diff options
Diffstat (limited to 'drivers/base/regmap/regmap.c')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 55d9118d2d6f..ff58f3847c06 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1261,6 +1261,9 @@ int _regmap_write(struct regmap *map, unsigned int reg, int ret; void *context = _regmap_map_get_context(map); + if (!regmap_writeable(map, reg)) + return -EIO; + if (!map->cache_bypass && !map->defer_caching) { ret = regcache_write(map, reg, val); if (ret != 0) @@ -1853,7 +1856,7 @@ int regmap_async_complete(struct regmap *map) int ret; /* Nothing to do with no async support */ - if (!map->bus->async_write) + if (!map->bus || !map->bus->async_write) return 0; trace_regmap_async_complete_start(map->dev); |