[android-common:android14-6.1 4/4] net/bluetooth/hci_conn.c:1807:7-14: WARNING opportunity for kmemdup

[kernel test robot <lkp@intel.com>]

tree:   https://android.googlesource.com/kernel/common android14-6.1
head:   f26a1f4f9013533dd2b0de85e6813f948363a4ff
commit: 4aa515393f02f69cb33121f8aac9078c6c925297 [4/4] Bluetooth: ISO: use hci_sync for setting CIG parameters
config: i386-randconfig-2103-20260923 (https://download.01.org/0day-ci/archive/20260923/202609232327.ztAxhH6f-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609232327.ztAxhH6f-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> net/bluetooth/hci_conn.c:1807:7-14: WARNING opportunity for kmemdup

vim +1807 net/bluetooth/hci_conn.c

  1731	
  1732	static bool hci_le_set_cig_params(struct hci_conn *conn, struct bt_iso_qos *qos)
  1733	{
  1734		struct hci_dev *hdev = conn->hdev;
  1735		struct iso_list_data data;
  1736		struct iso_cig_params *pdu;
  1737	
  1738		memset(&data, 0, sizeof(data));
  1739	
  1740		/* Allocate a CIG if not set */
  1741		if (qos->cig == BT_ISO_QOS_CIG_UNSET) {
  1742			for (data.cig = 0x00; data.cig < 0xff; data.cig++) {
  1743				data.count = 0;
  1744				data.cis = 0xff;
  1745	
  1746				hci_conn_hash_list_state(hdev, cis_list, ISO_LINK,
  1747							 BT_BOUND, &data);
  1748				if (data.count)
  1749					continue;
  1750	
  1751				hci_conn_hash_list_state(hdev, cis_list, ISO_LINK,
  1752							 BT_CONNECTED, &data);
  1753				if (!data.count)
  1754					break;
  1755			}
  1756	
  1757			if (data.cig == 0xff)
  1758				return false;
  1759	
  1760			/* Update CIG */
  1761			qos->cig = data.cig;
  1762		}
  1763	
  1764		data.pdu.cp.cig_id = qos->cig;
  1765		hci_cpu_to_le24(qos->out.interval, data.pdu.cp.c_interval);
  1766		hci_cpu_to_le24(qos->in.interval, data.pdu.cp.p_interval);
  1767		data.pdu.cp.sca = qos->sca;
  1768		data.pdu.cp.packing = qos->packing;
  1769		data.pdu.cp.framing = qos->framing;
  1770		data.pdu.cp.c_latency = cpu_to_le16(qos->out.latency);
  1771		data.pdu.cp.p_latency = cpu_to_le16(qos->in.latency);
  1772	
  1773		if (qos->cis != BT_ISO_QOS_CIS_UNSET) {
  1774			data.count = 0;
  1775			data.cig = qos->cig;
  1776			data.cis = qos->cis;
  1777	
  1778			hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND,
  1779						 &data);
  1780			if (data.count)
  1781				return false;
  1782	
  1783			cis_add(&data, qos);
  1784		}
  1785	
  1786		/* Reprogram all CIS(s) with the same CIG */
  1787		for (data.cig = qos->cig, data.cis = 0x00; data.cis < 0x11;
  1788		     data.cis++) {
  1789			data.count = 0;
  1790	
  1791			hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND,
  1792						 &data);
  1793			if (data.count)
  1794				continue;
  1795	
  1796			/* Allocate a CIS if not set */
  1797			if (qos->cis == BT_ISO_QOS_CIS_UNSET) {
  1798				/* Update CIS */
  1799				qos->cis = data.cis;
  1800				cis_add(&data, qos);
  1801			}
  1802		}
  1803	
  1804		if (qos->cis == BT_ISO_QOS_CIS_UNSET || !data.pdu.cp.num_cis)
  1805			return false;
  1806	
> 1807		pdu = kzalloc(sizeof(*pdu), GFP_KERNEL);
  1808		if (!pdu)
  1809			return false;
  1810	
  1811		memcpy(pdu, &data.pdu, sizeof(*pdu));
  1812	
  1813		if (hci_cmd_sync_queue(hdev, set_cig_params_sync, pdu,
  1814				       set_cig_params_complete) < 0) {
  1815			kfree(pdu);
  1816			return false;
  1817		}
  1818	
  1819		return true;
  1820	}
  1821	

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