drivers/pci/hotplug.c

   1 #include <linux/kernel.h>
   2 #include <linux/pci.h>
   3 #include <linux/module.h>
   4 #include "pci.h"
   5
   6 int pci_hotplug (struct device *dev, char **envp, int num_envp,
   7                  char *buffer, int buffer_size)
   8 {
   9         struct pci_dev *pdev;
  10         char *scratch;
  11         int i = 0;
  12         int length = 0;
  13
  14         if (!dev)
  15                 return -ENODEV;
  16
  17         pdev = to_pci_dev(dev);
  18         if (!pdev)
  19                 return -ENODEV;
  20
  21         scratch = buffer;
  22
  23
  24         if (add_hotplug_env_var(envp, num_envp, &i,
  25                                 buffer, buffer_size, &length,
  26                                 "PCI_CLASS=%04X", pdev->class))
  27                 return -ENOMEM;
  28
  29         if (add_hotplug_env_var(envp, num_envp, &i,
  30                                 buffer, buffer_size, &length,
  31                                 "PCI_ID=%04X:%04X", pdev->vendor, pdev->device))
  32                 return -ENOMEM;
  33
  34         if (add_hotplug_env_var(envp, num_envp, &i,
  35                                 buffer, buffer_size, &length,
  36                                 "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
  37                                 pdev->subsystem_device))
  38                 return -ENOMEM;
  39
  40         if (add_hotplug_env_var(envp, num_envp, &i,
  41                                 buffer, buffer_size, &length,
  42                                 "PCI_SLOT_NAME=%s", pci_name(pdev)))
  43                 return -ENOMEM;
  44
  45         if (add_hotplug_env_var(envp, num_envp, &i,
  46                                 buffer, buffer_size, &length,
  47                                 "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x",
  48                                 pdev->vendor, pdev->device,
  49                                 pdev->subsystem_vendor, pdev->subsystem_device,
  50                                 (u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
  51                                 (u8)(pdev->class)))
  52                 return -ENOMEM;
  53
  54         envp[i] = NULL;
  55
  56         return 0;
  57 }