linux-kernel - [PATCH 4/7] tty/vt: consolemap: saner variable names in set_inverse

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Message-Id: <20220614075713.32767-4-jslaby@suse.cz>
Date:   Tue, 14 Jun 2022 09:57:10 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 4/7] tty/vt: consolemap: saner variable names in set_inverse_transl()

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@...e.cz>
---
 drivers/tty/vt/consolemap.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index a69dfda8e3d0..3d0e10dac6d9 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -214,29 +214,29 @@ struct uni_pagedict {
 
 static struct uni_pagedict *dflt;
 
-static void set_inverse_transl(struct vc_data *conp, struct uni_pagedict *p,
+static void set_inverse_transl(struct vc_data *conp, struct uni_pagedict *dict,
 	       enum translation_map m)
 {
-	int j, glyph;
 	unsigned short *t = translations[m];
-	unsigned char *q;
+	unsigned char *inv;
 
-	if (!p)
+	if (!dict)
 		return;
-	q = p->inverse_translations[m];
+	inv = dict->inverse_translations[m];
 
-	if (!q) {
-		q = p->inverse_translations[m] = kmalloc(MAX_GLYPH, GFP_KERNEL);
-		if (!q)
+	if (!inv) {
+		inv = dict->inverse_translations[m] = kmalloc(MAX_GLYPH,
+				GFP_KERNEL);
+		if (!inv)
 			return;
 	}
-	memset(q, 0, MAX_GLYPH);
+	memset(inv, 0, MAX_GLYPH);
 
-	for (j = 0; j < ARRAY_SIZE(translations[i]); j++) {
-		glyph = conv_uni_to_pc(conp, t[j]);
-		if (glyph >= 0 && glyph < MAX_GLYPH && q[glyph] < 32) {
+	for (unsigned int ch = 0; ch < ARRAY_SIZE(translations[m]); ch++) {
+		int glyph = conv_uni_to_pc(conp, t[ch]);
+		if (glyph >= 0 && glyph < MAX_GLYPH && inv[glyph] < 32) {
 			/* prefer '-' above SHY etc. */
-			q[glyph] = j;
+			inv[glyph] = ch;
 		}
 	}
 }
-- 
2.36.1