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authorJiri Slaby <jslaby@suse.cz>2016-10-03 11:18:37 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-10-27 16:37:44 +0200
commit7c918cdceb32c50b3f4a31eec177076c9a151b35 (patch)
tree160622e3e45eb56a4592fb56ace0cca397311215 /drivers/tty
parent210fd7460e755c6de4972bca4ffa9cd9580279aa (diff)
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tty: vt, rename variables to sane names
This makes the code understandable at least. No functional changes. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/vt/vt.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 3cb6504b41d3..804cc3151b13 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -4287,7 +4287,7 @@ void vc_scrolldelta_helper(struct vc_data *c, int lines,
ptrdiff_t vorigin = (void *)c->vc_visible_origin - base;
ptrdiff_t origin = (void *)c->vc_origin - base;
int margin = c->vc_size_row * 4;
- int ul, we, p, st;
+ int from, wrap, from_off, avail;
/* Turn scrollback off */
if (!lines) {
@@ -4297,25 +4297,25 @@ void vc_scrolldelta_helper(struct vc_data *c, int lines,
/* Do we have already enough to allow jumping from 0 to the end? */
if (rolled_over > scr_end + margin) {
- ul = scr_end;
- we = rolled_over + c->vc_size_row;
+ from = scr_end;
+ wrap = rolled_over + c->vc_size_row;
} else {
- ul = 0;
- we = size;
+ from = 0;
+ wrap = size;
}
- p = (vorigin - ul + we) % we + lines * c->vc_size_row;
- st = (origin - ul + we) % we;
+ from_off = (vorigin - from + wrap) % wrap + lines * c->vc_size_row;
+ avail = (origin - from + wrap) % wrap;
/* Only a little piece would be left? Show all incl. the piece! */
- if (st < 2 * margin)
+ if (avail < 2 * margin)
margin = 0;
- if (p < margin)
- p = 0;
- if (p > st - margin)
- p = st;
+ if (from_off < margin)
+ from_off = 0;
+ if (from_off > avail - margin)
+ from_off = avail;
- c->vc_visible_origin = ubase + (p + ul) % we;
+ c->vc_visible_origin = ubase + (from + from_off) % wrap;
}
EXPORT_SYMBOL_GPL(vc_scrolldelta_helper);