From 31ecfbd2efd6ae7c10bfb32c600bf99d1fd369d4 Mon Sep 17 00:00:00 2001
From: Clark Wang <xiaoning.wang@nxp.com>
Date: Mon, 18 Feb 2019 17:14:19 +0800
Subject: [PATCH] MLK-20940-3 codecs: cs42xx8: use single read/write to send
i2c msg
cs42xx8 will call regcache_sync to refresh its register cache. However,
it will send a long msg which length is greater than the max buffer size
of virtual i2c driver. It will cause the regcache_sync operation failed.
So, use the single read/write to send i2c msg in regcache functions.
Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
(cherry picked from commit 0153e60c26a0fdcf463fb16b090511da7e52df0c)
---
sound/soc/codecs/cs42xx8.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/codecs/cs42xx8.c b/sound/soc/codecs/cs42xx8.c
index a6445187b6dcf6..e475e542ba391c 100644
--- a/sound/soc/codecs/cs42xx8.c
+++ b/sound/soc/codecs/cs42xx8.c
@@ -452,6 +452,7 @@ const struct regmap_config cs42xx8_regmap_config = {
.volatile_reg = cs42xx8_volatile_register,
.writeable_reg = cs42xx8_writeable_register,
.cache_type = REGCACHE_RBTREE,
+ .use_single_rw = true,
};
EXPORT_SYMBOL_GPL(cs42xx8_regmap_config);
--
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