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vt: switch G0/1_charset to an array 

Declare Gx_charset[2] instead of G0_charset and G1_charset. It makes
the code simpler (without ternary operators).

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200615074910.19267-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2020-06-15 09:48:37 +02:00 committed by Greg Kroah-Hartman
parent b4d92b6575
commit b70ec4d97f
2 changed files with 10 additions and 15 deletions
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19
drivers/tty/vt/vt.c
View File

@ -1743,9 +1743,7 @@ static void csi_m(struct vc_data *vc)
* Select primary font, don't display control chars if
* defined, don't set bit 8 on output.
*/
vc->vc_translate = set_translate(vc->state.charset == 0
? vc->state.G0_charset
: vc->state.G1_charset, vc);
vc->vc_translate = set_translate(vc->state.Gx_charset[vc->state.charset], vc);
vc->vc_disp_ctrl = 0;
vc->vc_toggle_meta = 0;
break;
@ -2041,8 +2039,8 @@ static void restore_cur(struct vc_data *vc)
memcpy(&vc->state, &vc->saved_state, sizeof(vc->state));
gotoxy(vc, vc->state.x, vc->state.y);
vc->vc_translate = set_translate(vc->state.charset ? vc->state.G1_charset :
vc->state.G0_charset, vc);
vc->vc_translate = set_translate(vc->state.Gx_charset[vc->state.charset],
vc);
update_attr(vc);
vc->vc_need_wrap = 0;
}
@ -2059,8 +2057,8 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
vc->vc_state = ESnormal;
vc->vc_priv = EPecma;
vc->vc_translate = set_translate(LAT1_MAP, vc);
vc->state.G0_charset = LAT1_MAP;
vc->state.G1_charset = GRAF_MAP;
vc->state.Gx_charset[0] = LAT1_MAP;
vc->state.Gx_charset[1] = GRAF_MAP;
vc->state.charset = 0;
vc->vc_need_wrap = 0;
vc->vc_report_mouse = 0;
@ -2105,8 +2103,7 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
static void vc_setGx(struct vc_data *vc, unsigned int which, int c)
{
unsigned char *charset = which == 0 ? &vc->state.G0_charset :
&vc->state.G1_charset;
unsigned char *charset = &vc->state.Gx_charset[which];
switch (c) {
case '0':
@ -2168,12 +2165,12 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
return;
case 14:
vc->state.charset = 1;
vc->vc_translate = set_translate(vc->state.G1_charset, vc);
vc->vc_translate = set_translate(vc->state.Gx_charset[1], vc);
vc->vc_disp_ctrl = 1;
return;
case 15:
vc->state.charset = 0;
vc->vc_translate = set_translate(vc->state.G0_charset, vc);
vc->vc_translate = set_translate(vc->state.Gx_charset[0], vc);
vc->vc_disp_ctrl = 0;
return;
case 24: case 26:

6
include/linux/console_struct.h
View File

@ -34,8 +34,7 @@ enum vc_intensity {
* @x: cursor's x-position
* @y: cursor's y-position
* @color: foreground & background colors
* @G0_charset: what's G0 slot set to (like GRAF_MAP, LAT1_MAP)
* @G1_charset: what's G1 slot set to (like GRAF_MAP, LAT1_MAP)
* @Gx_charset: what's G0/G1 slot set to (like GRAF_MAP, LAT1_MAP)
* @charset: what character set to use (0=G0 or 1=G1)
* @intensity: see enum vc_intensity for values
* @reverse: reversed foreground/background colors
@ -48,8 +47,7 @@ struct vc_state {
unsigned char color;
unsigned char G0_charset;
unsigned char G1_charset;
unsigned char Gx_charset[2];
unsigned int charset : 1;
/* attribute flags */