:00 committed by Takashi Iwai
parent 20e2b79179
commit abe594c2cf
1 changed files with 1 additions and 1 deletions
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2
sound/core/pcm_native.c
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@ -3502,7 +3502,7 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
}
#endif /* CONFIG_GENERIC_ALLOCATOR */
#ifndef CONFIG_X86 /* for avoiding warnings arch/x86/mm/pat.c */
if (!substream->ops->page &&
if (IS_ENABLED(CONFIG_HAS_DMA) && !substream->ops->page &&
substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
return dma_mmap_coherent(substream->dma_buffer.dev.dev,
area,