s390/qeth: fix initialization on old HW

I stumbled over an old OSA model that claims to support DIAG_ASSIST,
but then rejects the cmd to query its DIAG capabilities.

In the old code this was ok, as the returned raw error code was > 0.
Now that we translate the raw codes to errnos, the "rc < 0" causes us
to fail the initialization of the device.

The fix is trivial: don't bail out when the DIAG query fails. Such an
error is not critical, we can still use the device (with a slightly
reduced set of features).

Fixes: 742d4d40831d ("s390/qeth: convert remaining legacy cmd callbacks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index c64ef55..29facb9 100644 (file)
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -5026,10 +5026,8 @@ retriable:
        }
        if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
                rc = qeth_query_setdiagass(card);
-               if (rc < 0) {
+               if (rc)
                        QETH_CARD_TEXT_(card, 2, "8err%d", rc);
-                       goto out;
-               }
        }
 
        if (!qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP) ||