diff options
| -rw-r--r-- | drivers/tty/cyclades.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c index 33f83fee9fae..a57bb5ab761c 100644 --- a/drivers/tty/cyclades.c +++ b/drivers/tty/cyclades.c @@ -2709,6 +2709,8 @@ cy_ioctl(struct tty_struct *tty, break; #ifndef CONFIG_CYZ_INTR case CYZSETPOLLCYCLE: + if (arg > LONG_MAX / HZ) + return -ENODEV; cyz_polling_cycle = (arg * HZ) / 1000; break; case CYZGETPOLLCYCLE: |