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Diffstat (limited to 'arch/sparc/crypto/crc32c_glue.c')
-rw-r--r--arch/sparc/crypto/crc32c_glue.c45
1 files changed, 24 insertions, 21 deletions
diff --git a/arch/sparc/crypto/crc32c_glue.c b/arch/sparc/crypto/crc32c_glue.c
index 82efb7f81c..688db0dcb9 100644
--- a/arch/sparc/crypto/crc32c_glue.c
+++ b/arch/sparc/crypto/crc32c_glue.c
@@ -20,6 +20,7 @@
#include <asm/pstate.h>
#include <asm/elf.h>
+#include <asm/unaligned.h>
#include "opcodes.h"
@@ -35,7 +36,7 @@ static int crc32c_sparc64_setkey(struct crypto_shash *hash, const u8 *key,
if (keylen != sizeof(u32))
return -EINVAL;
- *mctx = le32_to_cpup((__le32 *)key);
+ *mctx = get_unaligned_le32(key);
return 0;
}
@@ -51,18 +52,26 @@ static int crc32c_sparc64_init(struct shash_desc *desc)
extern void crc32c_sparc64(u32 *crcp, const u64 *data, unsigned int len);
-static void crc32c_compute(u32 *crcp, const u64 *data, unsigned int len)
+static u32 crc32c_compute(u32 crc, const u8 *data, unsigned int len)
{
- unsigned int asm_len;
-
- asm_len = len & ~7U;
- if (asm_len) {
- crc32c_sparc64(crcp, data, asm_len);
- data += asm_len / 8;
- len -= asm_len;
+ unsigned int n = -(uintptr_t)data & 7;
+
+ if (n) {
+ /* Data isn't 8-byte aligned. Align it. */
+ n = min(n, len);
+ crc = __crc32c_le(crc, data, n);
+ data += n;
+ len -= n;
+ }
+ n = len & ~7U;
+ if (n) {
+ crc32c_sparc64(&crc, (const u64 *)data, n);
+ data += n;
+ len -= n;
}
if (len)
- *crcp = __crc32c_le(*crcp, (const unsigned char *) data, len);
+ crc = __crc32c_le(crc, data, len);
+ return crc;
}
static int crc32c_sparc64_update(struct shash_desc *desc, const u8 *data,
@@ -70,19 +79,14 @@ static int crc32c_sparc64_update(struct shash_desc *desc, const u8 *data,
{
u32 *crcp = shash_desc_ctx(desc);
- crc32c_compute(crcp, (const u64 *) data, len);
-
+ *crcp = crc32c_compute(*crcp, data, len);
return 0;
}
-static int __crc32c_sparc64_finup(u32 *crcp, const u8 *data, unsigned int len,
- u8 *out)
+static int __crc32c_sparc64_finup(const u32 *crcp, const u8 *data,
+ unsigned int len, u8 *out)
{
- u32 tmp = *crcp;
-
- crc32c_compute(&tmp, (const u64 *) data, len);
-
- *(__le32 *) out = ~cpu_to_le32(tmp);
+ put_unaligned_le32(~crc32c_compute(*crcp, data, len), out);
return 0;
}
@@ -96,7 +100,7 @@ static int crc32c_sparc64_final(struct shash_desc *desc, u8 *out)
{
u32 *crcp = shash_desc_ctx(desc);
- *(__le32 *) out = ~cpu_to_le32p(crcp);
+ put_unaligned_le32(~*crcp, out);
return 0;
}
@@ -135,7 +139,6 @@ static struct shash_alg alg = {
.cra_flags = CRYPTO_ALG_OPTIONAL_KEY,
.cra_blocksize = CHKSUM_BLOCK_SIZE,
.cra_ctxsize = sizeof(u32),
- .cra_alignmask = 7,
.cra_module = THIS_MODULE,
.cra_init = crc32c_sparc64_cra_init,
}