ALSA: Add ifdef CONFIG_GENERIC_ALLOCATOR for SNDRV_DMA_TYPE_IRAM code

It turned out that we can't use gen_pool_*() functions on archs
without CONFIG_GENERIC_ALLOCATOR (resulting in missing symbols), since
linux/genalloc.h doesn't provide dummy functions for all.  We'd be
able to fix linux/genalloc.h size, but I take an easier path for
now...

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h
index 510aec4..af99839 100644 (file)
--- a/include/sound/memalloc.h
+++ b/include/sound/memalloc.h
@@ -52,7 +52,11 @@ struct snd_dma_device {
 #else
 #define SNDRV_DMA_TYPE_DEV_SG  SNDRV_DMA_TYPE_DEV /* no SG-buf support */
 #endif
+#ifdef CONFIG_GENERIC_ALLOCATOR
 #define SNDRV_DMA_TYPE_DEV_IRAM                4       /* generic device iram-buffer */
+#else
+#define SNDRV_DMA_TYPE_DEV_IRAM        SNDRV_DMA_TYPE_DEV
+#endif
 
 /*
  * info for buffer allocation

diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index 18c1d47..51a7921 100644 (file)
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -238,6 +238,7 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
                dmab->addr = 0;
                break;
 #ifdef CONFIG_HAS_DMA
+#ifdef CONFIG_GENERIC_ALLOCATOR
        case SNDRV_DMA_TYPE_DEV_IRAM:
                snd_malloc_dev_iram(dmab, size);
                if (dmab->area)
@@ -246,6 +247,7 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
                 * so if we fail to malloc, try to fetch memory traditionally.
                 */
                dmab->dev.type = SNDRV_DMA_TYPE_DEV;
+#endif /* CONFIG_GENERIC_ALLOCATOR */
        case SNDRV_DMA_TYPE_DEV:
                dmab->area = snd_malloc_dev_pages(device, size, &dmab->addr);
                break;
@@ -318,9 +320,11 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab)
                snd_free_pages(dmab->area, dmab->bytes);
                break;
 #ifdef CONFIG_HAS_DMA
+#ifdef CONFIG_GENERIC_ALLOCATOR
        case SNDRV_DMA_TYPE_DEV_IRAM:
                snd_free_dev_iram(dmab);
                break;
+#endif /* CONFIG_GENERIC_ALLOCATOR */
        case SNDRV_DMA_TYPE_DEV:
                snd_free_dev_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
                break;

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 513f095..b71be57 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3199,12 +3199,14 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
                             struct vm_area_struct *area)
 {
        area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
+#ifdef CONFIG_GENERIC_ALLOCATOR
        if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV_IRAM) {
                area->vm_page_prot = pgprot_writecombine(area->vm_page_prot);
                return remap_pfn_range(area, area->vm_start,
                                substream->dma_buffer.addr >> PAGE_SHIFT,
                                area->vm_end - area->vm_start, area->vm_page_prot);
        }
+#endif /* CONFIG_GENERIC_ALLOCATOR */
 #ifdef ARCH_HAS_DMA_MMAP_COHERENT
        if (!substream->ops->page &&
            substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)