linux-kernel - [PATCH RESEND 1/2] Bluetooth: fix invalid-bdaddr quirk for non-persistent setup

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Message-Id: <20230531090424.3187-2-johan+linaro@kernel.org>
Date:   Wed, 31 May 2023 11:04:23 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>
Cc:     Matthias Kaehlcke <mka@...omium.org>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH RESEND 1/2] Bluetooth: fix invalid-bdaddr quirk for non-persistent setup

Devices that lack persistent storage for the device address can indicate
this by setting the HCI_QUIRK_INVALID_BDADDR which causes the controller
to be marked as unconfigured until user space has set a valid address.

Once configured, the device address must be set on every setup for
controllers with HCI_QUIRK_NON_PERSISTENT_SETUP to avoid marking the
controller as unconfigured and requiring the address to be set again.

Fixes: 740011cfe948 ("Bluetooth: Add new quirk for non-persistent setup settings")
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 net/bluetooth/hci_sync.c | 28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 0efc2253265e..c2a805ee55cc 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4618,23 +4618,17 @@ static int hci_dev_setup_sync(struct hci_dev *hdev)
 	invalid_bdaddr = test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
 
 	if (!ret) {
-		if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) {
-			if (!bacmp(&hdev->public_addr, BDADDR_ANY))
-				hci_dev_get_bd_addr_from_property(hdev);
-
-			if (bacmp(&hdev->public_addr, BDADDR_ANY) &&
-			    hdev->set_bdaddr) {
-				ret = hdev->set_bdaddr(hdev,
-						       &hdev->public_addr);
-
-				/* If setting of the BD_ADDR from the device
-				 * property succeeds, then treat the address
-				 * as valid even if the invalid BD_ADDR
-				 * quirk indicates otherwise.
-				 */
-				if (!ret)
-					invalid_bdaddr = false;
-			}
+		if (test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks) &&
+		    !bacmp(&hdev->public_addr, BDADDR_ANY))
+			hci_dev_get_bd_addr_from_property(hdev);
+
+		if ((invalid_bdaddr ||
+		     test_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks)) &&
+		    bacmp(&hdev->public_addr, BDADDR_ANY) &&
+		    hdev->set_bdaddr) {
+			ret = hdev->set_bdaddr(hdev, &hdev->public_addr);
+			if (!ret)
+				invalid_bdaddr = false;
 		}
 	}
 
-- 
2.39.3