[PATCH v2 09/20] n_tty: Factor raw mode receive_buf() into separate fn

From: Peter Hurley
Date: Sat Jun 15 2013 - 10:22:41 EST


Convert to modal receive_buf() processing; factor raw mode
per-char i/o into n_tty_receive_buf_raw().

Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
drivers/tty/n_tty.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index b7c5ab3..40cc0a5 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1258,11 +1258,6 @@ static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
struct n_tty_data *ldata = tty->disc_data;
int parmrk;

- if (ldata->raw) {
- put_tty_queue(c, ldata);
- return;
- }
-
if (I_ISTRIP(tty))
c &= 0x7f;
if (I_IUCLC(tty) && L_IEXTEN(tty))
@@ -1529,6 +1524,23 @@ n_tty_receive_buf_real_raw(struct tty_struct *tty, const unsigned char *cp,
ldata->read_head += n;
}

+static void
+n_tty_receive_buf_raw(struct tty_struct *tty, const unsigned char *cp,
+ char *fp, int count)
+{
+ struct n_tty_data *ldata = tty->disc_data;
+ char flag = TTY_NORMAL;
+
+ while (count--) {
+ if (fp)
+ flag = *fp++;
+ if (likely(flag == TTY_NORMAL))
+ put_tty_queue(*cp++, ldata);
+ else
+ n_tty_receive_char_flagged(tty, *cp++, flag);
+ }
+}
+
static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *fp, int count)
{
@@ -1536,6 +1548,8 @@ static void __receive_buf(struct tty_struct *tty, const unsigned char *cp,

if (ldata->real_raw)
n_tty_receive_buf_real_raw(tty, cp, fp, count);
+ else if (ldata->raw)
+ n_tty_receive_buf_raw(tty, cp, fp, count);
else {
char flag = TTY_NORMAL;

--
1.8.1.2

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