[PATCH] Bluetooth: btmtk: hide unused btmtk_mt6639_devs[] array
Paul Menzel
pmenzel at molgen.mpg.de
Thu Apr 2 08:41:25 PDT 2026
Dear Arnd,
Thank you for your patch.
Am 02.04.26 um 16:11 schrieb Arnd Bergmann:
> From: Arnd Bergmann <arnd at arndb.de>
>
> When USB support is disabled, the array is not referenced anywhere,
> causing a warning:
>
> drivers/bluetooth/btmtk.c:35:3: error: 'btmtk_mt6639_devs' defined but not used [-Werror=unused-const-variable=]
> 35 | } btmtk_mt6639_devs[] = {
> | ^~~~~~~~~~~~~~~~~
>
> Move it into the #ifdef block.
>
> Fixes: 4cdd001ff03f ("Bluetooth: btmtk: Add MT6639 (MT7927) Bluetooth support")
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> ---
> drivers/bluetooth/btmtk.c | 32 ++++++++++++++++----------------
> 1 file changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
> index 099188bf772e..6fb6ca274808 100644
> --- a/drivers/bluetooth/btmtk.c
> +++ b/drivers/bluetooth/btmtk.c
> @@ -25,22 +25,6 @@
> /* It is for mt79xx iso data transmission setting */
> #define MTK_ISO_THRESHOLD 264
>
> -/* Known MT6639 (MT7927) Bluetooth USB devices.
> - * Used to scope the zero-CHIPID workaround to real MT6639 hardware,
> - * since some boards return 0x0000 from the MMIO chip ID register.
> - */
> -static const struct {
> - u16 vendor;
> - u16 product;
> -} btmtk_mt6639_devs[] = {
> - { 0x0489, 0xe13a }, /* ASUS ROG Crosshair X870E Hero */
> - { 0x0489, 0xe0fa }, /* Lenovo Legion Pro 7 16ARX9 */
> - { 0x0489, 0xe10f }, /* Gigabyte Z790 AORUS MASTER X */
> - { 0x0489, 0xe110 }, /* MSI X870E Ace Max */
> - { 0x0489, 0xe116 }, /* TP-Link Archer TBE550E */
> - { 0x13d3, 0x3588 }, /* ASUS ROG STRIX X870E-E */
> -};
> -
> struct btmtk_patch_header {
> u8 datetime[16];
> u8 platform[4];
> @@ -483,6 +467,22 @@ 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)
> +/* Known MT6639 (MT7927) Bluetooth USB devices.
> + * Used to scope the zero-CHIPID workaround to real MT6639 hardware,
> + * since some boards return 0x0000 from the MMIO chip ID register.
> + */
> +static const struct {
> + u16 vendor;
> + u16 product;
> +} btmtk_mt6639_devs[] = {
> + { 0x0489, 0xe13a }, /* ASUS ROG Crosshair X870E Hero */
> + { 0x0489, 0xe0fa }, /* Lenovo Legion Pro 7 16ARX9 */
> + { 0x0489, 0xe10f }, /* Gigabyte Z790 AORUS MASTER X */
> + { 0x0489, 0xe110 }, /* MSI X870E Ace Max */
> + { 0x0489, 0xe116 }, /* TP-Link Archer TBE550E */
> + { 0x13d3, 0x3588 }, /* ASUS ROG STRIX X870E-E */
> +};
> +
> static void btmtk_usb_wmt_recv(struct urb *urb)
> {
> struct hci_dev *hdev = urb->context;
Reviewed-by: Paul Menzel <pmenzel at molgen.mpg.de>
Kind regards,
Paul
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