From patchwork Wed Mar 20 07:55:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 13597455 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B2C32C6B5; Wed, 20 Mar 2024 07:58:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710921499; cv=none; b=ozYDm8X6CvlkA76Jp0n9O8VdO62d2mwuVIOsJjoX6o+rWGnKSutyFqpLiN6nDYOIQyn9SbJo3R1X1jZbMSXOqnc7qAluILD8nVLjX5OQwJPnNptuxVwbXEYSPkrLyVI34fTy8W/NMejKtGa/ohczTnv/cgVuMxrqZM0+BAMVhzA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710921499; c=relaxed/simple; bh=jMwtybi/vY23D4ux1YBawunur6a8HYoEY3QxQ+/Xaks=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D/DOe4EbtquMsv1RTeaDivbi1NUOUbQDzD/xBQPRj7X+pMYO2BNrQZUg9NCwTFEWI1J6A/FiHq508T+AZuySkF5H3IBKAItgwo1kWHR0uisVEJ+rByqQwps+WCSXFHDrNvnvSOQg84SUCXWq+FId/y/hFCAFxvM7NjD9GzXNhLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LS9BStrb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LS9BStrb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14B87C433A6; Wed, 20 Mar 2024 07:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710921499; bh=jMwtybi/vY23D4ux1YBawunur6a8HYoEY3QxQ+/Xaks=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LS9BStrbKU6UmW+ub3pVIJtdgxGz4vgAD+ZGiEFJDZDHzB0ZafWf+Ct2gVVwsBSqW cwXiwLZyUzjHcdfRYPqtfqdmEPvNaQS/MbAataMyCtxgESpBf+uZva7WwSWLXffTOL 4sCSnRt+fnL6ZowqObgV/yG5eDolPOxJB6udC0peUwJS1jXtG3bDjV8Dy0r3uRnEsw bE3HJf0l2EEX0GqkND3obUUVmVsKtAV3Vh2k/gWem2QuS5IlWQrZNGJQ+MIkPlpD+E udCdBvcuOSEuaeH7q5mhcTfJqJa5G0gyjz276l/w5oNjcxMcVGzmUBXSxpHXs60wVZ fsHmS/U4Ux/6A== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rmqq9-0000000029Q-24gf; Wed, 20 Mar 2024 08:58:25 +0100 From: Johan Hovold To: Marcel Holtmann , Luiz Augusto von Dentz , Bjorn Andersson Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org, Konrad Dybcio , Johan Hedberg , Balakrishna Godavarthi , Matthias Kaehlcke , Douglas Anderson , Rocky Liao , Dmitry Baryshkov , linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH v4 3/4] Bluetooth: add quirk for broken address properties Date: Wed, 20 Mar 2024 08:55:53 +0100 Message-ID: <20240320075554.8178-4-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240320075554.8178-1-johan+linaro@kernel.org> References: <20240320075554.8178-1-johan+linaro@kernel.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Some Bluetooth controllers lack persistent storage for the device address and instead one can be provided by the boot firmware using the 'local-bd-address' devicetree property. The Bluetooth devicetree bindings clearly states that the address should be specified in little-endian order, but due to a long-standing bug in the Qualcomm driver which reversed the address some boot firmware has been providing the address in big-endian order instead. Add a new quirk that can be set on platforms with broken firmware and use it to reverse the address when parsing the property so that the underlying driver bug can be fixed. Fixes: 5c0a1001c8be ("Bluetooth: hci_qca: Add helper to set device address") Cc: stable@vger.kernel.org # 5.1 Reviewed-by: Douglas Anderson Signed-off-by: Johan Hovold --- include/net/bluetooth/hci.h | 9 +++++++++ net/bluetooth/hci_sync.c | 5 ++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index bdee5d649cc6..191077d8d578 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -176,6 +176,15 @@ enum { */ HCI_QUIRK_USE_BDADDR_PROPERTY, + /* When this quirk is set, the Bluetooth Device Address provided by + * the 'local-bd-address' fwnode property is incorrectly specified in + * big-endian order. + * + * This quirk can be set before hci_register_dev is called or + * during the hdev->setup vendor callback. + */ + HCI_QUIRK_BDADDR_PROPERTY_BROKEN, + /* When this quirk is set, the duplicate filtering during * scanning is based on Bluetooth devices addresses. To allow * RSSI based updates, restart scanning if needed. diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 5716345a26df..283ae8edc1e5 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -3215,7 +3215,10 @@ static void hci_dev_get_bd_addr_from_property(struct hci_dev *hdev) if (ret < 0 || !bacmp(&ba, BDADDR_ANY)) return; - bacpy(&hdev->public_addr, &ba); + if (test_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks)) + baswap(&hdev->public_addr, &ba); + else + bacpy(&hdev->public_addr, &ba); } struct hci_init_stage {