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[118.232.8.190]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-364ebefe7fesm13737453a91.5.2026.05.05.00.25.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 May 2026 00:25:43 -0700 (PDT) From: Zenm Chen To: max.chou@realtek.com Cc: hildawu@realtek.com, linux-bluetooth@vger.kernel.org, pkshih@realtek.com, zenmchen@gmail.com Subject: RE: bluetooth hci0: Direct firmware load for rtl_bt/rtl8761a_config.bin failed with error -2 Date: Tue, 5 May 2026 15:25:33 +0800 Message-ID: <20260505072538.9503-1-zenmchen@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Max Chou 於 2026年4月30日週四 上午10:22寫道： > > Hi! > The config file rtl8761a_config is not mandatory. In ic_id_table[], > .config_needed is indeed set to false. Please rest assured regarding > this matter. > If you would like to fix the warning message, it would be good to > send a patch to add rtl8761a_config.bin containing only the header > to the linux-firmware repository. > > BRs, > Max > Hi Max, Thank you for the clarification! After adding an empty config file, Bluetooth is working as usual and the error message doesn't appear anymore. $ od -t x1 /lib/firmware/rtl_bt/rtl8761bu_config.bin 0000000 55 ab 23 87 00 00 0000006 $ ls /lib/firmware/rtl_bt/rtl8761{a,bu}_config.bin lrwxrwxrwx 1 root root 20 Apr 30 22:24 /lib/firmware/rtl_bt/rtl8761a_config.bin -> rtl8761bu_config.bin -rw-r--r-- 1 root root 6 Mar 5 01:40 /lib/firmware/rtl_bt/rtl8761bu_config.bin $ dmesg [ 550.038863] Bluetooth: Core ver 2.22 [ 550.038897] NET: Registered PF_BLUETOOTH protocol family [ 550.038899] Bluetooth: HCI device and connection manager initialized [ 550.038904] Bluetooth: HCI socket layer initialized [ 550.038906] Bluetooth: L2CAP socket layer initialized [ 550.038910] Bluetooth: SCO socket layer initialized [ 550.070541] usbcore: registered new interface driver btusb [ 550.077485] Bluetooth: hci0: RTL: examining hci_ver=06 hci_rev=000a lmp_ver=06 lmp_subver=8761 [ 550.079510] Bluetooth: hci0: RTL: rom_version status=0 version=3 [ 550.081469] Bluetooth: hci0: RTL: btrtl_initialize: key id 0 [ 550.081475] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_fw.bin [ 550.083538] Bluetooth: hci0: RTL: loading rtl_bt/rtl8761a_config.bin [ 550.083853] Bluetooth: hci0: RTL: cfg_sz 6, total sz 22646 [ 550.167668] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 550.167674] Bluetooth: BNEP filters: protocol multicast [ 550.167679] Bluetooth: BNEP socket layer initialized [ 550.659710] Bluetooth: hci0: RTL: fw version 0x0e3e4380 [ 550.800287] Bluetooth: MGMT ver 1.22 [ 550.819174] NET: Registered PF_ALG protocol family [ 550.857408] Bluetooth: RFCOMM TTY layer initialized [ 550.857422] Bluetooth: RFCOMM socket layer initialized [ 550.857433] Bluetooth: RFCOMM ver 1.11