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| author | Felix Beck <felix.beck@de.ibm.com> | 2011-01-05 12:47:47 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-01-05 12:47:27 +0100 |
| commit | c2567f8ffa2704f6f2f81013e9a590deca5a865f (patch) | |
| tree | 83c71b7139d21b51166f085f08bcefcaaa808b93 /drivers/s390/crypto/zcrypt_pcica.c | |
| parent | 2ade1fab026b4a103f0105ec4b47654fc2f729c7 (diff) | |
| download | linux-c2567f8ffa2704f6f2f81013e9a590deca5a865f.tar.gz linux-c2567f8ffa2704f6f2f81013e9a590deca5a865f.tar.bz2 linux-c2567f8ffa2704f6f2f81013e9a590deca5a865f.zip | |
[S390] zcrypt: cope with cca restriction of cex3
The cca on the crypto adapter has a restriction in the size of the
exponent if a key with a modulus bigger than 2048 bit is used. Thus
in that case we have to avoid that the crypto device driver thinks
the adapter is defect and sets it offline. Therfore a new member for
the zcrypt_device struct called max_exp_bit_length is introduced. This
will be set the first time the cca returns the error code function
not implemented. If this is done with an adapter twice it will return
-EINVAL.
Signed-off-by: Felix Beck <felix.beck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_pcica.c')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_pcica.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/crypto/zcrypt_pcica.c b/drivers/s390/crypto/zcrypt_pcica.c index 09e934b295a0..1afb69c75fea 100644 --- a/drivers/s390/crypto/zcrypt_pcica.c +++ b/drivers/s390/crypto/zcrypt_pcica.c @@ -373,6 +373,7 @@ static int zcrypt_pcica_probe(struct ap_device *ap_dev) zdev->min_mod_size = PCICA_MIN_MOD_SIZE; zdev->max_mod_size = PCICA_MAX_MOD_SIZE; zdev->speed_rating = PCICA_SPEED_RATING; + zdev->max_exp_bit_length = PCICA_MAX_MOD_SIZE; ap_dev->reply = &zdev->reply; ap_dev->private = zdev; rc = zcrypt_device_register(zdev); |