linux-kernel - [PATCH 3/4] exfat: Remove unused functions exfat_high_surrogate() and exfat_low

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Message-Id: <20200317222555.29974-4-pali@kernel.org>
Date:   Tue, 17 Mar 2020 23:25:54 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Namjae Jeon <namjae.jeon@...sung.com>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Alexander Viro <viro@...iv.linux.org.uk>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] exfat: Remove unused functions exfat_high_surrogate() and exfat_low_surrogate()

After applying previous two patches, these functions are not used anymore.

Signed-off-by: Pali Rohár <pali@...nel.org>
---
 fs/exfat/exfat_fs.h |  2 --
 fs/exfat/nls.c      | 13 -------------
 2 files changed, 15 deletions(-)

diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h
index 67d4e46fb810..8a176a803206 100644
--- a/fs/exfat/exfat_fs.h
+++ b/fs/exfat/exfat_fs.h
@@ -492,8 +492,6 @@ int exfat_nls_to_utf16(struct super_block *sb,
 		struct exfat_uni_name *uniname, int *p_lossy);
 int exfat_create_upcase_table(struct super_block *sb);
 void exfat_free_upcase_table(struct exfat_sb_info *sbi);
-unsigned short exfat_high_surrogate(unicode_t u);
-unsigned short exfat_low_surrogate(unicode_t u);
 
 /* exfat/misc.c */
 void __exfat_fs_error(struct super_block *sb, int report, const char *fmt, ...)
diff --git a/fs/exfat/nls.c b/fs/exfat/nls.c
index 6d1c3ae130ff..e3a9f5e08f68 100644
--- a/fs/exfat/nls.c
+++ b/fs/exfat/nls.c
@@ -537,22 +537,9 @@ static int exfat_utf8_to_utf16(struct super_block *sb,
 	return unilen;
 }
 
-#define PLANE_SIZE	0x00010000
 #define SURROGATE_MASK	0xfffff800
 #define SURROGATE_PAIR	0x0000d800
 #define SURROGATE_LOW	0x00000400
-#define SURROGATE_BITS	0x000003ff
-
-unsigned short exfat_high_surrogate(unicode_t u)
-{
-	return ((u - PLANE_SIZE) >> 10) + SURROGATE_PAIR;
-}
-
-unsigned short exfat_low_surrogate(unicode_t u)
-{
-	return ((u - PLANE_SIZE) & SURROGATE_BITS) | SURROGATE_PAIR |
-		SURROGATE_LOW;
-}
 
 static int __exfat_utf16_to_nls(struct super_block *sb,
 		struct exfat_uni_name *p_uniname, unsigned char *p_cstring,
-- 
2.20.1