From: Eric Biggers Date: Tue, 4 Mar 2025 22:40:52 +0000 (-0800) Subject: lib/crc7: unexport crc7_be_syndrome_table X-Git-Tag: v6.15-rc1~184^2~6 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f3e5fe4adfb837cf68da2a25c5c8c1ef2d0c4d78;p=thirdparty%2Fkernel%2Flinux.git lib/crc7: unexport crc7_be_syndrome_table Since neither crc7_be_syndrome_table nor crc7_be_byte() are used outside lib/crc7.c, fold them into lib/crc7.c. Link: https://lore.kernel.org/r/20250304224052.157915-1-ebiggers@kernel.org Signed-off-by: Eric Biggers --- diff --git a/include/linux/crc7.h b/include/linux/crc7.h index b462842f3c32c..61d34749e437d 100644 --- a/include/linux/crc7.h +++ b/include/linux/crc7.h @@ -3,13 +3,6 @@ #define _LINUX_CRC7_H #include -extern const u8 crc7_be_syndrome_table[256]; - -static inline u8 crc7_be_byte(u8 crc, u8 data) -{ - return crc7_be_syndrome_table[crc ^ data]; -} - extern u8 crc7_be(u8 crc, const u8 *buffer, size_t len); #endif diff --git a/lib/crc7.c b/lib/crc7.c index 3848e313b7224..8dd991cc61146 100644 --- a/lib/crc7.c +++ b/lib/crc7.c @@ -7,14 +7,13 @@ #include #include - /* * Table for CRC-7 (polynomial x^7 + x^3 + 1). * This is a big-endian CRC (msbit is highest power of x), * aligned so the msbit of the byte is the x^6 coefficient * and the lsbit is not used. */ -const u8 crc7_be_syndrome_table[256] = { +static const u8 crc7_be_syndrome_table[256] = { 0x00, 0x12, 0x24, 0x36, 0x48, 0x5a, 0x6c, 0x7e, 0x90, 0x82, 0xb4, 0xa6, 0xd8, 0xca, 0xfc, 0xee, 0x32, 0x20, 0x16, 0x04, 0x7a, 0x68, 0x5e, 0x4c, @@ -48,7 +47,6 @@ const u8 crc7_be_syndrome_table[256] = { 0x1c, 0x0e, 0x38, 0x2a, 0x54, 0x46, 0x70, 0x62, 0x8c, 0x9e, 0xa8, 0xba, 0xc4, 0xd6, 0xe0, 0xf2 }; -EXPORT_SYMBOL(crc7_be_syndrome_table); /** * crc7_be - update the CRC7 for the data buffer @@ -65,7 +63,7 @@ EXPORT_SYMBOL(crc7_be_syndrome_table); u8 crc7_be(u8 crc, const u8 *buffer, size_t len) { while (len--) - crc = crc7_be_byte(crc, *buffer++); + crc = crc7_be_syndrome_table[crc ^ *buffer++]; return crc; } EXPORT_SYMBOL(crc7_be);