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authorHarald Freudenberger <freude@linux.vnet.ibm.com>2017-05-12 18:53:41 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2017-06-12 16:25:59 +0200
commitdbed23dba0fb153c4566af59da7dfa06b780b0af (patch)
tree45e954fd24b20630e82008f4f1aba0a14aa9e7da /drivers/s390
parentbf10b6687c19484cdf28107ec9b4be51c06c7746 (diff)
downloadlinux-dbed23dba0fb153c4566af59da7dfa06b780b0af.tar.bz2
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 <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/crypto/zcrypt_api.c12
1 files changed, 10 insertions, 2 deletions
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;