diff options
Diffstat (limited to 'include/sound/memalloc.h')
| -rw-r--r-- | include/sound/memalloc.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h index 3b47832b1c1f..5daa937684a4 100644 --- a/include/sound/memalloc.h +++ b/include/sound/memalloc.h @@ -94,7 +94,11 @@ static inline dma_addr_t snd_sgbuf_get_addr(struct snd_dma_buffer *dmab, size_t offset) { struct snd_sg_buf *sgbuf = dmab->private_data; - dma_addr_t addr = sgbuf->table[offset >> PAGE_SHIFT].addr; + dma_addr_t addr; + + if (!sgbuf) + return dmab->addr + offset; + addr = sgbuf->table[offset >> PAGE_SHIFT].addr; addr &= ~((dma_addr_t)PAGE_SIZE - 1); return addr + offset % PAGE_SIZE; } @@ -106,6 +110,9 @@ static inline void *snd_sgbuf_get_ptr(struct snd_dma_buffer *dmab, size_t offset) { struct snd_sg_buf *sgbuf = dmab->private_data; + + if (!sgbuf) + return dmab->area + offset; return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE; } |