This is a note to let you know that I've just added the patch titled
Bluetooth: qca: Fix poor RF performance for WCN6855
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-qca-fix-poor-rf-performance-for-wcn6855.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2e5d6e22149a5c3076dd5438b6b57bd878b7c1bf
Author: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
Date: Mon Jan 13 22:43:23 2025 +0800
Bluetooth: qca: Fix poor RF performance for WCN6855
[ Upstream commit a2fad248947d702ed3dcb52b8377c1a3ae201e44 ]
For WCN6855, board ID specific NVM needs to be downloaded once board ID
is available, but the default NVM is always downloaded currently.
The wrong NVM causes poor RF performance, and effects user experience
for several types of laptop with WCN6855 on the market.
Fix by downloading board ID specific NVM if board ID is available.
Fixes: 095327fede00 ("Bluetooth: hci_qca: Add support for QTI Bluetooth chip wcn6855")
Cc: stable@xxxxxxxxxxxxxxx # 6.4
Signed-off-by: Zijun Hu <quic_zijuhu@xxxxxxxxxxx>
Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Tested-by: Steev Klimaszewski <steev@xxxxxxxx> #Thinkpad X13s
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 484a860785fde..892e2540f008a 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -927,8 +927,9 @@ int qca_uart_setup(struct hci_dev *hdev, uint8_t baudrate,
"qca/msnv%02x.bin", rom_ver);
break;
case QCA_WCN6855:
- snprintf(config.fwname, sizeof(config.fwname),
- "qca/hpnv%02x.bin", rom_ver);
+ qca_read_fw_board_id(hdev, &boardid);
+ qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
+ "hpnv", soc_type, ver, rom_ver, boardid);
break;
case QCA_WCN7850:
qca_get_nvm_name_by_board(config.fwname, sizeof(config.fwname),
