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s390/qeth: on gdev release, reset drvdata 

qeth_core_probe_device() sets the gdev's drvdata, but doesn't reset it
on a subsequent error. Move the (re-)setting around a bit, so that it
happens symmetrically on allocating/freeing the qeth_card struct.

This is no actual problem, as the ccwgroup core will discard the gdev
on a probe error. But from qeth's perspective the gdev is an external
resource, so it's best to manage it cleanly.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2018-09-26 18:29:05 +02:00 committed by David S. Miller
parent c1a935f6ec
commit a2eb0ad50c
1 changed files with 3 additions and 2 deletions
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5
drivers/s390/net/qeth_core_main.c
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@ -1513,6 +1513,7 @@ static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
card->gdev = gdev;
dev_set_drvdata(&gdev->dev, card);
CARD_RDEV(card) = gdev->cdev[0];
CARD_WDEV(card) = gdev->cdev[1];
CARD_DDEV(card) = gdev->cdev[2];
@ -1531,6 +1532,7 @@ static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
out_channel:
qeth_clean_channel(&card->read);
out_ip:
dev_set_drvdata(&gdev->dev, NULL);
kfree(card);
out:
return NULL;
@ -5074,6 +5076,7 @@ static void qeth_core_free_card(struct qeth_card *card)
qeth_clean_channel(&card->data);
qeth_free_qdio_buffers(card);
unregister_service_level(&card->qeth_service_level);
dev_set_drvdata(&card->gdev->dev, NULL);
kfree(card);
}
@ -5788,7 +5791,6 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
goto err_card;
}
dev_set_drvdata(&gdev->dev, card);
qeth_setup_card(card);
qeth_update_from_chp_desc(card);
@ -5851,7 +5853,6 @@ static void qeth_core_remove_device(struct ccwgroup_device *gdev)
write_unlock_irq(&qeth_core_card_list.rwlock);
free_netdev(card->dev);
qeth_core_free_card(card);
dev_set_drvdata(&gdev->dev, NULL);
put_device(&gdev->dev);
}