In the regcache_default_sync, if a register isn't writeable, then
_regmap_write will return an error and the rest of the sync will be
aborted. Avoid this by checking if a register is writeable before
trying to sync it.
Signed-off-by: Dylan Reid <dgr...@chromium.org>
---
drivers/base/regmap/regcache.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 44af125..29b4128 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -253,7 +253,8 @@ static int regcache_default_sync(struct regmap *map,
unsigned int min,
unsigned int val;
int ret;
- if (regmap_volatile(map, reg))
+ if (regmap_volatile(map, reg) ||
+ !regmap_writeable(map, reg))
continue;
ret = regcache_read(map, reg, &val);
--
1.8.1.3.605.g02339dd
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