ASoC: Fix register cache sync register_writable WARN_ONs

Currently the condition for these WARN_ONs is reversed and they are placed
before the actual check whether we are going to write to that register. So if
the codec implements the register_writable callback we'll get a warning for each
writable register when syncing the register cache.

While we are at it change the check to use snd_soc_codec_writable_register
instead of open-coding it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index d9f8ade..20b7f3b 100644 (file)
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -203,14 +203,14 @@ static int snd_soc_rbtree_cache_sync(struct snd_soc_codec *codec)
                rbnode = rb_entry(node, struct snd_soc_rbtree_node, node);
                for (i = 0; i < rbnode->blklen; ++i) {
                        regtmp = rbnode->base_reg + i;
-                       WARN_ON(codec->writable_register &&
-                               codec->writable_register(codec, regtmp));
                        val = snd_soc_rbtree_get_register(rbnode, i);
                        def = snd_soc_get_cache_val(codec->reg_def_copy, i,
                                                    rbnode->word_size);
                        if (val == def)
                                continue;
 
+                       WARN_ON(!snd_soc_codec_writable_register(codec, regtmp));
+
                        codec->cache_bypass = 1;
                        ret = snd_soc_write(codec, regtmp, val);
                        codec->cache_bypass = 0;
@@ -563,8 +563,7 @@ static int snd_soc_lzo_cache_sync(struct snd_soc_codec *codec)
 
        lzo_blocks = codec->reg_cache;
        for_each_set_bit(i, lzo_blocks[0]->sync_bmp, lzo_blocks[0]->sync_bmp_nbits) {
-               WARN_ON(codec->writable_register &&
-                       codec->writable_register(codec, i));
+               WARN_ON(!snd_soc_codec_writable_register(codec, i));
                ret = snd_soc_cache_read(codec, i, &val);
                if (ret)
                        return ret;
@@ -823,8 +822,6 @@ static int snd_soc_flat_cache_sync(struct snd_soc_codec *codec)
 
        codec_drv = codec->driver;
        for (i = 0; i < codec_drv->reg_cache_size; ++i) {
-               WARN_ON(codec->writable_register &&
-                       codec->writable_register(codec, i));
                ret = snd_soc_cache_read(codec, i, &val);
                if (ret)
                        return ret;
@@ -832,6 +829,9 @@ static int snd_soc_flat_cache_sync(struct snd_soc_codec *codec)
                        if (snd_soc_get_cache_val(codec->reg_def_copy,
                                                  i, codec_drv->reg_word_size) == val)
                                continue;
+
+               WARN_ON(!snd_soc_codec_writable_register(codec, i));
+
                ret = snd_soc_write(codec, i, val);
                if (ret)
                        return ret;