lib/crypto: sha256: Remove sha256_is_arch_optimized()

Remove sha256_is_arch_optimized(), since it is no longer used.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630160645.3198-12-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

7 files changed, 0 insertions, 44 deletions

diff --git a/lib/crypto/arm/sha256.c b/lib/crypto/arm/sha256.c
index 7d9082358695..27181be0aa92 100644
--- a/lib/crypto/arm/sha256.c
+++ b/lib/crypto/arm/sha256.c
@@ -37,13 +37,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	/* We always can use at least the ARM scalar implementation. */
-	return true;
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init sha256_arm_mod_init(void)
 {
 	if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && (elf_hwcap & HWCAP_NEON)) {
diff --git a/lib/crypto/arm64/sha256.c b/lib/crypto/arm64/sha256.c
index 609ffb815198..a5a498276708 100644
--- a/lib/crypto/arm64/sha256.c
+++ b/lib/crypto/arm64/sha256.c
@@ -47,13 +47,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	/* We always can use at least the ARM64 scalar implementation. */
-	return true;
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init sha256_arm64_mod_init(void)
 {
 	if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
diff --git a/lib/crypto/powerpc/sha256.c b/lib/crypto/powerpc/sha256.c
index 55f42403d572..14b8adcdcfc2 100644
--- a/lib/crypto/powerpc/sha256.c
+++ b/lib/crypto/powerpc/sha256.c
@@ -61,11 +61,5 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	return true;
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("SHA-256 Secure Hash Algorithm, SPE optimized");
diff --git a/lib/crypto/riscv/sha256.c b/lib/crypto/riscv/sha256.c
index a2079aa3ae92..01004cb9c6e9 100644
--- a/lib/crypto/riscv/sha256.c
+++ b/lib/crypto/riscv/sha256.c
@@ -34,12 +34,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	return static_key_enabled(&have_extensions);
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init riscv64_sha256_mod_init(void)
 {
 	/* Both zvknha and zvknhb provide the SHA-256 instructions. */
diff --git a/lib/crypto/s390/sha256.c b/lib/crypto/s390/sha256.c
index fb565718f753..6ebfd35a5d44 100644
--- a/lib/crypto/s390/sha256.c
+++ b/lib/crypto/s390/sha256.c
@@ -23,12 +23,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	return static_key_enabled(&have_cpacf_sha256);
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init sha256_s390_mod_init(void)
 {
 	if (cpu_have_feature(S390_CPU_FEATURE_MSA) &&
diff --git a/lib/crypto/sparc/sha256.c b/lib/crypto/sparc/sha256.c
index 060664b88a6d..f41c109c1c18 100644
--- a/lib/crypto/sparc/sha256.c
+++ b/lib/crypto/sparc/sha256.c
@@ -32,12 +32,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	return static_key_enabled(&have_sha256_opcodes);
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init sha256_sparc64_mod_init(void)
 {
 	unsigned long cfr;
diff --git a/lib/crypto/x86/sha256.c b/lib/crypto/x86/sha256.c
index cbb45defbefa..9ee38d2b3d57 100644
--- a/lib/crypto/x86/sha256.c
+++ b/lib/crypto/x86/sha256.c
@@ -37,12 +37,6 @@ void sha256_blocks_arch(struct sha256_block_state *state,
 }
 EXPORT_SYMBOL_GPL(sha256_blocks_arch);
 
-bool sha256_is_arch_optimized(void)
-{
-	return static_key_enabled(&have_sha256_x86);
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
 static int __init sha256_x86_mod_init(void)
 {
 	if (boot_cpu_has(X86_FEATURE_SHA_NI)) {