From: Alexander Stein alexander.stein@ew.tq-group.com
[ Upstream commit fd883d79e4dcd2417c2b80756f22a2ff03b0f6e0 ]
There is no sense in doing a cache sync on REGCACHE_NONE regmaps. Instead of panicking the kernel due to missing cache_ops, return an error to client driver.
Signed-off-by: Alexander Stein alexander.stein@ew.tq-group.com Link: https://lore.kernel.org/r/20230313071812.13577-1-alexander.stein@ew.tq-group... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/base/regmap/regcache.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 773560348337f..b78e4b6e2c9da 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -347,6 +347,9 @@ int regcache_sync(struct regmap *map) const char *name; bool bypass;
+ if (WARN_ON(map->cache_type == REGCACHE_NONE)) + return -EINVAL; + BUG_ON(!map->cache_ops);
map->lock(map->lock_arg); @@ -416,6 +419,9 @@ int regcache_sync_region(struct regmap *map, unsigned int min, const char *name; bool bypass;
+ if (WARN_ON(map->cache_type == REGCACHE_NONE)) + return -EINVAL; + BUG_ON(!map->cache_ops);
map->lock(map->lock_arg);