5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Takashi Iwai <tiwai@xxxxxxx>
commit 467fd0e82b6265b8e6cc078a70bd7592574d5c83 upstream.
The commit 3ad796cbc36a ("ALSA: pcm: Use SG-buffer only when direct
DMA is available") introduced a check of the DMA type and this caused
a build error on m68k (and possibly some others) due to the lack of
dma_is_direct() definition. Since the check is needed only for
CONFIG_SND_DMA_SGBUF enablement (i.e. solely x86), use #ifdef instead
of IS_ENABLED() for avoiding such a build error.
Fixes: 3ad796cbc36a ("ALSA: pcm: Use SG-buffer only when direct DMA is available")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Link: https://lore.kernel.org/r/20200707111225.26826-1-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/core/pcm_memory.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -66,8 +66,9 @@ static int do_alloc_pages(struct snd_car
__update_allocated_size(card, size);
mutex_unlock(&card->memory_mutex);
- if (IS_ENABLED(CONFIG_SND_DMA_SGBUF) &&
- (type == SNDRV_DMA_TYPE_DEV_SG || type == SNDRV_DMA_TYPE_DEV_UC_SG) &&
+
+#ifdef CONFIG_SND_DMA_SGBUF
+ if ((type == SNDRV_DMA_TYPE_DEV_SG || type == SNDRV_DMA_TYPE_DEV_UC_SG) &&
!dma_is_direct(get_dma_ops(dev))) {
/* mutate to continuous page allocation */
dev_dbg(dev, "Use continuous page allocator\n");
@@ -76,6 +77,7 @@ static int do_alloc_pages(struct snd_car
else
type = SNDRV_DMA_TYPE_DEV_UC;
}
+#endif /* CONFIG_SND_DMA_SGBUF */
err = snd_dma_alloc_pages(type, dev, size, dmab);
if (!err) {
