linux-kernel - Re: [PATCH v2] Bluetooth: btmtk: Fix btmtk.c undefined reference build error

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Message-ID: <261d8aad-5188-4c08-8c3d-34c2e00db2e6@molgen.mpg.de>
Date: Wed, 10 Jul 2024 13:00:38 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Chris Lu <chris.lu@...iatek.com>
Cc: Marcel Holtmann <marcel@...tmann.org>,
 Johan Hedberg <johan.hedberg@...il.com>,
 Luiz Von Dentz <luiz.dentz@...il.com>, Sean Wang <sean.wang@...iatek.com>,
 Aaron Hou <aaron.hou@...iatek.com>, Steve Lee <steve.lee@...iatek.com>,
 linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2] Bluetooth: btmtk: Fix btmtk.c undefined reference
 build error

Dear Chris,


Am 10.07.24 um 11:26 schrieb Chris Lu:
> MediaTek move some usb interface related function to btmtk.c which

move*d*

Maybe add … in commit XXX ("yyy") … in that sentence.

> may cause build failed if BT USB Kconfig wasn't enabled.

Is not enabling BT USB Kconfig when using btmtk a valid use-case?

> 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: 39a9e1c69e74 ("Bluetooth: btmtk: move btusb_mtk_hci_wmt_sync to btmtk.c")
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202407091928.AH0aGZnx-lkp@intel.com/
> Co-developed-by: Sean Wang <sean.wang@...iatek.com>
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> Signed-off-by: Chris Lu <chris.lu@...iatek.com>
> ---
> Change from v1 to v2:
> -fix and update commit message warning
> ---
>   drivers/bluetooth/btmtk.c | 2 ++
>   drivers/bluetooth/btmtk.h | 4 ++++
>   2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
> index b7c348687a77..9789296ad4f6 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;
> @@ -1487,6 +1488,7 @@ int btmtk_usb_shutdown(struct hci_dev *hdev)
>   	return 0;
>   }
>   EXPORT_SYMBOL_GPL(btmtk_usb_shutdown);
> +#endif
>   
>   MODULE_AUTHOR("Sean Wang <sean.wang@...iatek.com>");
>   MODULE_AUTHOR("Mark Chen <mark-yw.chen@...iatek.com>");
> diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
> index 453ed5131a37..890dbe9beff8 100644
> --- a/drivers/bluetooth/btmtk.h
> +++ b/drivers/bluetooth/btmtk.h
> @@ -165,6 +165,7 @@ struct btmtk_data {
>   	btmtk_reset_sync_func_t reset_sync;
>   	struct btmtk_coredump_info cd_info;
>   
> +#if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK)
>   	struct usb_device *udev;
>   	struct usb_interface *intf;
>   	struct usb_anchor *ctrl_anchor;
> @@ -177,6 +178,7 @@ struct btmtk_data {
>   
>   	/* spinlock for ISO data transmission */
>   	spinlock_t isorxlock;
> +#endif
>   };
>   
>   typedef int (*wmt_cmd_sync_func_t)(struct hci_dev *,
> @@ -202,6 +204,7 @@ 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 +219,7 @@ 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,


Kind regards,

Paul