tty: Fix up char drivers request_room usage

We can't change them all but quite a few misuse it.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index 452370af95de..986aa606a6b6 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -658,8 +658,7 @@ static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id)
                         info->mon.char_max = char_count;
                 info->mon.char_last = char_count;
 #endif
-                len = tty_buffer_request_room(tty, char_count);
-                while (len--) {
+                while (char_count--) {
                         data = base_addr[CyRDR];
                         tty_insert_flip_char(tty, data, TTY_NORMAL);
 #ifdef CYCLOM_16Y_HACK