[PATCH 16/38] vc: move translation out of do_con_write

From: Jiri Slaby
Date: Mon Jun 15 2020 - 03:51:15 EST


Now that we reordered the code and the label, we can eliminate the
translation into a separate function. We call it vc_translate here.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/tty/vt/vt.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 93ad7e004900..0f61dc360067 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -2658,6 +2658,19 @@ static int vc_translate_unicode(struct vc_data *vc, int c, bool *rescan)
return -1;
}

+static int vc_translate(struct vc_data *vc, int *c, bool *rescan)
+{
+ /* Do no translation at all in control states */
+ if (vc->vc_state != ESnormal)
+ return *c;
+
+ if (vc->vc_utf && !vc->vc_disp_ctrl)
+ return *c = vc_translate_unicode(vc, *c, rescan);
+
+ /* no utf or alternate charset mode */
+ return vc_translate_ascii(vc, *c);
+}
+
static inline unsigned char vc_invert_attr(const struct vc_data *vc)
{
if (!vc->vc_can_do_color)
@@ -2726,16 +2739,9 @@ static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int co
inverse = false;
width = 1;

- /* Do no translation at all in control states */
- if (vc->vc_state != ESnormal) {
- tc = c;
- } else if (vc->vc_utf && !vc->vc_disp_ctrl) {
- tc = c = vc_translate_unicode(vc, c, &rescan);
- if (tc == -1)
- continue;
- } else { /* no utf or alternate charset mode */
- tc = vc_translate_ascii(vc, c);
- }
+ tc = vc_translate(vc, &c, &rescan);
+ if (tc == -1)
+ continue;

param.c = tc;
if (atomic_notifier_call_chain(&vt_notifier_list, VT_PREWRITE,
--
2.27.0