vt: selection, use rounddown() for start/endline computation

We have a helper called rounddown for these modulo computations. So use
it.

No functional change intended and "objdump -d" proves that.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200316065911.11024-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c
index 582184d..d54a549 100644 (file)
--- a/drivers/tty/vt/selection.c
+++ b/drivers/tty/vt/selection.c
@@ -252,9 +252,9 @@ static int __set_selection_kernel(struct tiocl_selection *v, struct tty_struct *
                }
                break;
        case TIOCL_SELLINE:     /* line-by-line selection */
-               new_sel_start = ps - ps % vc->vc_size_row;
-               new_sel_end = pe + vc->vc_size_row
-                           - pe % vc->vc_size_row - 2;
+               new_sel_start = rounddown(ps, vc->vc_size_row);
+               new_sel_end = rounddown(pe, vc->vc_size_row) +
+                       vc->vc_size_row - 2;
                break;
        case TIOCL_SELPOINTER:
                highlight_pointer(pe);