1 files changed, 0 insertions, 83 deletions
diff --git a/arch/powerpc/lib/crc-t10dif.c b/arch/powerpc/lib/crc-t10dif.c
deleted file mode 100644
index be23ded3a9df..000000000000
--- a/arch/powerpc/lib/crc-t10dif.c
+++ /dev/null
@@ -1,83 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Calculate a CRC T10-DIF with vpmsum acceleration
- *
- * Copyright 2017, Daniel Axtens, IBM Corporation.
- * [based on crc32c-vpmsum_glue.c]
- */
-
-#include <asm/switch_to.h>
-#include <crypto/internal/simd.h>
-#include <linux/cpufeature.h>
-#include <linux/crc-t10dif.h>
-#include <linux/jump_label.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/preempt.h>
-#include <linux/uaccess.h>
-
-#define VMX_ALIGN		16
-#define VMX_ALIGN_MASK		(VMX_ALIGN-1)
-
-#define VECTOR_BREAKPOINT	64
-
-static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_vec_crypto);
-
-u32 __crct10dif_vpmsum(u32 crc, unsigned char const *p, size_t len);
-
-u16 crc_t10dif_arch(u16 crci, const u8 *p, size_t len)
-{
-	unsigned int prealign;
-	unsigned int tail;
-	u32 crc = crci;
-
-	if (len < (VECTOR_BREAKPOINT + VMX_ALIGN) ||
-	    !static_branch_likely(&have_vec_crypto) || !crypto_simd_usable())
-		return crc_t10dif_generic(crc, p, len);
-
-	if ((unsigned long)p & VMX_ALIGN_MASK) {
-		prealign = VMX_ALIGN - ((unsigned long)p & VMX_ALIGN_MASK);
-		crc = crc_t10dif_generic(crc, p, prealign);
-		len -= prealign;
-		p += prealign;
-	}
-
-	if (len & ~VMX_ALIGN_MASK) {
-		crc <<= 16;
-		preempt_disable();
-		pagefault_disable();
-		enable_kernel_altivec();
-		crc = __crct10dif_vpmsum(crc, p, len & ~VMX_ALIGN_MASK);
-		disable_kernel_altivec();
-		pagefault_enable();
-		preempt_enable();
-		crc >>= 16;
-	}
-
-	tail = len & VMX_ALIGN_MASK;
-	if (tail) {
-		p += len & ~VMX_ALIGN_MASK;
-		crc = crc_t10dif_generic(crc, p, tail);
-	}
-
-	return crc & 0xffff;
-}
-EXPORT_SYMBOL(crc_t10dif_arch);
-
-static int __init crc_t10dif_powerpc_init(void)
-{
-	if (cpu_has_feature(CPU_FTR_ARCH_207S) &&
-	    (cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_VEC_CRYPTO))
-		static_branch_enable(&have_vec_crypto);
-	return 0;
-}
-subsys_initcall(crc_t10dif_powerpc_init);
-
-static void __exit crc_t10dif_powerpc_exit(void)
-{
-}
-module_exit(crc_t10dif_powerpc_exit);
-
-MODULE_AUTHOR("Daniel Axtens <dja@axtens.net>");
-MODULE_DESCRIPTION("CRCT10DIF using vector polynomial multiply-sum instructions");
-MODULE_LICENSE("GPL");