Re: drivers/staging/qlge/qlge_main.c:4564 qlge_probe() warn: missing error code 'err'

From: Coiby Xu
Date: Tue Mar 09 2021 - 19:30:05 EST

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Hi Dan,

Thanks for finding this issue! I'll submit all the patches including the
one for the previous issue reported by you ("[bug report] staging: qlge: Initialize devlink health dump framework") after finishing all items listed in drivers/staging/qlge/TODO.

On Thu, Feb 25, 2021 at 01:03:03PM +0300, Dan Carpenter wrote:

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 29c395c77a9a514c5857c45ceae2665e9bd99ac7
commit: 953b94009377419f28fd0153f91fcd5b5a347608 staging: qlge: Initialize devlink health dump framework
config: i386-randconfig-m021-20210225 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

smatch warnings:
drivers/staging/qlge/qlge_main.c:4564 qlge_probe() warn: missing error code 'err'

vim +/err +4564 drivers/staging/qlge/qlge_main.c

5d8e87265715a1 drivers/net/ethernet/qlogic/qlge/qlge_main.c Bill Pemberton 2012-12-03 4544 static int qlge_probe(struct pci_dev *pdev,
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4545 const struct pci_device_id *pci_entry)
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4546 {
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4547 struct qlge_netdev_priv *ndev_priv;
f8c047be540197 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4548 struct qlge_adapter *qdev = NULL;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4549 struct net_device *ndev = NULL;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4550 struct devlink *devlink;
f41e1a0a9462fc drivers/staging/qlge/qlge_main.c Dorothea Ehrl 2019-11-27 4551 static int cards_found;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4552 int err = 0;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4553
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4554 devlink = devlink_alloc(&qlge_devlink_ops, sizeof(struct qlge_adapter));
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4555 if (!devlink)
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4556 return -ENOMEM;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4557
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4558 qdev = devlink_priv(devlink);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4559
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4560 ndev = alloc_etherdev_mq(sizeof(struct qlge_netdev_priv),
1b998958b301fb drivers/staging/qlge/qlge_main.c Scott Schafer 2019-12-11 4561 min(MAX_CPUS,
1b998958b301fb drivers/staging/qlge/qlge_main.c Scott Schafer 2019-12-11 4562 netif_get_num_default_rss_queues()));
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4563 if (!ndev)
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 @4564 goto devlink_free;

"err = -ENOMEM;"

c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4565
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4566 ndev_priv = netdev_priv(ndev);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4567 ndev_priv->qdev = qdev;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4568 ndev_priv->ndev = ndev;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4569 qdev->ndev = ndev;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4570 err = qlge_init_device(pdev, qdev, cards_found);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4571 if (err < 0)
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4572 goto netdev_free;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4573
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4574 SET_NETDEV_DEV(ndev, &pdev->dev);
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4575 ndev->hw_features = NETIF_F_SG |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4576 NETIF_F_IP_CSUM |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4577 NETIF_F_TSO |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4578 NETIF_F_TSO_ECN |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4579 NETIF_F_HW_VLAN_CTAG_TX |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4580 NETIF_F_HW_VLAN_CTAG_RX |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4581 NETIF_F_HW_VLAN_CTAG_FILTER |
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4582 NETIF_F_RXCSUM;
a45adbe8d35247 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2013-09-27 4583 ndev->features = ndev->hw_features;
1a0150a93c4969 drivers/net/ethernet/qlogic/qlge/qlge_main.c brenohl@xxxxxxxxxx 2012-07-27 4584 ndev->vlan_features = ndev->hw_features;
51bb352f15595f drivers/net/ethernet/qlogic/qlge/qlge_main.c Jitendra Kalsaria 2014-01-14 4585 /* vlan gets same features (except vlan filter) */
f6d1ac4b5f15f5 drivers/net/ethernet/qlogic/qlge/qlge_main.c Vlad Yasevich 2014-03-27 4586 ndev->vlan_features &= ~(NETIF_F_HW_VLAN_CTAG_FILTER |
f6d1ac4b5f15f5 drivers/net/ethernet/qlogic/qlge/qlge_main.c Vlad Yasevich 2014-03-27 4587 NETIF_F_HW_VLAN_CTAG_TX |
f6d1ac4b5f15f5 drivers/net/ethernet/qlogic/qlge/qlge_main.c Vlad Yasevich 2014-03-27 4588 NETIF_F_HW_VLAN_CTAG_RX);
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4589
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4590 if (test_bit(QL_DMA64, &qdev->flags))
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4591 ndev->features |= NETIF_F_HIGHDMA;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4592
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4593 /*
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4594 * Set up net_device structure.
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4595 */
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4596 ndev->tx_queue_len = qdev->tx_ring_size;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4597 ndev->irq = pdev->irq;
25ed784910e43e drivers/net/qlge/qlge_main.c Stephen Hemminger 2008-11-21 4598
25ed784910e43e drivers/net/qlge/qlge_main.c Stephen Hemminger 2008-11-21 4599 ndev->netdev_ops = &qlge_netdev_ops;
7ad24ea4bf620a drivers/net/ethernet/qlogic/qlge/qlge_main.c Wilfried Klaebe 2014-05-11 4600 ndev->ethtool_ops = &qlge_ethtool_ops;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4601 ndev->watchdog_timeo = 10 * HZ;
25ed784910e43e drivers/net/qlge/qlge_main.c Stephen Hemminger 2008-11-21 4602
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4603 /* MTU range: this driver only supports 1500 or 9000, so this only
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4604 * filters out values above or below, and we'll rely on
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4605 * qlge_change_mtu to make sure only 1500 or 9000 are allowed
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4606 */
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4607 ndev->min_mtu = ETH_DATA_LEN;
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4608 ndev->max_mtu = 9000;
d894be57ca92c8 drivers/net/ethernet/qlogic/qlge/qlge_main.c Jarod Wilson 2016-10-20 4609
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4610 err = register_netdev(ndev);
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4611 if (err) {
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4612 dev_err(&pdev->dev, "net device registration failed.\n");
f8c047be540197 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4613 qlge_release_all(pdev);
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4614 pci_disable_device(pdev);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4615 goto netdev_free;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4616 }
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4617
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4618 err = devlink_register(devlink, &pdev->dev);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4619 if (err)
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4620 goto netdev_free;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4621
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4622 qlge_health_create_reporters(qdev);
15c052fc7f4a1b drivers/net/qlge/qlge_main.c Ron Mercer 2010-02-04 4623 /* Start up the timer to trigger EEH if
15c052fc7f4a1b drivers/net/qlge/qlge_main.c Ron Mercer 2010-02-04 4624 * the bus goes dead
15c052fc7f4a1b drivers/net/qlge/qlge_main.c Ron Mercer 2010-02-04 4625 */
f8c047be540197 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4626 timer_setup(&qdev->timer, qlge_timer, TIMER_DEFERRABLE);
df7e828c1b6997 drivers/net/ethernet/qlogic/qlge/qlge_main.c Kees Cook 2017-10-04 4627 mod_timer(&qdev->timer, jiffies + (5 * HZ));
f8c047be540197 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4628 qlge_link_off(qdev);
f8c047be540197 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4629 qlge_display_dev_info(ndev);
9dfbbaa6b0b9f7 drivers/net/qlge/qlge_main.c Ron Mercer 2009-10-30 4630 atomic_set(&qdev->lb_count, 0);
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4631 cards_found++;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4632 return 0;
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4633
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4634 netdev_free:
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4635 free_netdev(ndev);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4636 devlink_free:
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4637 devlink_free(devlink);
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4638
953b9400937741 drivers/staging/qlge/qlge_main.c Coiby Xu 2021-01-23 4639 return err;
c4e84bde1d595d drivers/net/qlge/qlge_main.c Ron Mercer 2008-09-18 4640 }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

--
Best regards,
Coiby

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