static int macio_device_probe(struct device *dev)
{
int error = -ENODEV;
struct macio_driver *drv;
struct macio_dev *macio_dev;
const struct of_device_id *match;
drv = to_macio_driver(dev->driver);
macio_dev = to_macio_device(dev);
if (!drv->probe)
return error;
macio_dev_get(macio_dev);
match = of_match_device(drv->driver.of_match_table, dev);
if (match)
error = drv->probe(macio_dev, match);
if (error)
macio_dev_put(macio_dev);
return error;
}
static int macio_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
struct macio_dev * macio_dev;
struct of_device * of;
char *scratch, *compat, *compat2;
int i = 0;
int length, cplen, cplen2, seen = 0;
if (!dev)
return -ENODEV;
macio_dev = to_macio_device(dev);
if (!macio_dev)
return -ENODEV;
of = &macio_dev->ofdev;
/* stuff we want to pass to /sbin/hotplug */
envp[i++] = scratch = buffer;
length = scnprintf (scratch, buffer_size, "OF_NAME=%s", of->node->name);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "OF_TYPE=%s", of->node->type);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
/* Since the compatible field can contain pretty much anything
* it's not really legal to split it out with commas. We split it
* up using a number of environment variables instead. */
compat = (char *) get_property(of->node, "compatible", &cplen);
compat2 = compat;
cplen2= cplen;
while (compat && cplen > 0) {
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size,
"OF_COMPATIBLE_%d=%s", seen, compat);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
length = strlen (compat) + 1;
compat += length;
cplen -= length;
seen++;
}
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "OF_COMPATIBLE_N=%d", seen);
++length;
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
envp[i++] = scratch;
length = scnprintf (scratch, buffer_size, "MODALIAS=of:N%sT%s",
of->node->name, of->node->type);
/* overwrite '\0' */
buffer_size -= length;
if ((buffer_size <= 0) || (i >= num_envp))
return -ENOMEM;
scratch += length;
if (!compat2) {
compat2 = "";
cplen2 = 1;
}
while (cplen2 > 0) {
length = snprintf (scratch, buffer_size, "C%s", compat2);
buffer_size -= length;
if (buffer_size <= 0)
return -ENOMEM;
scratch += length;
length = strlen (compat2) + 1;
compat2 += length;
cplen2 -= length;
}
envp[i] = NULL;
return 0;
}