qeth: Add new s390 debug feature for each qeth card
This patch adds a debug area for each qeth card. This debug area will replace
various other debug areas that are global for all cards handled by the device
driver. On crash dump analysis this makes life easier when trying to find out
what's going on with an interface. Also, the forest of debug areas for this
device driver is significantly cleared up.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.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 57770cc..a06a9b7 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -4282,6 +4282,7 @@
struct device *dev;
int rc;
unsigned long flags;
+ char dbf_name[20];
QETH_DBF_TEXT(SETUP, 2, "probedev");
@@ -4297,6 +4298,17 @@
rc = -ENOMEM;
goto err_dev;
}
+
+ snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
+ dev_name(&gdev->dev));
+ card->debug = debug_register(dbf_name, 2, 1, 8);
+ if (!card->debug) {
+ QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
+ rc = -ENOMEM;
+ goto err_card;
+ }
+ debug_register_view(card->debug, &debug_hex_ascii_view);
+
card->read.ccwdev = gdev->cdev[0];
card->write.ccwdev = gdev->cdev[1];
card->data.ccwdev = gdev->cdev[2];
@@ -4309,12 +4321,12 @@
rc = qeth_determine_card_type(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
- goto err_card;
+ goto err_dbf;
}
rc = qeth_setup_card(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
- goto err_card;
+ goto err_dbf;
}
if (card->info.type == QETH_CARD_TYPE_OSN)
@@ -4322,7 +4334,7 @@
else
rc = qeth_core_create_device_attributes(dev);
if (rc)
- goto err_card;
+ goto err_dbf;
switch (card->info.type) {
case QETH_CARD_TYPE_OSN:
case QETH_CARD_TYPE_OSM:
@@ -4352,6 +4364,8 @@
qeth_core_remove_osn_attributes(dev);
else
qeth_core_remove_device_attributes(dev);
+err_dbf:
+ debug_unregister(card->debug);
err_card:
qeth_core_free_card(card);
err_dev:
@@ -4375,6 +4389,7 @@
} else {
qeth_core_remove_device_attributes(&gdev->dev);
}
+ debug_unregister(card->debug);
write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
list_del(&card->list);
write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);