[PATCH 20/36] tty/vt: consolemap: saner variable names in set_inverse_trans_unicode()

Jiri Slaby
2022-06-07T10:53:38Z

The function uses too vague variable names like i, j, k for iterators, p,
q, p1, p2 for pointers etc.

Rename all these, so that it is clear what is going on:
- dict: for dictionaries.
- d, r, g: for dir, row, glyph iterators -- these are unsigned now.
- dir, row: for directory and row pointers.
- glyph: for the glyph.
- and so on...

This is a lot of shuffling, but the result pays off, IMO.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/tty/vt/consolemap.c | 38 ++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index eb5b4b519baf..3763a73706b2 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -244,33 +244,33 @@ static void set_inverse_transl(struct vc_data *conp, struct uni_pagedict *p,
static void set_inverse_trans_unicode(struct vc_data *conp,
struct uni_pagedict *p)
{
- int i, j, k;
- u16 **p1, *p2;
- u16 *q;
+ unsigned int d, r, g;
+ u16 *inv;

if (!p)
return;
- q = p->inverse_trans_unicode;
- if (!q) {
- q = p->inverse_trans_unicode = kmalloc_array(MAX_GLYPH,
- sizeof(*q), GFP_KERNEL);
- if (!q)
+
+ inv = p->inverse_trans_unicode;
+ if (!inv) {
+ inv = p->inverse_trans_unicode = kmalloc_array(MAX_GLYPH,
+ sizeof(*inv), GFP_KERNEL);
+ if (!inv)
return;
}
- memset(q, 0, MAX_GLYPH * sizeof(*q));
+ memset(inv, 0, MAX_GLYPH * sizeof(*inv));

- for (i = 0; i < UNI_DIRS; i++) {
- p1 = p->uni_pgdir[i];
- if (!p1)
+ for (d = 0; d < UNI_DIRS; d++) {
+ u16 **dir = p->uni_pgdir[d];
+ if (!dir)
continue;
- for (j = 0; j < UNI_DIR_ROWS; j++) {
- p2 = p1[j];
- if (!p2)
+ for (r = 0; r < UNI_DIR_ROWS; r++) {
+ u16 *row = dir[r];
+ if (!row)
continue;
- for (k = 0; k < UNI_ROW_GLYPHS; k++) {
- u16 glyph = p2[k];
- if (glyph < MAX_GLYPH && q[glyph] < 32)
- q[glyph] = UNI(i, j, k);
+ for (g = 0; g < UNI_ROW_GLYPHS; g++) {
+ u16 glyph = row[g];
+ if (glyph < MAX_GLYPH && inv[glyph] < 32)
+ inv[glyph] = UNI(d, r, g);
}
}
}
--
2.36.1