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Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/hda_codec.c7
-rw-r--r--sound/pci/hda/hda_codec.h10
2 files changed, 13 insertions, 4 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 06e99c78515..5d5e8012d6a 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -887,11 +887,10 @@ static struct hda_cache_head *get_alloc_hash(struct hda_cache_rec *cache,
{
u16 idx = key % (u16)ARRAY_SIZE(cache->hash);
u16 cur = cache->hash[idx];
- struct hda_cache_head *info_head = cache->buf.list;
struct hda_cache_head *info;
while (cur != 0xffff) {
- info = &info_head[cur];
+ info = snd_array_elem(&cache->buf, cur);
if (info->key == key)
return info;
cur = info->next;
@@ -901,7 +900,7 @@ static struct hda_cache_head *get_alloc_hash(struct hda_cache_rec *cache,
info = snd_array_new(&cache->buf);
if (!info)
return NULL;
- cur = cache->buf.used - 1; /* the last entry */
+ cur = snd_array_index(&cache->buf, info);
info->key = key;
info->val = 0;
info->next = cache->hash[idx];
@@ -3414,7 +3413,7 @@ void *snd_array_new(struct snd_array *array)
array->list = nlist;
array->alloced = num;
}
- return array->list + (array->used++ * array->elem_size);
+ return snd_array_elem(array, array->used++);
}
/* free the given array elements */
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index a73f0eb9928..ee122b009fd 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -539,6 +539,16 @@ static inline void snd_array_init(struct snd_array *array, unsigned int size,
array->alloc_align = align;
}
+static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
+{
+ return array->list + idx * array->elem_size;
+}
+
+static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
+{
+ return (unsigned long)(ptr - array->list) / array->elem_size;
+}
+
/*
* Structures
*/