1 files changed, 0 insertions, 123 deletions
diff --git a/arch/arm/lib/crc32-glue.c b/arch/arm/lib/crc32-glue.c
deleted file mode 100644
index 4340351dbde8..000000000000
--- a/arch/arm/lib/crc32-glue.c
+++ /dev/null
@@ -1,123 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Accelerated CRC32(C) using ARM CRC, NEON and Crypto Extensions instructions
- *
- * Copyright (C) 2016 Linaro Ltd <ard.biesheuvel@linaro.org>
- */
-
-#include <linux/cpufeature.h>
-#include <linux/crc32.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/string.h>
-
-#include <crypto/internal/simd.h>
-
-#include <asm/hwcap.h>
-#include <asm/neon.h>
-#include <asm/simd.h>
-
-static DEFINE_STATIC_KEY_FALSE(have_crc32);
-static DEFINE_STATIC_KEY_FALSE(have_pmull);
-
-#define PMULL_MIN_LEN	64	/* min size of buffer for pmull functions */
-
-asmlinkage u32 crc32_pmull_le(const u8 buf[], u32 len, u32 init_crc);
-asmlinkage u32 crc32_armv8_le(u32 init_crc, const u8 buf[], u32 len);
-
-asmlinkage u32 crc32c_pmull_le(const u8 buf[], u32 len, u32 init_crc);
-asmlinkage u32 crc32c_armv8_le(u32 init_crc, const u8 buf[], u32 len);
-
-static u32 crc32_le_scalar(u32 crc, const u8 *p, size_t len)
-{
-	if (static_branch_likely(&have_crc32))
-		return crc32_armv8_le(crc, p, len);
-	return crc32_le_base(crc, p, len);
-}
-
-u32 crc32_le_arch(u32 crc, const u8 *p, size_t len)
-{
-	if (len >= PMULL_MIN_LEN + 15 &&
-	    static_branch_likely(&have_pmull) && crypto_simd_usable()) {
-		size_t n = -(uintptr_t)p & 15;
-
-		/* align p to 16-byte boundary */
-		if (n) {
-			crc = crc32_le_scalar(crc, p, n);
-			p += n;
-			len -= n;
-		}
-		n = round_down(len, 16);
-		kernel_neon_begin();
-		crc = crc32_pmull_le(p, n, crc);
-		kernel_neon_end();
-		p += n;
-		len -= n;
-	}
-	return crc32_le_scalar(crc, p, len);
-}
-EXPORT_SYMBOL(crc32_le_arch);
-
-static u32 crc32c_scalar(u32 crc, const u8 *p, size_t len)
-{
-	if (static_branch_likely(&have_crc32))
-		return crc32c_armv8_le(crc, p, len);
-	return crc32c_base(crc, p, len);
-}
-
-u32 crc32c_arch(u32 crc, const u8 *p, size_t len)
-{
-	if (len >= PMULL_MIN_LEN + 15 &&
-	    static_branch_likely(&have_pmull) && crypto_simd_usable()) {
-		size_t n = -(uintptr_t)p & 15;
-
-		/* align p to 16-byte boundary */
-		if (n) {
-			crc = crc32c_scalar(crc, p, n);
-			p += n;
-			len -= n;
-		}
-		n = round_down(len, 16);
-		kernel_neon_begin();
-		crc = crc32c_pmull_le(p, n, crc);
-		kernel_neon_end();
-		p += n;
-		len -= n;
-	}
-	return crc32c_scalar(crc, p, len);
-}
-EXPORT_SYMBOL(crc32c_arch);
-
-u32 crc32_be_arch(u32 crc, const u8 *p, size_t len)
-{
-	return crc32_be_base(crc, p, len);
-}
-EXPORT_SYMBOL(crc32_be_arch);
-
-static int __init crc32_arm_init(void)
-{
-	if (elf_hwcap2 & HWCAP2_CRC32)
-		static_branch_enable(&have_crc32);
-	if (elf_hwcap2 & HWCAP2_PMULL)
-		static_branch_enable(&have_pmull);
-	return 0;
-}
-arch_initcall(crc32_arm_init);
-
-static void __exit crc32_arm_exit(void)
-{
-}
-module_exit(crc32_arm_exit);
-
-u32 crc32_optimizations(void)
-{
-	if (elf_hwcap2 & (HWCAP2_CRC32 | HWCAP2_PMULL))
-		return CRC32_LE_OPTIMIZATION | CRC32C_OPTIMIZATION;
-	return 0;
-}
-EXPORT_SYMBOL(crc32_optimizations);
-
-MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
-MODULE_DESCRIPTION("Accelerated CRC32(C) using ARM CRC, NEON and Crypto Extensions");
-MODULE_LICENSE("GPL v2");