From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 15 Jun 2013 14:21:21 +0000 (-0400)
Subject: n_tty: Simplify __receive_buf loop count
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=781ad1c79379c723138945b633121a78e9e5485f;p=openwrt%2Fstaging%2Fblogic.git

n_tty: Simplify __receive_buf loop count

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

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);