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| author | Antoine Tenart <antoine.tenart@bootlin.com> | 2018-05-14 15:11:01 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-05-26 18:11:40 +0200 |
| commit | bdfd19095685825ba7bbaa6740c9fc7fe4a2ca39 (patch) | |
| tree | 5ca91d53a01114f6249d06ea0fbb60e4d2bbe1c3 /drivers/crypto/inside-secure/safexcel.c | |
| parent | crypto: inside-secure - fix the hash then encrypt/decrypt types (diff) | |
| download | linux-bdfd19095685825ba7bbaa6740c9fc7fe4a2ca39.tar.xz linux-bdfd19095685825ba7bbaa6740c9fc7fe4a2ca39.zip | |
crypto: inside-secure - improve error reporting
This patch improves the error reporting from the Inside Secure driver to
the upper layers and crypto consumers. All errors reported by the engine
aren't fatal, and some may be genuine.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/inside-secure/safexcel.c')
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index d4a81be0d7d2..87e6d1a63886 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -537,6 +537,27 @@ finalize: EIP197_HIA_CDR(priv, ring) + EIP197_HIA_xDR_PREP_COUNT); } +inline int safexcel_rdesc_check_errors(struct safexcel_crypto_priv *priv, + struct safexcel_result_desc *rdesc) +{ + if (likely(!rdesc->result_data.error_code)) + return 0; + + if (rdesc->result_data.error_code & 0x407f) { + /* Fatal error (bits 0-7, 14) */ + dev_err(priv->dev, + "cipher: result: result descriptor error (%d)\n", + rdesc->result_data.error_code); + return -EIO; + } else if (rdesc->result_data.error_code == BIT(9)) { + /* Authentication failed */ + return -EBADMSG; + } + + /* All other non-fatal errors */ + return -EINVAL; +} + void safexcel_complete(struct safexcel_crypto_priv *priv, int ring) { struct safexcel_command_desc *cdesc; |