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         int i = 0;
  11         int length = 0;
  12
  13         if (!dev)
  14                 return -ENODEV;
  15
  16         pdev = to_pci_dev(dev);
  17         if (!pdev)
  18                 return -ENODEV;
  19
  20         if (add_hotplug_env_var(envp, num_envp, &i,
  21                                 buffer, buffer_size, &length,
  22                                 "PCI_CLASS=%04X", pdev->class))
  23                 return -ENOMEM;
  24
  25         if (add_hotplug_env_var(envp, num_envp, &i,
  26                                 buffer, buffer_size, &length,
  27                                 "PCI_ID=%04X:%04X", pdev->vendor, pdev->device))
  28                 return -ENOMEM;
  29
  30         if (add_hotplug_env_var(envp, num_envp, &i,
  31                                 buffer, buffer_size, &length,
  32                                 "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
  33                                 pdev->subsystem_device))
  34                 return -ENOMEM;
  35
  36         if (add_hotplug_env_var(envp, num_envp, &i,
  37                                 buffer, buffer_size, &length,
  38                                 "PCI_SLOT_NAME=%s", pci_name(pdev)))
  39                 return -ENOMEM;
  40
  41         if (add_hotplug_env_var(envp, num_envp, &i,
  42                                 buffer, buffer_size, &length,
  43                                 "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x",
  44                                 pdev->vendor, pdev->device,
  45                                 pdev->subsystem_vendor, pdev->subsystem_device,
  46                                 (u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
  47                                 (u8)(pdev->class)))
  48                 return -ENOMEM;
  49
  50         envp[i] = NULL;
  51
  52         return 0;
  53 }