regcache_sync() spews warnings when a value was cached for a read-only register as it tries to write all registers no matter whether they are writable or not. This patch adds regmap_wrtieable() checks for avoiding it in regcache_sync_block_single() and regcache_block_raw().
Signed-off-by: Takashi Iwai <[email protected]> --- v1->v2: call regmap_writeable() at the place regcache_reg_preset() is called also fix regcache_sync_block_raw() drivers/base/regmap/regcache.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index f373c35f9e1d..da84f544c544 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -608,7 +608,8 @@ static int regcache_sync_block_single(struct regmap *map, void *block, for (i = start; i < end; i++) { regtmp = block_base + (i * map->reg_stride); - if (!regcache_reg_present(cache_present, i)) + if (!regcache_reg_present(cache_present, i) || + !regmap_writeable(map, regtmp)) continue; val = regcache_get_val(map, block, i); @@ -677,7 +678,8 @@ static int regcache_sync_block_raw(struct regmap *map, void *block, for (i = start; i < end; i++) { regtmp = block_base + (i * map->reg_stride); - if (!regcache_reg_present(cache_present, i)) { + if (!regcache_reg_present(cache_present, i) || + !regmap_writeable(map, regtmp)) { ret = regcache_sync_block_raw_flush(map, &data, base, regtmp); if (ret != 0) -- 2.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
