static inline int pcmcia_devmatch()

in ds.c [796:896]

• 80 lines of code
• 38 McCabe index (conditional complexity)

static inline int pcmcia_devmatch(struct pcmcia_device *dev,
				  const struct pcmcia_device_id *did)
{
	if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) {
		if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) {
		if ((!dev->has_card_id) || (dev->card_id != did->card_id))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) {
		if (dev->func != did->function)
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) {
		if (!dev->prod_id[0])
			return 0;
		if (strcmp(did->prod_id[0], dev->prod_id[0]))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) {
		if (!dev->prod_id[1])
			return 0;
		if (strcmp(did->prod_id[1], dev->prod_id[1]))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) {
		if (!dev->prod_id[2])
			return 0;
		if (strcmp(did->prod_id[2], dev->prod_id[2]))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) {
		if (!dev->prod_id[3])
			return 0;
		if (strcmp(did->prod_id[3], dev->prod_id[3]))
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) {
		dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n");
		mutex_lock(&dev->socket->ops_mutex);
		dev->socket->pcmcia_pfc = 1;
		mutex_unlock(&dev->socket->ops_mutex);
		if (dev->device_no != did->device_no)
			return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) {
		int ret;

		if ((!dev->has_func_id) || (dev->func_id != did->func_id))
			return 0;

		/* if this is a pseudo-multi-function device,
		 * we need explicit matches */
		if (dev->socket->pcmcia_pfc)
			return 0;
		if (dev->device_no)
			return 0;

		/* also, FUNC_ID matching needs to be activated by userspace
		 * after it has re-checked that there is no possible module
		 * with a prod_id/manf_id/card_id match.
		 */
		mutex_lock(&dev->socket->ops_mutex);
		ret = dev->allow_func_id_match;
		mutex_unlock(&dev->socket->ops_mutex);

		if (!ret) {
			dev_dbg(&dev->dev,
				"skipping FUNC_ID match until userspace ACK\n");
			return 0;
		}
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) {
		dev_dbg(&dev->dev, "device needs a fake CIS\n");
		if (!dev->socket->fake_cis)
			if (pcmcia_load_firmware(dev, did->cisfile))
				return 0;
	}

	if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) {
		int i;
		for (i = 0; i < 4; i++)
			if (dev->prod_id[i])
				return 0;
		if (dev->has_manf_id || dev->has_card_id || dev->has_func_id)
			return 0;
	}

	return 1;
}