forked from luck/tmp_suning_uos_patched
7bcf5c0e7f
This fixes a bug in the environment variables for all PCI device hotplug calls. Thanks to Kay Sievers for pointing out the problem. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/module.h>
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#include "pci.h"
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int pci_hotplug (struct device *dev, char **envp, int num_envp,
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char *buffer, int buffer_size)
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{
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struct pci_dev *pdev;
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char *scratch;
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int i = 0;
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int length = 0;
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if (!dev)
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return -ENODEV;
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pdev = to_pci_dev(dev);
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if (!pdev)
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return -ENODEV;
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scratch = buffer;
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if (add_hotplug_env_var(envp, num_envp, &i,
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buffer, buffer_size, &length,
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"PCI_CLASS=%04X", pdev->class))
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return -ENOMEM;
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if (add_hotplug_env_var(envp, num_envp, &i,
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buffer, buffer_size, &length,
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"PCI_ID=%04X:%04X", pdev->vendor, pdev->device))
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return -ENOMEM;
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if (add_hotplug_env_var(envp, num_envp, &i,
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buffer, buffer_size, &length,
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"PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor,
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pdev->subsystem_device))
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return -ENOMEM;
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if (add_hotplug_env_var(envp, num_envp, &i,
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buffer, buffer_size, &length,
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"PCI_SLOT_NAME=%s", pci_name(pdev)))
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return -ENOMEM;
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if (add_hotplug_env_var(envp, num_envp, &i,
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buffer, buffer_size, &length,
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"MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x",
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pdev->vendor, pdev->device,
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pdev->subsystem_vendor, pdev->subsystem_device,
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(u8)(pdev->class >> 16), (u8)(pdev->class >> 8),
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(u8)(pdev->class)))
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return -ENOMEM;
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envp[i] = NULL;
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return 0;
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}
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