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path: root/drivers/crypto/caam/key_gen.c
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Diffstat (limited to 'drivers/crypto/caam/key_gen.c')
-rw-r--r--drivers/crypto/caam/key_gen.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c
index 48dd3536060d..5a851ddc48fb 100644
--- a/drivers/crypto/caam/key_gen.c
+++ b/drivers/crypto/caam/key_gen.c
@@ -15,13 +15,14 @@ void split_key_done(struct device *dev, u32 *desc, u32 err,
void *context)
{
struct split_key_result *res = context;
+ int ecode = 0;
dev_dbg(dev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
if (err)
- caam_jr_strstatus(dev, err);
+ ecode = caam_jr_strstatus(dev, err);
- res->err = err;
+ res->err = ecode;
complete(&res->completion);
}
@@ -47,18 +48,20 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
u32 *desc;
struct split_key_result result;
dma_addr_t dma_addr;
+ unsigned int local_max;
int ret = -ENOMEM;
adata->keylen = split_key_len(adata->algtype & OP_ALG_ALGSEL_MASK);
adata->keylen_pad = split_key_pad_len(adata->algtype &
OP_ALG_ALGSEL_MASK);
+ local_max = max(keylen, adata->keylen_pad);
dev_dbg(jrdev, "split keylen %d split keylen padded %d\n",
adata->keylen, adata->keylen_pad);
print_hex_dump_debug("ctx.key@" __stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, key_in, keylen, 1);
- if (adata->keylen_pad > max_keylen)
+ if (local_max > max_keylen)
return -EINVAL;
desc = kmalloc(CAAM_CMD_SZ * 6 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA);
@@ -69,8 +72,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
memcpy(key_out, key_in, keylen);
- dma_addr = dma_map_single(jrdev, key_out, adata->keylen_pad,
- DMA_BIDIRECTIONAL);
+ dma_addr = dma_map_single(jrdev, key_out, local_max, DMA_BIDIRECTIONAL);
if (dma_mapping_error(jrdev, dma_addr)) {
dev_err(jrdev, "unable to map key memory\n");
goto out_free;
@@ -116,7 +118,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
adata->keylen_pad, 1);
}
- dma_unmap_single(jrdev, dma_addr, adata->keylen_pad, DMA_BIDIRECTIONAL);
+ dma_unmap_single(jrdev, dma_addr, local_max, DMA_BIDIRECTIONAL);
out_free:
kfree(desc);
return ret;