linux-kernel - [PATCH 04/36] tty/vt: consolemap: decrypt inverse

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Message-Id: <20220607104946.18710-4-jslaby@suse.cz>
Date:   Tue,  7 Jun 2022 12:49:14 +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 04/36] tty/vt: consolemap: decrypt inverse_translate()

Fix invalid indentation and demystify the code by removing superfluous
"else"s. The "else"s are unneeded as they always follow an "if"-true
branch containing a "return". The code is now way more readable.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/vt/consolemap.c | 31 ++++++++++++++++---------------
 1 file changed, 16 insertions(+), 15 deletions(-)

diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c
index 15aa10ff87ad..fb61158f4dc6 100644
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -285,25 +285,26 @@ u16 inverse_translate(const struct vc_data *conp, int glyph, int use_unicode)
 {
 	struct uni_pagedict *p;
 	int m;
+
 	if (glyph < 0 || glyph >= MAX_GLYPH)
 		return 0;
-	else {
-		p = *conp->vc_uni_pagedir_loc;
-		if (!p)
+
+	p = *conp->vc_uni_pagedir_loc;
+	if (!p)
+		return glyph;
+
+	if (use_unicode) {
+		if (!p->inverse_trans_unicode)
 			return glyph;
-		else if (use_unicode) {
-			if (!p->inverse_trans_unicode)
-				return glyph;
-			else
-				return p->inverse_trans_unicode[glyph];
-			} else {
-			m = inv_translate[conp->vc_num];
-			if (!p->inverse_translations[m])
-				return glyph;
-			else
-				return p->inverse_translations[m][glyph];
-			}
+
+		return p->inverse_trans_unicode[glyph];
 	}
+
+	m = inv_translate[conp->vc_num];
+	if (!p->inverse_translations[m])
+		return glyph;
+
+	return p->inverse_translations[m][glyph];
 }
 EXPORT_SYMBOL_GPL(inverse_translate);
 
-- 
2.36.1