diff options
Diffstat (limited to 'kernel/arch/xtensa/platforms')
| -rw-r--r-- | kernel/arch/xtensa/platforms/iss/console.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/arch/xtensa/platforms/iss/console.c b/kernel/arch/xtensa/platforms/iss/console.c index 70cb408bc..92d785fef 100644 --- a/kernel/arch/xtensa/platforms/iss/console.c +++ b/kernel/arch/xtensa/platforms/iss/console.c @@ -100,21 +100,23 @@ static void rs_poll(unsigned long priv) { struct tty_port *port = (struct tty_port *)priv; int i = 0; + int rd = 1; unsigned char c; spin_lock(&timer_lock); while (simc_poll(0)) { - simc_read(0, &c, 1); + rd = simc_read(0, &c, 1); + if (rd <= 0) + break; tty_insert_flip_char(port, c, TTY_NORMAL); i++; } if (i) tty_flip_buffer_push(port); - - - mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE); + if (rd) + mod_timer(&serial_timer, jiffies + SERIAL_TIMER_VALUE); spin_unlock(&timer_lock); } |