ALSA: Clean up SG-buffer helper functions and macros

Clean up SG-buffer helper functions and macros.  Helpers take substream
as arguments now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 4 insertions, 9 deletions

diff --git a/sound/pci/trident/trident_memory.c b/sound/pci/trident/trident_memory.c
index 2fe3b1fab53a..f9779e23fe57 100644
--- a/sound/pci/trident/trident_memory.c
+++ b/sound/pci/trident/trident_memory.c
@@ -194,7 +194,6 @@ snd_trident_alloc_sg_pages(struct snd_trident *trident,
         struct snd_util_memblk *blk;
         struct snd_pcm_runtime *runtime = substream->runtime;
         int idx, page;
-        struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
 
         if (snd_BUG_ON(runtime->dma_bytes <= 0 ||
                        runtime->dma_bytes > SNDRV_TRIDENT_MAX_PAGES *
@@ -212,18 +211,14 @@ snd_trident_alloc_sg_pages(struct snd_trident *trident,
                 mutex_unlock(&hdr->block_mutex);
                 return NULL;
         }
-        if (lastpg(blk) - firstpg(blk) >= sgbuf->pages) {
-                snd_printk(KERN_ERR "page calculation doesn't match: allocated pages = %d, trident = %d/%d\n", sgbuf->pages, firstpg(blk), lastpg(blk));
-                __snd_util_mem_free(hdr, blk);
-                mutex_unlock(&hdr->block_mutex);
-                return NULL;
-        }
                            
         /* set TLB entries */
         idx = 0;
         for (page = firstpg(blk); page <= lastpg(blk); page++, idx++) {
-                dma_addr_t addr = sgbuf->table[idx].addr;
-                unsigned long ptr = (unsigned long)sgbuf->table[idx].buf;
+                unsigned long ofs = idx << PAGE_SHIFT;
+                dma_addr_t addr = snd_pcm_sgbuf_get_addr(substream, ofs);
+                unsigned long ptr = (unsigned long)
+                        snd_pcm_sgbuf_get_ptr(substream, ofs);
                 if (! is_valid_page(addr)) {
                         __snd_util_mem_free(hdr, blk);
                         mutex_unlock(&hdr->block_mutex);