Changing the switch() statement to symbolic constants made the compiler (at least clang-9, did not check gcc) notice that there is one enum value that is not handled here: block/t10-pi.c:62:11: error: enumeration value 'T10_PI_TYPE0_PROTECTION' not handled in switch [-Werror,-Wswitch] Add another case for the missing value and do nothing there based on the assumption that the code was working correctly already. Fixes: 9b2061b1a262 ("block: use symbolic constants for t10_pi type") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- block/t10-pi.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/t10-pi.c b/block/t10-pi.c index 0c0120a672f9..055fac923946 100644 --- a/block/t10-pi.c +++ b/block/t10-pi.c @@ -60,6 +60,8 @@ static blk_status_t t10_pi_verify(struct blk_integrity_iter *iter, __be16 csum; switch (type) { + case T10_PI_TYPE0_PROTECTION: + break; case T10_PI_TYPE1_PROTECTION: case T10_PI_TYPE2_PROTECTION: if (pi->app_tag == T10_PI_APP_ESCAPE) -- 2.20.0