MediaTek moved some usb interface related function to btmtk.c which may cause build failed if BT USB Kconfig wasn't enabled. Fix undefined reference by adding config check. btmtk.c:(.text+0x89c): undefined reference to `usb_alloc_urb' btmtk.c:(.text+0x8e3): undefined reference to `usb_free_urb' btmtk.c:(.text+0x956): undefined reference to `usb_free_urb' btmtk.c:(.text+0xa0e): undefined reference to `usb_anchor_urb' btmtk.c:(.text+0xb43): undefined reference to `usb_autopm_get_interface' btmtk.c:(.text+0xb7e): undefined reference to `usb_autopm_put_interface' btmtk.c:(.text+0xf70): undefined reference to `usb_disable_autosuspend' btmtk.c:(.text+0x133a): undefined reference to `usb_control_msg' Fixes: d019930b0049 ("Bluetooth: btmtk: move btusb_mtk_hci_wmt_sync to btmtk.c") Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202407091928.AH0aGZnx-lkp@xxxxxxxxx/ Signed-off-by: Chris Lu <chris.lu@xxxxxxxxxxxx> --- Change from v3 to v4: -rebase code base --- drivers/bluetooth/btmtk.c | 2 ++ drivers/bluetooth/btmtk.h | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c index 191bc6925120..2b7c80043aa2 100644 --- a/drivers/bluetooth/btmtk.c +++ b/drivers/bluetooth/btmtk.c @@ -437,6 +437,7 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb) } EXPORT_SYMBOL_GPL(btmtk_process_coredump); +#if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) static void btmtk_usb_wmt_recv(struct urb *urb) { struct hci_dev *hdev = urb->context; @@ -1488,6 +1489,7 @@ int btmtk_usb_shutdown(struct hci_dev *hdev) return 0; } EXPORT_SYMBOL_GPL(btmtk_usb_shutdown); +#endif MODULE_AUTHOR("Sean Wang <sean.wang@xxxxxxxxxxxx>"); MODULE_AUTHOR("Mark Chen <mark-yw.chen@xxxxxxxxxxxx>"); diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h index 5df7c3296624..6fc69cd8636b 100644 --- a/drivers/bluetooth/btmtk.h +++ b/drivers/bluetooth/btmtk.h @@ -202,6 +202,7 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb); void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver, u32 fw_flavor); +#if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) int btmtk_usb_subsys_reset(struct hci_dev *hdev, u32 dev_id); int btmtk_usb_recv_acl(struct hci_dev *hdev, struct sk_buff *skb); @@ -216,6 +217,7 @@ int btmtk_usb_suspend(struct hci_dev *hdev); int btmtk_usb_setup(struct hci_dev *hdev); int btmtk_usb_shutdown(struct hci_dev *hdev); +#endif #else static inline int btmtk_set_bdaddr(struct hci_dev *hdev, -- 2.18.0