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path: root/drivers/tty/vt/vt.c
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Diffstat (limited to 'drivers/tty/vt/vt.c')
-rw-r--r--drivers/tty/vt/vt.c77
1 files changed, 33 insertions, 44 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 476ec4b1b86c..d673e3592662 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -935,8 +935,11 @@ static void flush_scrollback(struct vc_data *vc)
{
WARN_CONSOLE_UNLOCKED();
+ set_origin(vc);
if (vc->vc_sw->con_flush_scrollback)
vc->vc_sw->con_flush_scrollback(vc);
+ else
+ vc->vc_sw->con_switch(vc);
}
/*
@@ -1056,6 +1059,13 @@ static void visual_init(struct vc_data *vc, int num, int init)
vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row;
}
+
+static void visual_deinit(struct vc_data *vc)
+{
+ vc->vc_sw->con_deinit(vc);
+ module_put(vc->vc_sw->owner);
+}
+
int vc_allocate(unsigned int currcons) /* return 0 on success */
{
struct vt_notifier_param param;
@@ -1103,6 +1113,7 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */
return 0;
err_free:
+ visual_deinit(vc);
kfree(vc);
vc_cons[currcons].d = NULL;
return -ENOMEM;
@@ -1275,6 +1286,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
if (con_is_visible(vc))
update_screen(vc);
vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
+ notify_update(vc);
return err;
}
@@ -1330,9 +1342,8 @@ struct vc_data *vc_deallocate(unsigned int currcons)
param.vc = vc = vc_cons[currcons].d;
atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, &param);
vcs_remove_sysfs(currcons);
- vc->vc_sw->con_deinit(vc);
+ visual_deinit(vc);
put_pid(vc->vt_pid);
- module_put(vc->vc_sw->owner);
vc_uniscr_set(vc, NULL);
kfree(vc->vc_screenbuf);
vc_cons[currcons].d = NULL;
@@ -1505,8 +1516,10 @@ static void csi_J(struct vc_data *vc, int vpar)
count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1;
start = (unsigned short *)vc->vc_origin;
break;
+ case 3: /* include scrollback */
+ flush_scrollback(vc);
+ /* fallthrough */
case 2: /* erase whole display */
- case 3: /* (and scrollback buffer later) */
vc_uniscr_clear_lines(vc, 0, vc->vc_rows);
count = vc->vc_cols * vc->vc_rows;
start = (unsigned short *)vc->vc_origin;
@@ -1515,12 +1528,7 @@ static void csi_J(struct vc_data *vc, int vpar)
return;
}
scr_memsetw(start, vc->vc_video_erase_char, 2 * count);
- if (vpar == 3) {
- set_origin(vc);
- flush_scrollback(vc);
- if (con_is_visible(vc))
- update_screen(vc);
- } else if (con_should_update(vc))
+ if (con_should_update(vc))
do_update_region(vc, (unsigned long) start, count);
vc->vc_need_wrap = 0;
}
@@ -2767,8 +2775,8 @@ rescan_last_byte:
con_flush(vc, draw_from, draw_to, &draw_x);
vc_uniscr_debug_check(vc);
console_conditional_schedule();
- console_unlock();
notify_update(vc);
+ console_unlock();
return n;
}
@@ -2887,8 +2895,7 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
unsigned char c;
static DEFINE_SPINLOCK(printing_lock);
const ushort *start;
- ushort cnt = 0;
- ushort myx;
+ ushort start_x, cnt;
int kmsg_console;
/* console busy or not yet initialized */
@@ -2901,10 +2908,6 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
if (kmsg_console && vc_cons_allocated(kmsg_console - 1))
vc = vc_cons[kmsg_console - 1].d;
- /* read `x' only after setting currcons properly (otherwise
- the `x' macro will read the x of the foreground console). */
- myx = vc->vc_x;
-
if (!vc_cons_allocated(fg_console)) {
/* impossible */
/* printk("vt_console_print: tty %d not allocated ??\n", currcons+1); */
@@ -2919,53 +2922,41 @@ static void vt_console_print(struct console *co, const char *b, unsigned count)
hide_cursor(vc);
start = (ushort *)vc->vc_pos;
-
- /* Contrived structure to try to emulate original need_wrap behaviour
- * Problems caused when we have need_wrap set on '\n' character */
+ start_x = vc->vc_x;
+ cnt = 0;
while (count--) {
c = *b++;
if (c == 10 || c == 13 || c == 8 || vc->vc_need_wrap) {
- if (cnt > 0) {
- if (con_is_visible(vc))
- vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
- vc->vc_x += cnt;
- if (vc->vc_need_wrap)
- vc->vc_x--;
- cnt = 0;
- }
+ if (cnt && con_is_visible(vc))
+ vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, start_x);
+ cnt = 0;
if (c == 8) { /* backspace */
bs(vc);
start = (ushort *)vc->vc_pos;
- myx = vc->vc_x;
+ start_x = vc->vc_x;
continue;
}
if (c != 13)
lf(vc);
cr(vc);
start = (ushort *)vc->vc_pos;
- myx = vc->vc_x;
+ start_x = vc->vc_x;
if (c == 10 || c == 13)
continue;
}
+ vc_uniscr_putc(vc, c);
scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos);
notify_write(vc, c);
cnt++;
- if (myx == vc->vc_cols - 1) {
- vc->vc_need_wrap = 1;
- continue;
- }
- vc->vc_pos += 2;
- myx++;
- }
- if (cnt > 0) {
- if (con_is_visible(vc))
- vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
- vc->vc_x += cnt;
- if (vc->vc_x == vc->vc_cols) {
- vc->vc_x--;
+ if (vc->vc_x == vc->vc_cols - 1) {
vc->vc_need_wrap = 1;
+ } else {
+ vc->vc_pos += 2;
+ vc->vc_x++;
}
}
+ if (cnt && con_is_visible(vc))
+ vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, start_x);
set_cursor(vc);
notify_update(vc);
@@ -4171,8 +4162,6 @@ void do_blank_screen(int entering_gfx)
return;
}
- if (blank_state != blank_normal_wait)
- return;
blank_state = blank_off;
/* don't blank graphics */
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-29 12:52:26 +0000