diff options
| author | Sven Ebenfeld <[email protected]> | 2016-11-07 18:51:34 +0100 |
|---|---|---|
| committer | Herbert Xu <[email protected]> | 2016-11-13 17:39:28 +0800 |
| commit | 83d2c9a9c17b1e9f23a3a0c24c03cd18e4b02520 (patch) | |
| tree | eedaa996841103fbe4863d8b771ce08aafefb38d | |
| parent | 6d4952d9d9d4dc2bb9c0255d95a09405a1e958f7 (diff) | |
crypto: caam - do not register AES-XTS mode on LP units
When using AES-XTS on a Wandboard, we receive a Mode error:
caam_jr 2102000.jr1: 20001311: CCB: desc idx 19: AES: Mode error.
According to the Security Reference Manual, the Low Power AES units
of the i.MX6 do not support the XTS mode. Therefore we must not
register XTS implementations in the Crypto API.
Signed-off-by: Sven Ebenfeld <[email protected]>
Reviewed-by: Horia Geantă <[email protected]>
Cc: <[email protected]> # 4.4+
Fixes: c6415a6016bf "crypto: caam - add support for acipher xts(aes)"
Signed-off-by: Herbert Xu <[email protected]>
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 156aad167cd6..f5a63ba97023 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -4583,6 +4583,15 @@ static int __init caam_algapi_init(void) if (!aes_inst && (alg_sel == OP_ALG_ALGSEL_AES)) continue; + /* + * Check support for AES modes not available + * on LP devices. + */ + if ((cha_vid & CHA_ID_LS_AES_MASK) == CHA_ID_LS_AES_LP) + if ((alg->class1_alg_type & OP_ALG_AAI_MASK) == + OP_ALG_AAI_XTS) + continue; + t_alg = caam_alg_alloc(alg); if (IS_ERR(t_alg)) { err = PTR_ERR(t_alg); |