2 Replies Latest reply on Aug 3, 2017 4:57 PM by jeppeter

    not right on the wakenup state


      software :

      driver source code download http://www.mellanox.com/page/products_dyn?product_family=27

      with version 4.0.0

      kernel : ubuntu linux-4.4.0-generic



      mainboard : MSI C236A

      mlnx 0x6750 ethernet card


      normally running is ok ,

      but when i call pm-suspend --no-quirks or

      equally echo -n "mem" >/sys/power/state

      when it was waken up by keyboard ,the mlx4 0x6750 not running ok ,




      i debug with this problem ,i find that the slice different is in the code to read MLX4_OWNER_BASE




      static int mlx4_get_ownership(struct mlx4_dev *dev)



      void __iomem *owner;

      u32 ret;

      if (pci_channel_offline(dev->persist->pdev)){

      debug_info_mlx(" ");

      return -EIO;


      owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +



      if (!owner) {

      debug_info_mlx(" ");

      mlx4_err(dev, "Failed to obtain ownership bit\n");

      return -ENOMEM;


      ret = readl(owner);


      debug_info_mlx("ret %d", ret);

      return (int) !!ret;




      on normal the last debug is ret 0

      but when on the wakeup the insmod code is



      always this code


      i wonder how to reset the nic card to be read 0


      thank you