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From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH v2 1/4] Bluetooth: Only allow setting msft_opcode at setup stage
Date: Tue, 12 Oct 2021 17:30:52 -0700	[thread overview]
Message-ID: <20211013003055.2664728-1-luiz.dentz@gmail.com> (raw)

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

The msft_opcode shall only be changed while at the setup stage otherwise
it can possible cause problems where different opcodes are used while
running.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
v2: Fix typos: s/extention/extension/g

 include/net/bluetooth/hci_core.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index dd8840e70e25..eb5d4ea88c3a 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1272,11 +1272,15 @@ int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
 
-static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
+static inline int hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
 {
+	if (!hci_dev_test_flag(hdev, HCI_SETUP))
+		return -EPERM;
+
 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
 	hdev->msft_opcode = opcode;
 #endif
+	return 0;
 }
 
 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
-- 
2.31.1


             reply	other threads:[~2021-10-13  0:31 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-13  0:30 Luiz Augusto von Dentz [this message]
2021-10-13  0:30 ` [PATCH v2 2/4] Bluetooth: Only allow setting AOSP capable " Luiz Augusto von Dentz
2021-10-13  0:30 ` [PATCH v2 3/4] Bluetooth: vhci: Add support for setting msft_opcode Luiz Augusto von Dentz
2021-10-13  0:30 ` [PATCH v2 4/4] Bluetooth: vhci: Add support for setting aosp_capable Luiz Augusto von Dentz
2021-10-13  6:45   ` Marcel Holtmann
2021-10-13 21:29     ` Luiz Augusto von Dentz
2021-10-13  2:11 ` [v2,1/4] Bluetooth: Only allow setting msft_opcode at setup stage bluez.test.bot
2021-10-13  6:35 ` [PATCH v2 1/4] " Marcel Holtmann
2021-10-13 21:10   ` Luiz Augusto von Dentz

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