diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/vt/vt.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index e3f62fffbdd5..71f182416835 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -561,10 +561,11 @@ static void con_scroll(struct vc_data *vc, unsigned int top, unsigned int bottom, enum con_scroll dir, unsigned int nr) { + unsigned int rows = bottom - top; u16 *clear, *dst, *src; if (top + nr >= bottom) - nr = bottom - top - 1; + nr = rows - 1; if (bottom > vc->vc_rows || top >= bottom || nr < 1) return; @@ -577,10 +578,10 @@ static void con_scroll(struct vc_data *vc, unsigned int top, dst = (u16 *)(vc->vc_origin + vc->vc_size_row * (top + nr)); if (dir == SM_UP) { - clear = src + (bottom - top - nr) * vc->vc_cols; + clear = src + (rows - nr) * vc->vc_cols; swap(src, dst); } - scr_memmovew(dst, src, (bottom - top - nr) * vc->vc_size_row); + scr_memmovew(dst, src, (rows - nr) * vc->vc_size_row); scr_memsetw(clear, vc->vc_video_erase_char, vc->vc_size_row * nr); } |