Re: [dborkman-bpf:pr/bpf-tstamp 3/3] drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c:2482:44: warning: shift count >= width of type

From: Christophe JAILLET
Date: Sat Nov 06 2021 - 17:12:30 EST

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In reply to: Nathan Chancellor: "Re: [dborkman-bpf:pr/bpf-tstamp 3/3] drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c:2482:44: warning: shift count >= width of type"
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Le 06/11/2021 à 19:42, Andy Shevchenko a écrit :

+Cc Christophe (can you look into this? It seems your code is involved)

On Sat, Nov 6, 2021 at 3:52 AM kernel test robot<lkp@xxxxxxxxx> wrote:

tree:https://git.kernel.org/pub/scm/linux/kernel/git/dborkman/bpf.git pr/bpf-tstamp
head: f7d619a946e981177777983af26e9e31163ffb38
commit: f7d619a946e981177777983af26e9e31163ffb38 [3/3] net: skb clock bases
config: i386-randconfig-a005-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
wgethttps://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
#https://git.kernel.org/pub/scm/linux/kernel/git/dborkman/bpf.git/commit/?id=f7d619a946e981177777983af26e9e31163ffb38
git remote add dborkman-bpfhttps://git.kernel.org/pub/scm/linux/kernel/git/dborkman/bpf.git
git fetch --no-tags dborkman-bpf pr/bpf-tstamp
git checkout f7d619a946e981177777983af26e9e31163ffb38
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386

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

All warnings (new ones prefixed by >>):

In file included from drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c:9:
In file included from drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h:22:
include/net/tcp.h:812:27: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
return tcp_ns_to_ts(skb->skb_mstamp_ns);
~~~ ^
include/net/tcp.h:818:22: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
return div_u64(skb->skb_mstamp_ns, NSEC_PER_USEC);
~~~ ^
include/net/tcp.h:2367:8: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
skb->skb_mstamp_ns += (u64)tp->tcp_tx_delay * NSEC_PER_USEC;
~~~ ^

drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c:2482:44: warning: shift count >= width of type [-Wshift-count-overflow]

if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^ ~~~

Hi,

DMA_BIT_MASK(64) means n=64, so we get ~0ULL and the other side of the : operator is not taken.
So, IMOH, this warning is a false positive that should be triggered in many places.

Unless I miss something obvious, I don't know why it is reported here.

'DMA_BIT_MASK(64)' is used quite often and should trigger the same warning every time.
grep -r --include=*.[ch] "DMA_BIT_MASK(64)" * | wc -l
235

Maybe a "Trojan Source <https://www.trojansource.codes/>" is lurking here :) ?

CJ

1 warning and 3 errors generated.
--
In file included from drivers/net/ethernet/emulex/benet/be_main.c:16:
In file included from drivers/net/ethernet/emulex/benet/be.h:20:
include/net/tcp.h:812:27: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
return tcp_ns_to_ts(skb->skb_mstamp_ns);
~~~ ^
include/net/tcp.h:818:22: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
return div_u64(skb->skb_mstamp_ns, NSEC_PER_USEC);
~~~ ^
include/net/tcp.h:2367:8: error: no member named 'skb_mstamp_ns' in 'struct sk_buff'
skb->skb_mstamp_ns += (u64)tp->tcp_tx_delay * NSEC_PER_USEC;
~~~ ^

drivers/net/ethernet/emulex/benet/be_main.c:5843:49: warning: shift count >= width of type [-Wshift-count-overflow]

status = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^ ~~~

Same here.

1 warning and 3 errors generated.

vim +2482 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c

77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2470
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2471 static int pch_gbe_probe(struct pci_dev *pdev,
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2472 const struct pci_device_id *pci_id)
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2473 {
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2474 struct net_device *netdev;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2475 struct pch_gbe_adapter *adapter;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2476 int ret;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2477
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2478 ret = pcim_enable_device(pdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2479 if (ret)
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2480 return ret;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2481
8ff39301efd9d21 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Christophe JAILLET 2020-11-21 @2482 if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
8ff39301efd9d21 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Christophe JAILLET 2020-11-21 2483 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2484 if (ret) {
8ff39301efd9d21 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Christophe JAILLET 2020-11-21 2485 dev_err(&pdev->dev, "ERR: No usable DMA configuration, aborting\n");
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2486 return ret;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2487 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2488 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2489
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2490 ret = pcim_iomap_regions(pdev, 1 << PCH_GBE_PCI_BAR, pci_name(pdev));
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2491 if (ret) {
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2492 dev_err(&pdev->dev,
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2493 "ERR: Can't reserve PCI I/O and memory resources\n");
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2494 return ret;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2495 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2496 pci_set_master(pdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2497
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2498 netdev = alloc_etherdev((int)sizeof(struct pch_gbe_adapter));
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2499 if (!netdev)
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2500 return -ENOMEM;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2501 SET_NETDEV_DEV(netdev, &pdev->dev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2502
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2503 pci_set_drvdata(pdev, netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2504 adapter = netdev_priv(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2505 adapter->netdev = netdev;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2506 adapter->pdev = pdev;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2507 adapter->hw.back = adapter;
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2508 adapter->hw.reg = pcim_iomap_table(pdev)[PCH_GBE_PCI_BAR];
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2509
f1a26fdf5944ff9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2013-05-18 2510 adapter->pdata = (struct pch_gbe_privdata *)pci_id->driver_data;
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2511 if (adapter->pdata && adapter->pdata->platform_init) {
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2512 ret = adapter->pdata->platform_init(pdev);
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2513 if (ret)
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2514 goto err_free_netdev;
9e3617a7b84512b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2021-05-10 2515 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2516
2e1c8725bb834f1 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Sinan Kaya 2017-12-19 2517 adapter->ptp_pdev =
2e1c8725bb834f1 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Sinan Kaya 2017-12-19 2518 pci_get_domain_bus_and_slot(pci_domain_nr(adapter->pdev->bus),
2e1c8725bb834f1 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Sinan Kaya 2017-12-19 2519 adapter->pdev->bus->number,
1a0bdadb4e36aba drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Takahiroi Shimizu 2012-03-07 2520 PCI_DEVFN(12, 4));
1a0bdadb4e36aba drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Takahiroi Shimizu 2012-03-07 2521
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2522 netdev->netdev_ops = &pch_gbe_netdev_ops;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2523 netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2524 netif_napi_add(netdev, &adapter->napi,
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2525 pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT);
756a6b03da98903 drivers/net/pch_gbe/pch_gbe_main.c Michał Mirosław 2011-04-19 2526 netdev->hw_features = NETIF_F_RXCSUM |
756a6b03da98903 drivers/net/pch_gbe/pch_gbe_main.c Michał Mirosław 2011-04-19 2527 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
756a6b03da98903 drivers/net/pch_gbe/pch_gbe_main.c Michał Mirosław 2011-04-19 2528 netdev->features = netdev->hw_features;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2529 pch_gbe_set_ethtool_ops(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2530
44770e1180decf9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Jarod Wilson 2016-10-17 2531 /* MTU range: 46 - 10300 */
44770e1180decf9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Jarod Wilson 2016-10-17 2532 netdev->min_mtu = ETH_ZLEN - ETH_HLEN;
44770e1180decf9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Jarod Wilson 2016-10-17 2533 netdev->max_mtu = PCH_GBE_MAX_JUMBO_FRAME_SIZE -
44770e1180decf9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Jarod Wilson 2016-10-17 2534 (ETH_HLEN + ETH_FCS_LEN);
44770e1180decf9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Jarod Wilson 2016-10-17 2535
98200ec28a66c8d drivers/net/pch_gbe/pch_gbe_main.c Toshiharu Okada 2011-02-13 2536 pch_gbe_mac_load_mac_addr(&adapter->hw);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2537 pch_gbe_mac_reset_hw(&adapter->hw);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2538
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2539 /* setup the private structure */
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2540 ret = pch_gbe_sw_init(adapter);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2541 if (ret)
29cc436cb90da4c drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Andy Shevchenko 2013-06-28 2542 goto err_free_netdev;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2543
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2544 /* Initialize PHY */
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2545 ret = pch_gbe_init_phy(adapter);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2546 if (ret) {
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2547 dev_err(&pdev->dev, "PHY initialize error\n");
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2548 goto err_free_adapter;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2549 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2550
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2551 /* Read the MAC address. and store to the private data */
9c020d7b0525d3b drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Paul Burton 2018-06-22 2552 ret = pch_gbe_mac_read_mac_addr(&adapter->hw);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2553 if (ret) {
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2554 dev_err(&pdev->dev, "MAC address Read Error\n");
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2555 goto err_free_adapter;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2556 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2557
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2558 memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2559 if (!is_valid_ether_addr(netdev->dev_addr)) {
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2560 /*
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2561 * If the MAC is invalid (or just missing), display a warning
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2562 * but do not abort setting up the device. pch_gbe_up will
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2563 * prevent the interface from being brought up until a valid MAC
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2564 * is set.
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2565 */
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2566 dev_err(&pdev->dev, "Invalid MAC address, "
2b53d07891630de drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2012-01-16 2567 "interface disabled.\n");
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2568 }
e99e88a9d2b0674 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Kees Cook 2017-10-16 2569 timer_setup(&adapter->watchdog_timer, pch_gbe_watchdog, 0);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2570
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2571 INIT_WORK(&adapter->reset_task, pch_gbe_reset_task);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2572
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2573 pch_gbe_check_options(adapter);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2574
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2575 /* initialize the wol settings based on the eeprom settings */
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2576 adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2577 dev_info(&pdev->dev, "MAC address : %pM\n", netdev->dev_addr);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2578
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2579 /* reset the hardware with the new settings */
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2580 pch_gbe_reset(adapter);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2581
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2582 ret = register_netdev(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2583 if (ret)
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2584 goto err_free_adapter;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2585 /* tell the stack to leave us alone until pch_gbe_open() is called */
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2586 netif_carrier_off(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2587 netif_stop_queue(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2588
1a0bdadb4e36aba drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Takahiroi Shimizu 2012-03-07 2589 dev_dbg(&pdev->dev, "PCH Network Connection\n");
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2590
f1a26fdf5944ff9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2013-05-18 2591 /* Disable hibernation on certain platforms */
f1a26fdf5944ff9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2013-05-18 2592 if (adapter->pdata && adapter->pdata->phy_disable_hibernate)
f1a26fdf5944ff9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2013-05-18 2593 pch_gbe_phy_disable_hibernate(&adapter->hw);
f1a26fdf5944ff9 drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Darren Hart 2013-05-18 2594
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2595 device_set_wakeup_enable(&pdev->dev, 1);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2596 return 0;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2597
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2598 err_free_adapter:
7dbe38aed0ba01e drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c Paul Burton 2018-06-22 2599 pch_gbe_phy_hw_reset(&adapter->hw);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2600 err_free_netdev:
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2601 free_netdev(netdev);
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2602 return ret;
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2603 }
77555ee72282342 drivers/net/pch_gbe/pch_gbe_main.c Masayuki Ohtake 2010-09-21 2604

:::::: The code at line 2482 was first introduced by commit
:::::: 8ff39301efd9d21cd62caad3504aa8d6e35d8304 net: pch_gbe: Use dma_set_mask_and_coherent to simplify code

:::::: TO: Christophe JAILLET<christophe.jaillet@xxxxxxxxxx>
:::::: CC: Jakub Kicinski<kuba@xxxxxxxxxx>

---
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In reply to: Nathan Chancellor: "Re: [dborkman-bpf:pr/bpf-tstamp 3/3] drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c:2482:44: warning: shift count >= width of type"
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