diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/memalloc.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index 1b1c7620cbda..a83553fbedf0 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -10,6 +10,7 @@ #include <linux/mm.h> #include <linux/dma-mapping.h> #include <linux/genalloc.h> +#include <linux/vmalloc.h> #ifdef CONFIG_X86 #include <asm/set_memory.h> #endif @@ -99,10 +100,11 @@ static void snd_free_dev_iram(struct snd_dma_buffer *dmab) * */ -static inline gfp_t snd_mem_get_gfp_flags(const struct device *dev) +static inline gfp_t snd_mem_get_gfp_flags(const struct device *dev, + gfp_t default_gfp) { if (!dev) - return GFP_KERNEL; + return default_gfp; else return (__force gfp_t)(unsigned long)dev; } @@ -123,6 +125,8 @@ static inline gfp_t snd_mem_get_gfp_flags(const struct device *dev) int snd_dma_alloc_pages(int type, struct device *device, size_t size, struct snd_dma_buffer *dmab) { + gfp_t gfp; + if (WARN_ON(!size)) return -ENXIO; if (WARN_ON(!dmab)) @@ -133,8 +137,13 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size, dmab->bytes = 0; switch (type) { case SNDRV_DMA_TYPE_CONTINUOUS: - dmab->area = alloc_pages_exact(size, - snd_mem_get_gfp_flags(device)); + gfp = snd_mem_get_gfp_flags(device, GFP_KERNEL); + dmab->area = alloc_pages_exact(size, gfp); + dmab->addr = 0; + break; + case SNDRV_DMA_TYPE_VMALLOC: + gfp = snd_mem_get_gfp_flags(device, GFP_KERNEL | __GFP_HIGHMEM); + dmab->area = __vmalloc(size, gfp, PAGE_KERNEL); dmab->addr = 0; break; #ifdef CONFIG_HAS_DMA @@ -220,6 +229,9 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab) case SNDRV_DMA_TYPE_CONTINUOUS: free_pages_exact(dmab->area, dmab->bytes); break; + case SNDRV_DMA_TYPE_VMALLOC: + vfree(dmab->area); + break; #ifdef CONFIG_HAS_DMA #ifdef CONFIG_GENERIC_ALLOCATOR case SNDRV_DMA_TYPE_DEV_IRAM: |