From: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> The arrays (of strings) that are passed to __sysfs_match_string() are static, so use sysfs_match_string() which does an implicit ARRAY_SIZE() over these arrays. Functionally, this doesn't change anything. The change is more cosmetic. It only shrinks the static arrays by 1 byte each. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> Signed-off-by: Coly Li <colyli@xxxxxxx> --- drivers/md/bcache/sysfs.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 7a88ba4bfbfb..53f70f97241e 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -21,28 +21,24 @@ static const char * const bch_cache_modes[] = { "writethrough", "writeback", "writearound", - "none", - NULL + "none" }; /* Default is 0 ("auto") */ static const char * const bch_stop_on_failure_modes[] = { "auto", - "always", - NULL + "always" }; static const char * const cache_replacement_policies[] = { "lru", "fifo", - "random", - NULL + "random" }; static const char * const error_actions[] = { "unregister", - "panic", - NULL + "panic" }; write_attribute(attach); @@ -333,7 +329,7 @@ STORE(__cached_dev) bch_cached_dev_run(dc); if (attr == &sysfs_cache_mode) { - v = __sysfs_match_string(bch_cache_modes, -1, buf); + v = sysfs_match_string(bch_cache_modes, buf); if (v < 0) return v; @@ -344,7 +340,7 @@ STORE(__cached_dev) } if (attr == &sysfs_stop_when_cache_set_failed) { - v = __sysfs_match_string(bch_stop_on_failure_modes, -1, buf); + v = sysfs_match_string(bch_stop_on_failure_modes, buf); if (v < 0) return v; @@ -794,7 +790,7 @@ STORE(__bch_cache_set) 0, UINT_MAX); if (attr == &sysfs_errors) { - v = __sysfs_match_string(error_actions, -1, buf); + v = sysfs_match_string(error_actions, buf); if (v < 0) return v; @@ -1058,7 +1054,7 @@ STORE(__bch_cache) } if (attr == &sysfs_cache_replacement_policy) { - v = __sysfs_match_string(cache_replacement_policies, -1, buf); + v = sysfs_match_string(cache_replacement_policies, buf); if (v < 0) return v; -- 2.16.4