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https://github.com/libretro/Lakka-LibreELEC.git
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bd80779d30
Found in some variants of Tanix TX6 Before: [ 7.512876] rtw_8822bs mmc2:0001:1: Firmware version 27.2.0, H2C version 13 [ 8.219545] Bluetooth: hci0: RTL: examining hci_ver=07 hci_rev=000b lmp_ver=07 lmp_subver=8822 [ 8.430833] Bluetooth: hci0: RTL: examining hci_ver=07 hci_rev=000b lmp_ver=07 lmp_subver=8822 [ 8.430866] Bluetooth: hci0: RTL: unknown IC info, lmp subver 8822, hci rev 000b, hci ver 0007 After: [ 8.958224] rtw_8822bs mmc2:0001:1: Firmware version 27.2.0, H2C version 13 [ 9.017294] Bluetooth: hci0: RTL: examining hci_ver=07 hci_rev=000b lmp_ver=07 lmp_subver=8822 [ 9.021399] Bluetooth: hci0: RTL: rom_version status=0 version=2 [ 9.021428] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822bs_fw.bin [ 9.024180] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822bs_config.bin [ 9.048050] Bluetooth: hci0: RTL: cfg_sz 25, total sz 23101 [ 10.316891] Bluetooth: hci0: RTL: fw version 0xaa6c133c
74 lines
2.8 KiB
Diff
74 lines
2.8 KiB
Diff
From: Bastian Germann <bage@debian.org>
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To: Rob Herring <robh+dt@kernel.org>,
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Maxime Ripard <mripard@kernel.org>,
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Chen-Yu Tsai <wens@csie.org>,
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Marcel Holtmann <marcel@holtmann.org>,
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Johan Hedberg <johan.hedberg@gmail.com>,
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"David S . Miller" <davem@davemloft.net>,
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Jakub Kicinski <kubakici@wp.pl>, devicetree@vger.kernel.org,
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linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
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linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org
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Cc: Vasily Khoruzhick <anarsoul@gmail.com>,
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Bastian Germann <bage@debian.org>
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Message-ID: <20220524212155.16944-2-bage@debian.org>
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Subject: [PATCH v2 1/3] Bluetooth: Add new quirk for broken local ext features
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max_page
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Date: Tue, 24 May 2022 23:21:52 +0200
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X-Mailer: git-send-email 2.36.1
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In-Reply-To: <20220524212155.16944-1-bage@debian.org>
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References: <20220524212155.16944-1-bage@debian.org>
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MIME-Version: 1.0
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Precedence: bulk
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List-ID: <netdev.vger.kernel.org>
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X-Mailing-List: netdev@vger.kernel.org
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X-Patchwork-Delegate: kuba@kernel.org
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From: Vasily Khoruzhick <anarsoul@gmail.com>
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Some adapters (e.g. RTL8723CS) advertise that they have more than
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2 pages for local ext features, but they don't support any features
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declared in these pages. RTL8723CS reports max_page = 2 and declares
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support for sync train and secure connection, but it responds with
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either garbage or with error in status on corresponding commands.
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Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
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[rebase on current tree]
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Signed-off-by: Bastian Germann <bage@debian.org>
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---
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include/net/bluetooth/hci.h | 7 +++++++
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net/bluetooth/hci_event.c | 4 +++-
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2 files changed, 10 insertions(+), 1 deletion(-)
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diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
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index 69ef31cea582..af26e8051905 100644
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--- a/include/net/bluetooth/hci.h
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+++ b/include/net/bluetooth/hci.h
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@@ -265,6 +265,13 @@ enum {
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* during the hdev->setup vendor callback.
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*/
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HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG,
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+
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+ /* When this quirk is set, max_page for local extended features
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+ * is set to 1, even if controller reports higher number. Some
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+ * controllers (e.g. RTL8822BS, RTL8723CS) report more pages,
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+ * but they don't actually support features declared there.
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+ */
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+ HCI_QUIRK_BROKEN_LOCAL_EXT_FTR_MAX_PAGE,
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};
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/* HCI device flags */
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diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
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index 66451661283c..52b358c33344 100644
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--- a/net/bluetooth/hci_event.c
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+++ b/net/bluetooth/hci_event.c
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@@ -837,7 +837,9 @@ static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data,
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if (rp->status)
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return rp->status;
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- if (hdev->max_page < rp->max_page)
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+ if (!test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FTR_MAX_PAGE,
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+ &hdev->quirks) &&
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+ hdev->max_page < rp->max_page)
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hdev->max_page = rp->max_page;
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if (rp->page < HCI_MAX_PAGES)
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