-#define DRIVER_BUF_SIZE 1024
-
-static char *
-find_driver(struct device *d, char *buf)
-{
- struct pci_dev *dev = d->dev;
- char name[1024], *drv, *base;
- int n;
-
- if (dev->access->method != PCI_ACCESS_SYS_BUS_PCI)
- return NULL;
-
- base = pci_get_param(dev->access, "sysfs.path");
- if (!base || !base[0])
- return NULL;
-
- n = snprintf(name, sizeof(name), "%s/devices/%04x:%02x:%02x.%d/driver",
- base, dev->domain, dev->bus, dev->dev, dev->func);
- if (n < 0 || n >= (int)sizeof(name))
- die("show_driver: sysfs device name too long, why?");
-
- n = readlink(name, buf, DRIVER_BUF_SIZE);
- if (n < 0)
- return NULL;
- if (n >= DRIVER_BUF_SIZE)
- return "<name-too-long>";
- buf[n] = 0;
-
- if (drv = strrchr(buf, '/'))
- return drv+1;
- else
- return buf;
-}
-