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Date: Mon, 14 Aug 2017 12:20:07 +0200 (CEST)
From: Julia Lawall <julia.lawall@...6.fr>
To: Bryan.Whitehead@...rochip.com
cc: netdev@...r.kernel.org, davem@...emloft.net,
UNGLinuxDriver@...rochip.com, kbuild-all@...org
Subject: Re: [PATCH net-next 2/3] Add LAN743X to Kconfig and Makefile (fwd)
I don't think netdev_priv can return NULL, so lines 6641 to 6646 could
just be dropped.
julia
---------- Forwarded message ----------
Date: Mon, 14 Aug 2017 18:14:12 +0800
From: kbuild test robot <fengguang.wu@...el.com>
To: kbuild@...org
Cc: Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH net-next 2/3] Add LAN743X to Kconfig and Makefile
CC: kbuild-all@...org
In-Reply-To: <90A7E81AE28BAE4CBDDB3B35F187D264406F6049@...-SV-EXMX02.mchp-main.com>
TO: Bryan.Whitehead@...rochip.com
CC: netdev@...r.kernel.org, davem@...emloft.net
CC: UNGLinuxDriver@...rochip.com
Hi Bryan,
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Bryan-Whitehead-microchip-com/Add-LAN743X-driver/20170814-141247
:::::: branch date: 4 hours ago
:::::: commit date: 4 hours ago
>> drivers/net/ethernet/microchip/lan743x.c:6642:39-45: ERROR: adapter is NULL but dereferenced.
# https://github.com/0day-ci/linux/commit/dabee19fb26fee5184b2b304b12080be0f78a3f2
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout dabee19fb26fee5184b2b304b12080be0f78a3f2
vim +6642 drivers/net/ethernet/microchip/lan743x.c
a33f5600 Bryan Whitehead 2017-08-11 6609
a33f5600 Bryan Whitehead 2017-08-11 6610 /* lan743x_pcidev_probe - Device Initialization Routine
a33f5600 Bryan Whitehead 2017-08-11 6611 * @pdev: PCI device information struct
a33f5600 Bryan Whitehead 2017-08-11 6612 * @id: entry in lan743x_pci_tbl
a33f5600 Bryan Whitehead 2017-08-11 6613 *
a33f5600 Bryan Whitehead 2017-08-11 6614 * Returns 0 on success, negative on failure
a33f5600 Bryan Whitehead 2017-08-11 6615 *
a33f5600 Bryan Whitehead 2017-08-11 6616 * initializes an adapter identified by a pci_dev structure.
a33f5600 Bryan Whitehead 2017-08-11 6617 * The OS initialization, configuring of the adapter private structure,
a33f5600 Bryan Whitehead 2017-08-11 6618 * and a hardware reset occur.
a33f5600 Bryan Whitehead 2017-08-11 6619 **/
a33f5600 Bryan Whitehead 2017-08-11 6620 static int lan743x_pcidev_probe(struct pci_dev *pdev,
a33f5600 Bryan Whitehead 2017-08-11 6621 const struct pci_device_id *id)
a33f5600 Bryan Whitehead 2017-08-11 6622 {
a33f5600 Bryan Whitehead 2017-08-11 6623 struct net_device *netdev = NULL;
a33f5600 Bryan Whitehead 2017-08-11 6624 struct lan743x_adapter *adapter = NULL;
a33f5600 Bryan Whitehead 2017-08-11 6625 int ret = -ENODEV;
a33f5600 Bryan Whitehead 2017-08-11 6626
a33f5600 Bryan Whitehead 2017-08-11 6627 NETIF_ASSERT(adapter, probe, adapter->netdev, pdev);
a33f5600 Bryan Whitehead 2017-08-11 6628
a33f5600 Bryan Whitehead 2017-08-11 6629 netdev = alloc_etherdev(sizeof(struct lan743x_adapter));
a33f5600 Bryan Whitehead 2017-08-11 6630 if (!netdev) {
a33f5600 Bryan Whitehead 2017-08-11 6631 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6632 "alloc_etherdev returned NULL");
a33f5600 Bryan Whitehead 2017-08-11 6633 ret = -ENOMEM;
a33f5600 Bryan Whitehead 2017-08-11 6634 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6635 }
a33f5600 Bryan Whitehead 2017-08-11 6636
a33f5600 Bryan Whitehead 2017-08-11 6637 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
a33f5600 Bryan Whitehead 2017-08-11 6638 SET_NETDEV_DEV(netdev, &pdev->dev);
a33f5600 Bryan Whitehead 2017-08-11 6639 pci_set_drvdata(pdev, netdev);
a33f5600 Bryan Whitehead 2017-08-11 6640 adapter = netdev_priv(netdev);
a33f5600 Bryan Whitehead 2017-08-11 6641 if (!adapter) {
a33f5600 Bryan Whitehead 2017-08-11 @6642 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6643 "netdev_priv returned NULL");
a33f5600 Bryan Whitehead 2017-08-11 6644 ret = -ENOMEM;
a33f5600 Bryan Whitehead 2017-08-11 6645 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6646 }
a33f5600 Bryan Whitehead 2017-08-11 6647 memset(adapter, 0, sizeof(struct lan743x_adapter));
a33f5600 Bryan Whitehead 2017-08-11 6648 adapter->netdev = netdev;
a33f5600 Bryan Whitehead 2017-08-11 6649 adapter->init_flags = 0;
a33f5600 Bryan Whitehead 2017-08-11 6650 adapter->open_flags = 0;
a33f5600 Bryan Whitehead 2017-08-11 6651 adapter->msg_enable = msg_enable;
a33f5600 Bryan Whitehead 2017-08-11 6652 netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
a33f5600 Bryan Whitehead 2017-08-11 6653
a33f5600 Bryan Whitehead 2017-08-11 6654 ret = lan743x_pci_init(adapter, pdev);
a33f5600 Bryan Whitehead 2017-08-11 6655 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6656 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6657 "lan743x_pci_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6658 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6659 }
a33f5600 Bryan Whitehead 2017-08-11 6660 adapter->init_flags |= LAN743X_COMPONENT_FLAG_PCI;
a33f5600 Bryan Whitehead 2017-08-11 6661
a33f5600 Bryan Whitehead 2017-08-11 6662 ret = lan743x_csr_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6663 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6664 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6665 "lan743x_csr_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6666 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6667 }
a33f5600 Bryan Whitehead 2017-08-11 6668 adapter->init_flags |= LAN743X_COMPONENT_FLAG_CSR;
a33f5600 Bryan Whitehead 2017-08-11 6669
a33f5600 Bryan Whitehead 2017-08-11 6670 ret = lan743x_intr_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6671 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6672 NETIF_ERROR(adapter, drv, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6673 "lan743x_intr_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6674 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6675 }
a33f5600 Bryan Whitehead 2017-08-11 6676 adapter->init_flags |= LAN743X_COMPONENT_FLAG_INTR;
a33f5600 Bryan Whitehead 2017-08-11 6677
a33f5600 Bryan Whitehead 2017-08-11 6678 ret = lan743x_dp_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6679 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6680 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6681 "lan743x_dp_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6682 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6683 }
a33f5600 Bryan Whitehead 2017-08-11 6684 adapter->init_flags |= LAN743X_COMPONENT_FLAG_DP;
a33f5600 Bryan Whitehead 2017-08-11 6685
a33f5600 Bryan Whitehead 2017-08-11 6686 ret = lan743x_gpio_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6687 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6688 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6689 "lan743x_gpio_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6690 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6691 }
a33f5600 Bryan Whitehead 2017-08-11 6692 adapter->init_flags |= LAN743X_COMPONENT_FLAG_GPIO;
a33f5600 Bryan Whitehead 2017-08-11 6693
a33f5600 Bryan Whitehead 2017-08-11 6694 ret = lan743x_mac_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6695 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6696 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6697 "lan743x_mac_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6698 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6699 }
a33f5600 Bryan Whitehead 2017-08-11 6700 adapter->init_flags |= LAN743X_COMPONENT_FLAG_MAC;
a33f5600 Bryan Whitehead 2017-08-11 6701
a33f5600 Bryan Whitehead 2017-08-11 6702 ret = lan743x_phy_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6703 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6704 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6705 "lan743x_phy_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6706 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6707 }
a33f5600 Bryan Whitehead 2017-08-11 6708 adapter->init_flags |= LAN743X_COMPONENT_FLAG_PHY;
a33f5600 Bryan Whitehead 2017-08-11 6709
a33f5600 Bryan Whitehead 2017-08-11 6710 ret = lan743x_ptp_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6711 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6712 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6713 "lan743x_ptp_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6714 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6715 }
a33f5600 Bryan Whitehead 2017-08-11 6716 adapter->init_flags |= LAN743X_COMPONENT_FLAG_PTP;
a33f5600 Bryan Whitehead 2017-08-11 6717
a33f5600 Bryan Whitehead 2017-08-11 6718 ret = lan743x_rfe_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6719 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6720 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6721 "lan743x_rfe_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6722 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6723 }
a33f5600 Bryan Whitehead 2017-08-11 6724 adapter->init_flags |= LAN743X_COMPONENT_FLAG_RFE;
a33f5600 Bryan Whitehead 2017-08-11 6725
a33f5600 Bryan Whitehead 2017-08-11 6726 ret = lan743x_fct_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6727 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6728 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6729 "lan743x_fct_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6730 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6731 }
a33f5600 Bryan Whitehead 2017-08-11 6732 adapter->init_flags |= LAN743X_COMPONENT_FLAG_FCT;
a33f5600 Bryan Whitehead 2017-08-11 6733
a33f5600 Bryan Whitehead 2017-08-11 6734 ret = lan743x_dmac_init(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6735 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6736 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6737 "lan743x_dmac_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6738 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6739 }
a33f5600 Bryan Whitehead 2017-08-11 6740 adapter->init_flags |= LAN743X_COMPONENT_FLAG_DMAC;
a33f5600 Bryan Whitehead 2017-08-11 6741
a33f5600 Bryan Whitehead 2017-08-11 6742 ret = lan743x_rx_init(&adapter->rx[0], adapter, 0);
a33f5600 Bryan Whitehead 2017-08-11 6743 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6744 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6745 "lan743x_rx_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6746 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6747 }
a33f5600 Bryan Whitehead 2017-08-11 6748 adapter->init_flags |= LAN743X_COMPONENT_FLAG_RX(0);
a33f5600 Bryan Whitehead 2017-08-11 6749
a33f5600 Bryan Whitehead 2017-08-11 6750 ret = lan743x_tx_init(&adapter->tx[0], adapter, 0);
a33f5600 Bryan Whitehead 2017-08-11 6751 if (ret) {
a33f5600 Bryan Whitehead 2017-08-11 6752 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6753 "lan743x_tx_init failed, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6754 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6755 }
a33f5600 Bryan Whitehead 2017-08-11 6756 adapter->init_flags |= LAN743X_COMPONENT_FLAG_TX(0);
a33f5600 Bryan Whitehead 2017-08-11 6757
a33f5600 Bryan Whitehead 2017-08-11 6758 netdev->netdev_ops = &lan743x_netdev_ops;
a33f5600 Bryan Whitehead 2017-08-11 6759 netdev->ethtool_ops = &lan743x_ethtool_ops;
a33f5600 Bryan Whitehead 2017-08-11 6760 netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
a33f5600 Bryan Whitehead 2017-08-11 6761 netdev->hw_features = netdev->features;
a33f5600 Bryan Whitehead 2017-08-11 6762
a33f5600 Bryan Whitehead 2017-08-11 6763 strncpy(netdev->name, "eth%d", sizeof(netdev->name));
a33f5600 Bryan Whitehead 2017-08-11 6764 ret = register_netdev(netdev);
a33f5600 Bryan Whitehead 2017-08-11 6765 if (ret < 0) {
a33f5600 Bryan Whitehead 2017-08-11 6766 NETIF_ERROR(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6767 "failed to register net device, ret = %d", ret);
a33f5600 Bryan Whitehead 2017-08-11 6768 goto clean_up;
a33f5600 Bryan Whitehead 2017-08-11 6769 }
a33f5600 Bryan Whitehead 2017-08-11 6770 adapter->init_flags |= LAN743X_INIT_FLAG_NETDEV_REGISTERED;
a33f5600 Bryan Whitehead 2017-08-11 6771
a33f5600 Bryan Whitehead 2017-08-11 6772 NETIF_INFO(adapter, probe, adapter->netdev, "Probe succeeded");
a33f5600 Bryan Whitehead 2017-08-11 6773 ret = 0;
a33f5600 Bryan Whitehead 2017-08-11 6774
a33f5600 Bryan Whitehead 2017-08-11 6775 clean_up:
a33f5600 Bryan Whitehead 2017-08-11 6776 if (ret && adapter) {
a33f5600 Bryan Whitehead 2017-08-11 6777 NETIF_WARNING(adapter, probe, adapter->netdev,
a33f5600 Bryan Whitehead 2017-08-11 6778 "Incomplete initialization, performing clean up");
a33f5600 Bryan Whitehead 2017-08-11 6779 lan743x_device_cleanup(adapter);
a33f5600 Bryan Whitehead 2017-08-11 6780 }
a33f5600 Bryan Whitehead 2017-08-11 6781 return ret;
a33f5600 Bryan Whitehead 2017-08-11 6782 }
a33f5600 Bryan Whitehead 2017-08-11 6783
:::::: The code at line 6642 was first introduced by commit
:::::: a33f5600a21257dc396a7278c7c5ff74ac2f7844 Add LAN743X driver
:::::: TO: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
:::::: CC: 0day robot <fengguang.wu@...el.com>
---
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