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From: Zijun Hu <quic_zijuhu@quicinc.com>
To: <luiz.dentz@gmail.com>, <marcel@holtmann.org>, <jiangzp@google.com>
CC: <linux-bluetooth@vger.kernel.org>, <quic_zijuhu@quicinc.com>
Subject: [PATCH v1 0/3] Fix 2 tool btattach issues for QCA controllers
Date: Sat, 13 Apr 2024 00:26:24 +0800
Message-ID: <1712939188-25529-1-git-send-email-quic_zijuhu@quicinc.com>
In-Reply-To: <1710914907-30012-1-git-send-email-quic_zijuhu@quicinc.com>
References: <1710914907-30012-1-git-send-email-quic_zijuhu@quicinc.com>
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There are many QCA soc types defined by drivers/bluetooth/btqca.h
enum qca_btsoc_type {
        QCA_INVALID = -1,
        QCA_AR3002,
        QCA_ROME,
        QCA_WCN3988,
        QCA_WCN3990,
        QCA_WCN3998,
        QCA_WCN3991,
        QCA_QCA2066,
        QCA_QCA6390,
        QCA_WCN6750,
        QCA_WCN6855,
        QCA_WCN7850,
        QCA_MAX,
};
and every soc type stands for a kind of QCA BT controller, this patch
series are to solve below 2 tool btattach issues for QCA soc types:
1) tool btattach will cause kernel crash when used for QCA_ROME
2) tool btattach does not support any other soc type except QCA_ROME

For hci_uart derived from tool btattach, it is allocated by hci_ldisc
and is Non-serdev device, its @serdev is NULL and its soc type is
currenlty hard coded as QCA_ROME.

The 1st issue is caused by dereferencing nullptr hu->serdev, in order to
solve the 2nd issue, a new ioctl is introduced for user to specify soc
type by a new added tool btattach option.

Zijun Hu (3):
  Bluetooth: qca: Fix crash caused by tool btattach for QCA_ROME
  Bluetooth: hci_ldisc: Add a ioctl HCIUARTSETPROTODATA
  Bluetooth: qca: Fix wrong soc type returned for tool btattach

 drivers/bluetooth/btqca.h     |  1 +
 drivers/bluetooth/hci_ldisc.c | 10 ++++++++++
 drivers/bluetooth/hci_qca.c   | 10 ++++++++--
 drivers/bluetooth/hci_uart.h  |  3 +++
 4 files changed, 22 insertions(+), 2 deletions(-)

-- 
2.7.4