dma-mapping: remove DMA_MASK_NONE

This value is only used by a PCMCIA driver and not very useful. Signed-off-by: Christoph Hellwig <[email protected]> Acked-by: Dominik Brodowski <[email protected]>
tadfisher · Sep 25, 2020 · 7ae10eb · 7ae10eb
1 parent b9bb694
commit 7ae10eb
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Showing 2 changed files with 1 addition and 3 deletions.
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
@@ -516,7 +516,7 @@ static struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s,
 	p_dev->dev.parent = s->dev.parent;
 	p_dev->dev.release = pcmcia_release_dev;
 	/* by default don't allow DMA */
-	p_dev->dma_mask = DMA_MASK_NONE;
+	p_dev->dma_mask = 0;
 	p_dev->dev.dma_mask = &p_dev->dma_mask;
 	dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no);
 	if (!dev_name(&p_dev->dev))

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
@@ -138,8 +138,6 @@ extern const struct dma_map_ops dma_dummy_ops;
 
 #define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
 
-#define DMA_MASK_NONE	0x0ULL
-
 static inline int valid_dma_direction(int dma_direction)
 {
 	return ((dma_direction == DMA_BIDIRECTIONAL) ||