ASoC: Fix wm8753 register cache size and initialization

Register cache space was not being allocated for the final register,
causing bugs when it was used.  Allocate space for it.

Also ensure that the final register is displayed in sysfs.

[Commit message rewritten to document actual issue. -- broonie]

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

diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
index e06b0cfe4f2ccafca4453fd396892409290981aa..49c4b2898aff50beaa33e82f1dfcb9c5ea615106 100644 (file)
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -79,7 +79,7 @@ static const u16 wm8753_reg[] = {
        0x0097, 0x0097, 0x0000, 0x0004,
        0x0000, 0x0083, 0x0024, 0x01ba,
        0x0000, 0x0083, 0x0024, 0x01ba,
-       0x0000, 0x0000
+       0x0000, 0x0000, 0x0000
 };
 
 /* codec private data */
@@ -1660,7 +1660,7 @@ static int wm8753_register(struct wm8753_priv *wm8753)
        codec->set_bias_level = wm8753_set_bias_level;
        codec->dai = wm8753_dai;
        codec->num_dai = 2;
-       codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache);
+       codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache) + 1;
        codec->reg_cache = &wm8753->reg_cache;
        codec->private_data = wm8753;