diff options
Diffstat (limited to 'arch/x86/crypto/crct10dif-pclmul_glue.c')
| -rw-r--r-- | arch/x86/crypto/crct10dif-pclmul_glue.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86/crypto/crct10dif-pclmul_glue.c b/arch/x86/crypto/crct10dif-pclmul_glue.c index cd4df9322501..0e785c0b2354 100644 --- a/arch/x86/crypto/crct10dif-pclmul_glue.c +++ b/arch/x86/crypto/crct10dif-pclmul_glue.c @@ -33,18 +33,12 @@ #include <asm/cpufeatures.h> #include <asm/cpu_device_id.h> -asmlinkage __u16 crc_t10dif_pcl(__u16 crc, const unsigned char *buf, - size_t len); +asmlinkage u16 crc_t10dif_pcl(u16 init_crc, const u8 *buf, size_t len); struct chksum_desc_ctx { __u16 crc; }; -/* - * Steps through buffer one byte at at time, calculates reflected - * crc using table. - */ - static int chksum_init(struct shash_desc *desc) { struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); @@ -59,7 +53,7 @@ static int chksum_update(struct shash_desc *desc, const u8 *data, { struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - if (irq_fpu_usable()) { + if (length >= 16 && irq_fpu_usable()) { kernel_fpu_begin(); ctx->crc = crc_t10dif_pcl(ctx->crc, data, length); kernel_fpu_end(); @@ -79,7 +73,7 @@ static int chksum_final(struct shash_desc *desc, u8 *out) static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len, u8 *out) { - if (irq_fpu_usable()) { + if (len >= 16 && irq_fpu_usable()) { kernel_fpu_begin(); *(__u16 *)out = crc_t10dif_pcl(*crcp, data, len); kernel_fpu_end(); |