[PATCH 1/2] ALSA: memalloc: don't use GFP_COMP for non-coherent dma allocations

[Christoph Hellwig]

While not quite as bogus as for the dma-coherent allocations that were
fixed earlier, GFP_COMP for these allocations has no benefits for
the dma-direct case, and can't be supported at all by dma dma-iommu
backend which splits up allocations into smaller orders.  Due to an
oversight in ffcb75458460 that flag stopped being cleared for all
dma allocations, but only got rejected for coherent ones.

Start fixing this by not requesting __GFP_COMP in the sound code, which
is the only place that did this.

Fixes: ffcb75458460 ("dma-mapping: reject __GFP_COMP in dma_alloc_attrs")
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov at gmail.com>
Reported-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
 sound/core/memalloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index 3cf5a87d69eaf3..81025f50a54229 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -542,7 +542,7 @@ static void *snd_dma_noncontig_alloc(struct snd_dma_buffer *dmab, size_t size)
 	void *p;
 
 	sgt = dma_alloc_noncontiguous(dmab->dev.dev, size, dmab->dev.dir,
-				      DEFAULT_GFP | __GFP_COMP, 0);
+				      DEFAULT_GFP, 0);
 #ifdef CONFIG_SND_DMA_SGBUF
 	if (!sgt && !get_dma_ops(dmab->dev.dev)) {
 		if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG)
@@ -820,7 +820,7 @@ static void *snd_dma_noncoherent_alloc(struct snd_dma_buffer *dmab, size_t size)
 	void *p;
 
 	p = dma_alloc_noncoherent(dmab->dev.dev, size, &dmab->addr,
-				  dmab->dev.dir, DEFAULT_GFP | __GFP_COMP);
+				  dmab->dev.dir, DEFAULT_GFP);
 	if (p)
 		dmab->dev.need_sync = dma_need_sync(dmab->dev.dev, dmab->addr);
 	return p;
-- 
2.35.1