1 files changed, 0 insertions, 56 deletions
diff --git a/arch/s390/lib/crypto/chacha-glue.c b/arch/s390/lib/crypto/chacha-glue.c
deleted file mode 100644
index f95ba3483bbc..000000000000
--- a/arch/s390/lib/crypto/chacha-glue.c
+++ /dev/null
@@ -1,56 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * ChaCha stream cipher (s390 optimized)
- *
- * Copyright IBM Corp. 2021
- */
-
-#define KMSG_COMPONENT "chacha_s390"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <crypto/chacha.h>
-#include <linux/cpufeature.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sizes.h>
-#include <asm/fpu.h>
-#include "chacha-s390.h"
-
-void hchacha_block_arch(const struct chacha_state *state,
-			u32 out[HCHACHA_OUT_WORDS], int nrounds)
-{
-	/* TODO: implement hchacha_block_arch() in assembly */
-	hchacha_block_generic(state, out, nrounds);
-}
-EXPORT_SYMBOL(hchacha_block_arch);
-
-void chacha_crypt_arch(struct chacha_state *state, u8 *dst, const u8 *src,
-		       unsigned int bytes, int nrounds)
-{
-	/* s390 chacha20 implementation has 20 rounds hard-coded,
-	 * it cannot handle a block of data or less, but otherwise
-	 * it can handle data of arbitrary size
-	 */
-	if (bytes <= CHACHA_BLOCK_SIZE || nrounds != 20 || !cpu_has_vx()) {
-		chacha_crypt_generic(state, dst, src, bytes, nrounds);
-	} else {
-		DECLARE_KERNEL_FPU_ONSTACK32(vxstate);
-
-		kernel_fpu_begin(&vxstate, KERNEL_VXR);
-		chacha20_vx(dst, src, bytes, &state->x[4], &state->x[12]);
-		kernel_fpu_end(&vxstate, KERNEL_VXR);
-
-		state->x[12] += round_up(bytes, CHACHA_BLOCK_SIZE) /
-				CHACHA_BLOCK_SIZE;
-	}
-}
-EXPORT_SYMBOL(chacha_crypt_arch);
-
-bool chacha_is_arch_optimized(void)
-{
-	return cpu_has_vx();
-}
-EXPORT_SYMBOL(chacha_is_arch_optimized);
-
-MODULE_DESCRIPTION("ChaCha stream cipher (s390 optimized)");
-MODULE_LICENSE("GPL v2");