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Diffstat (limited to 'kernel/arch/xtensa/platforms/iss/console.c')
-rw-r--r--kernel/arch/xtensa/platforms/iss/console.c10
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);
}