n_tty: Simplify __receive_buf loop count

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index d598436d9bc6..4f20bec011fb 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1505,21 +1505,19 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
                 memcpy(read_buf_addr(ldata, head), cp, n);
                 ldata->read_head += n;
         } else {
-                int i;
-
-                for (i = count; i; i--, cp++) {
+                while (count--) {
                         if (fp)
                                 flags = *fp++;
                         switch (flags) {
                         case TTY_NORMAL:
-                                n_tty_receive_char(tty, *cp);
+                                n_tty_receive_char(tty, *cp++);
                                 break;
                         case TTY_BREAK:
                                 n_tty_receive_break(tty);
                                 break;
                         case TTY_PARITY:
                         case TTY_FRAME:
-                                n_tty_receive_parity_error(tty, *cp);
+                                n_tty_receive_parity_error(tty, *cp++);
                                 break;
                         case TTY_OVERRUN:
                                 n_tty_receive_overrun(tty);