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path: root/drivers/crypto/nx/nx-aes-ctr.c
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Diffstat (limited to 'drivers/crypto/nx/nx-aes-ctr.c')
-rw-r--r--drivers/crypto/nx/nx-aes-ctr.c13
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/crypto/nx/nx-aes-ctr.c b/drivers/crypto/nx/nx-aes-ctr.c
index a37d009dc75c..2617cd4d54dd 100644
--- a/drivers/crypto/nx/nx-aes-ctr.c
+++ b/drivers/crypto/nx/nx-aes-ctr.c
@@ -90,22 +90,14 @@ static int ctr_aes_nx_crypt(struct blkcipher_desc *desc,
90 struct nx_csbcpb *csbcpb = nx_ctx->csbcpb; 90 struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
91 unsigned long irq_flags; 91 unsigned long irq_flags;
92 unsigned int processed = 0, to_process; 92 unsigned int processed = 0, to_process;
93 u32 max_sg_len;
94 int rc; 93 int rc;
95 94
96 spin_lock_irqsave(&nx_ctx->lock, irq_flags); 95 spin_lock_irqsave(&nx_ctx->lock, irq_flags);
97 96
98 max_sg_len = min_t(u32, nx_driver.of.max_sg_len/sizeof(struct nx_sg),
99 nx_ctx->ap->sglen);
100
101 do { 97 do {
102 to_process = min_t(u64, nbytes - processed, 98 to_process = nbytes - processed;
103 nx_ctx->ap->databytelen);
104 to_process = min_t(u64, to_process,
105 NX_PAGE_SIZE * (max_sg_len - 1));
106 to_process = to_process & ~(AES_BLOCK_SIZE - 1);
107 99
108 rc = nx_build_sg_lists(nx_ctx, desc, dst, src, to_process, 100 rc = nx_build_sg_lists(nx_ctx, desc, dst, src, &to_process,
109 processed, csbcpb->cpb.aes_ctr.iv); 101 processed, csbcpb->cpb.aes_ctr.iv);
110 if (rc) 102 if (rc)
111 goto out; 103 goto out;
@@ -143,6 +135,7 @@ static int ctr3686_aes_nx_crypt(struct blkcipher_desc *desc,
143 135
144 memcpy(iv + CTR_RFC3686_NONCE_SIZE, 136 memcpy(iv + CTR_RFC3686_NONCE_SIZE,
145 desc->info, CTR_RFC3686_IV_SIZE); 137 desc->info, CTR_RFC3686_IV_SIZE);
138 iv[12] = iv[13] = iv[14] = 0;
146 iv[15] = 1; 139 iv[15] = 1;
147 140
148 desc->info = nx_ctx->priv.ctr.iv; 141 desc->info = nx_ctx->priv.ctr.iv;