static int scsi_ioctl_get_pci(struct scsi_device *sdev, void __user *arg)
{
struct device *dev = scsi_get_device(sdev->host);
+ const char *name;
if (!dev)
return -ENXIO;
- return copy_to_user(arg, dev->bus_id, sizeof(dev->bus_id))? -EFAULT: 0;
+
+ name = dev_name(dev);
+
+ /* compatibility with old ioctl which only returned
+ * 20 characters */
+ return copy_to_user(arg, name, min(strlen(name), (size_t)20))
+ ? -EFAULT: 0;
}