From dbed23dba0fb153c4566af59da7dfa06b780b0af Mon Sep 17 00:00:00 2001 From: Harald Freudenberger Date: Fri, 12 May 2017 18:53:41 +0200 Subject: s390/zcrypt: Add some debug messages on failure. Added some dbf debug messages on failure of the most important ioctl calls. These messages are only enabled with dbf level 6 (debug) and so do not affect the normal operating mode which uses level 3 (errors and higher). Signed-off-by: Harald Freudenberger Signed-off-by: Martin Schwidefsky --- drivers/s390/crypto/zcrypt_api.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'drivers/s390/crypto') diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 93015f85d4a6..b1c27e28859b 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -821,8 +821,10 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, do { rc = zcrypt_rsa_modexpo(&mex); } while (rc == -EAGAIN); - if (rc) + if (rc) { + ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSAMODEXPO rc=%d", rc); return rc; + } return put_user(mex.outputdatalength, &umex->outputdatalength); } case ICARSACRT: { @@ -838,8 +840,10 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, do { rc = zcrypt_rsa_crt(&crt); } while (rc == -EAGAIN); - if (rc) + if (rc) { + ZCRYPT_DBF(DBF_DEBUG, "ioctl ICARSACRT rc=%d", rc); return rc; + } return put_user(crt.outputdatalength, &ucrt->outputdatalength); } case ZSECSENDCPRB: { @@ -855,6 +859,8 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, do { rc = zcrypt_send_cprb(&xcRB); } while (rc == -EAGAIN); + if (rc) + ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDCPRB rc=%d", rc); if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB))) return -EFAULT; return rc; @@ -872,6 +878,8 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, do { rc = zcrypt_send_ep11_cprb(&xcrb); } while (rc == -EAGAIN); + if (rc) + ZCRYPT_DBF(DBF_DEBUG, "ioctl ZSENDEP11CPRB rc=%d", rc); if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb))) return -EFAULT; return rc; -- cgit v1.2.3-58-ga151