The commit d08477aa975e ("fcntl: Don't use ambiguous
SIG_POLL si_codes") added BUG_ON for below case,
(reason - POLL_IN) >= NSIGPOLL
Thus some statements become logically dead code and
can be removed.
Signed-off-by: Stanley Chu <stanley.chu@xxxxxxxxxxxx>
---
fs/fcntl.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 083185174c6d..11ec59bf421c 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -762,10 +762,7 @@ static void send_sigio_to_task(struct task_struct *p,
reasons, otherwise we could leak kernel stack into
userspace. */
BUG_ON((reason < POLL_IN) || ((reason - POLL_IN) >= NSIGPOLL));
- if (reason - POLL_IN >= NSIGPOLL)
- si.si_band = ~0L;
- else
- si.si_band = mangle_poll(band_table[reason - POLL_IN]);
+ si.si_band = mangle_poll(band_table[reason - POLL_IN]);
si.si_fd = fd;
if (!do_send_sig_info(signum, &si, p, type))
break;
--
2.18.0
