From: Max Chou Date: Tue, 30 May 2023 08:34:20 +0000 (+0800) Subject: Bluetooth: btrtl: Correct the length of the HCI command for drop fw X-Git-Tag: v6.6.7~2079^2~129^2~58 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6b42f04e241732158592aac6241822cd6b4a7aae;p=platform%2Fkernel%2Flinux-starfive.git Bluetooth: btrtl: Correct the length of the HCI command for drop fw The original code did not determine the length value of the HCI command for drop fw even there's no parameter needed. In this commit, use struct hci_command_hdr to manage opcode and length. It would be more regular and more readable. Suggested-by: Alex Lu Signed-off-by: Max Chou Signed-off-by: Luiz Augusto von Dentz --- diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index 9a6ae8a..04399b3 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -1044,12 +1044,11 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev; struct sk_buff *skb; struct hci_rp_read_local_version *resp; + struct hci_command_hdr *cmd; char cfg_name[40]; u16 hci_rev, lmp_subver; u8 hci_ver, lmp_ver, chip_type = 0; int ret; - u16 opcode; - u8 cmd[2]; u8 reg_val[2]; btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); @@ -1118,15 +1117,14 @@ next: btrtl_dev->drop_fw = false; if (btrtl_dev->drop_fw) { - opcode = hci_opcode_pack(0x3f, 0x66); - cmd[0] = opcode & 0xff; - cmd[1] = opcode >> 8; - - skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); + skb = bt_skb_alloc(sizeof(*cmd), GFP_KERNEL); if (!skb) goto err_free; - skb_put_data(skb, cmd, sizeof(cmd)); + cmd = skb_put(skb, HCI_COMMAND_HDR_SIZE); + cmd->opcode = cpu_to_le16(0xfc66); + cmd->plen = 0; + hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; ret = hdev->send(hdev, skb);