ALSA: memalloc: Correctly name as WC

SNDRV_DMA_TYPE_DEV_UC and SNDRV_DMA_TYPE_DEV_UC_SG are incorrectly
named as if they were for the uncached memory, while actually we set
the pages as write-combined.  Rename them to reflect the right
attribute.

Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210802072815.13551-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/memalloc.h

@@ -31,13 +31,13 @@ struct snd_dma_device {
 #define SNDRV_DMA_TYPE_UNKNOWN		0	/* not defined */
 #define SNDRV_DMA_TYPE_CONTINUOUS	1	/* continuous no-DMA memory */
 #define SNDRV_DMA_TYPE_DEV		2	/* generic device continuous */
-#define SNDRV_DMA_TYPE_DEV_UC		5	/* continuous non-cahced */
+#define SNDRV_DMA_TYPE_DEV_WC		5	/* continuous write-combined */
 #ifdef CONFIG_SND_DMA_SGBUF
 #define SNDRV_DMA_TYPE_DEV_SG		3	/* generic device SG-buffer */
-#define SNDRV_DMA_TYPE_DEV_UC_SG	6	/* SG non-cached */
+#define SNDRV_DMA_TYPE_DEV_WC_SG	6	/* SG write-combined */
 #else
 #define SNDRV_DMA_TYPE_DEV_SG	SNDRV_DMA_TYPE_DEV /* no SG-buf support */
-#define SNDRV_DMA_TYPE_DEV_UC_SG	SNDRV_DMA_TYPE_DEV_UC
+#define SNDRV_DMA_TYPE_DEV_WC_SG	SNDRV_DMA_TYPE_DEV_WC
 #endif
 #ifdef CONFIG_GENERIC_ALLOCATOR
 #define SNDRV_DMA_TYPE_DEV_IRAM		4	/* generic device iram-buffer */

sound/core/memalloc.c

@@ -387,7 +387,7 @@ static void *snd_dma_dev_alloc(struct snd_dma_buffer *dmab, size_t size)
 		| __GFP_NOWARN; /* no stack trace print - this call is non-critical */
 	p = dma_alloc_coherent(dmab->dev.dev, size, &dmab->addr, gfp_flags);
 #ifdef CONFIG_X86
-	if (p && dmab->dev.type == SNDRV_DMA_TYPE_DEV_UC)
+	if (p && dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC)
 		set_memory_wc((unsigned long)p, PAGE_ALIGN(size) >> PAGE_SHIFT);
 #endif
 	return p;
@@ -396,7 +396,7 @@ static void *snd_dma_dev_alloc(struct snd_dma_buffer *dmab, size_t size)
 static void snd_dma_dev_free(struct snd_dma_buffer *dmab)
 {
 #ifdef CONFIG_X86
-	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_UC)
+	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC)
 		set_memory_wb((unsigned long)dmab->area,
 			      PAGE_ALIGN(dmab->bytes) >> PAGE_SHIFT);
 #endif
@@ -425,14 +425,14 @@ static const struct snd_malloc_ops *dma_ops[] = {
 	[SNDRV_DMA_TYPE_VMALLOC] = &snd_dma_vmalloc_ops,
 #ifdef CONFIG_HAS_DMA
 	[SNDRV_DMA_TYPE_DEV] = &snd_dma_dev_ops,
-	[SNDRV_DMA_TYPE_DEV_UC] = &snd_dma_dev_ops,
+	[SNDRV_DMA_TYPE_DEV_WC] = &snd_dma_dev_ops,
 #ifdef CONFIG_GENERIC_ALLOCATOR
 	[SNDRV_DMA_TYPE_DEV_IRAM] = &snd_dma_iram_ops,
 #endif /* CONFIG_GENERIC_ALLOCATOR */
 #endif /* CONFIG_HAS_DMA */
 #ifdef CONFIG_SND_DMA_SGBUF
 	[SNDRV_DMA_TYPE_DEV_SG] = &snd_dma_sg_ops,
-	[SNDRV_DMA_TYPE_DEV_UC_SG] = &snd_dma_sg_ops,
+	[SNDRV_DMA_TYPE_DEV_WC_SG] = &snd_dma_sg_ops,
 #endif
 };
 

sound/core/sgbuf.c

@@ -43,8 +43,8 @@ static void snd_dma_sg_free(struct snd_dma_buffer *dmab)
 	dmab->area = NULL;
 
 	tmpb.dev.type = SNDRV_DMA_TYPE_DEV;
-	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_UC_SG)
-		tmpb.dev.type = SNDRV_DMA_TYPE_DEV_UC;
+	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG)
+		tmpb.dev.type = SNDRV_DMA_TYPE_DEV_WC;
 	tmpb.dev.dev = sgbuf->dev;
 	for (i = 0; i < sgbuf->pages; i++) {
 		if (!(sgbuf->table[i].addr & ~PAGE_MASK))
@@ -77,8 +77,8 @@ static void *snd_dma_sg_alloc(struct snd_dma_buffer *dmab, size_t size)
 	dmab->private_data = sgbuf = kzalloc(sizeof(*sgbuf), GFP_KERNEL);
 	if (!sgbuf)
 		return NULL;
-	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_UC_SG) {
-		type = SNDRV_DMA_TYPE_DEV_UC;
+	if (dmab->dev.type == SNDRV_DMA_TYPE_DEV_WC_SG) {
+		type = SNDRV_DMA_TYPE_DEV_WC;
 #ifdef pgprot_noncached
 		prot = pgprot_noncached(PAGE_KERNEL);
 #endif

sound/pci/hda/hda_controller.c

@@ -753,7 +753,7 @@ int snd_hda_attach_pcm_stream(struct hda_bus *_bus, struct hda_codec *codec,
 	if (size > MAX_PREALLOC_SIZE)
 		size = MAX_PREALLOC_SIZE;
 	if (chip->uc_buffer)
-		type = SNDRV_DMA_TYPE_DEV_UC_SG;
+		type = SNDRV_DMA_TYPE_DEV_WC_SG;
 	snd_pcm_set_managed_buffer_all(pcm, type, chip->card->dev,
 				       size, MAX_PREALLOC_SIZE);
 	return 0;

sound/pci/hda/hda_intel.c

@@ -1807,7 +1807,7 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
 
 	/* use the non-cached pages in non-snoop mode */
 	if (!azx_snoop(chip))
-		azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_UC;
+		azx_bus(chip)->dma_type = SNDRV_DMA_TYPE_DEV_WC;
 
 	if (chip->driver_type == AZX_DRIVER_NVIDIA) {
 		dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n");

sound/pci/intel8x0.c

@@ -1427,7 +1427,7 @@ struct ich_pcm_table {
 };
 
 #define intel8x0_dma_type(chip) \
-	((chip)->fix_nocache ? SNDRV_DMA_TYPE_DEV_UC : SNDRV_DMA_TYPE_DEV)
+	((chip)->fix_nocache ? SNDRV_DMA_TYPE_DEV_WC : SNDRV_DMA_TYPE_DEV)
 
 static int snd_intel8x0_pcm1(struct intel8x0 *chip, int device,
 			     const struct ich_pcm_table *rec)

sound/x86/intel_hdmi_audio.c

@@ -1776,7 +1776,7 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
 		/* allocate dma pages;
 		 * try to allocate 600k buffer as default which is large enough
 		 */
-		snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_UC,
+		snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_WC,
 					       card->dev, HAD_DEFAULT_BUFFER,
 					       HAD_MAX_BUFFER);