static int wf_lm75_probe()

in windfarm_lm75_sensor.c [91:149]

• 47 lines of code
• 14 McCabe index (conditional complexity)

static int wf_lm75_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{	
	struct wf_lm75_sensor *lm;
	int rc, ds1775;
	const char *name, *loc;

	if (id)
		ds1775 = id->driver_data;
	else
		ds1775 = !!of_device_get_match_data(&client->dev);

	DBG("wf_lm75: creating  %s device at address 0x%02x\n",
	    ds1775 ? "ds1775" : "lm75", client->addr);

	loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL);
	if (!loc) {
		dev_warn(&client->dev, "Missing hwsensor-location property!\n");
		return -ENXIO;
	}

	/* Usual rant about sensor names not beeing very consistent in
	 * the device-tree, oh well ...
	 * Add more entries below as you deal with more setups
	 */
	if (!strcmp(loc, "Hard drive") || !strcmp(loc, "DRIVE BAY"))
		name = "hd-temp";
	else if (!strcmp(loc, "Incoming Air Temp"))
		name = "incoming-air-temp";
	else if (!strcmp(loc, "ODD Temp"))
		name = "optical-drive-temp";
	else if (!strcmp(loc, "HD Temp"))
		name = "hard-drive-temp";
	else if (!strcmp(loc, "PCI SLOTS"))
		name = "slots-temp";
	else if (!strcmp(loc, "CPU A INLET"))
		name = "cpu-inlet-temp-0";
	else if (!strcmp(loc, "CPU B INLET"))
		name = "cpu-inlet-temp-1";
	else
		return -ENXIO;
 	

	lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
	if (lm == NULL)
		return -ENODEV;

	lm->inited = 0;
	lm->ds1775 = ds1775;
	lm->i2c = client;
	lm->sens.name = name;
	lm->sens.ops = &wf_lm75_ops;
	i2c_set_clientdata(client, lm);

	rc = wf_register_sensor(&lm->sens);
	if (rc)
		kfree(lm);
	return rc;
}