On 13-Jan-2022, at 4:17 PM, gregkh@linuxfoundation.org wrote:

The patch below does not apply to the 5.16-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 3318ae23bbcb14b7f68e9006756ba6d970955635 Mon Sep 17 00:00:00 2001 From: Aditya Garg gargaditya08@live.com Date: Mon, 3 Jan 2022 13:28:42 +0000 Subject: [PATCH] Bluetooth: btbcm: disable read tx power for MacBook Air 8,1 and 8,2

The MacBook Air 8,1 and 8,2 also need querying of LE Tx power to be disabled for Bluetooth to work.

Signed-off-by: Aditya Garg gargaditya08@live.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Cc: stable@vger.kernel.org --- drivers/bluetooth/btbcm.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)

diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c index 07fabaa5a..d9ceca7a7 100644 --- a/drivers/bluetooth/btbcm.c +++ b/drivers/bluetooth/btbcm.c @@ -363,6 +363,18 @@ static const struct dmi_system_id disable_broken_read_transmit_power[] = { DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"), }, }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"), + }, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"), + }, + }, { .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),