diff options
Diffstat (limited to 'drivers/char/vt.c')
| -rw-r--r-- | drivers/char/vt.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 665103ccaee8..b8d0c290b0db 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -434,21 +434,25 @@ void invert_screen(struct vc_data *vc, int offset, int count, int viewed) /* used by selection: complement pointer position */ void complement_pos(struct vc_data *vc, int offset) { - static unsigned short *p; + static int old_offset = -1; static unsigned short old; static unsigned short oldx, oldy; WARN_CONSOLE_UNLOCKED(); - if (p) { - scr_writew(old, p); + if (old_offset != -1 && old_offset >= 0 && + old_offset < vc->vc_screenbuf_size) { + scr_writew(old, screenpos(vc, old_offset, 1)); if (DO_UPDATE(vc)) vc->vc_sw->con_putc(vc, old, oldy, oldx); } - if (offset == -1) - p = NULL; - else { + + old_offset = offset; + + if (offset != -1 && offset >= 0 && + offset < vc->vc_screenbuf_size) { unsigned short new; + unsigned short *p; p = screenpos(vc, offset, 1); old = scr_readw(p); new = old ^ vc->vc_complement_mask; @@ -459,6 +463,7 @@ void complement_pos(struct vc_data *vc, int offset) vc->vc_sw->con_putc(vc, new, oldy, oldx); } } + } static void insert_char(struct vc_data *vc, unsigned int nr) @@ -2272,7 +2277,9 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) ret = paste_selection(tty); break; case TIOCL_UNBLANKSCREEN: + acquire_console_sem(); unblank_screen(); + release_console_sem(); break; case TIOCL_SELLOADLUT: ret = sel_loadlut(p); @@ -2317,8 +2324,10 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) } break; case TIOCL_BLANKSCREEN: /* until explicitly unblanked, not only poked */ + acquire_console_sem(); ignore_poke = 1; do_blank_screen(0); + release_console_sem(); break; case TIOCL_BLANKEDSCREEN: ret = console_blanked; |