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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Luiz Augusto von Dentz <luiz.von.dentz@intel.com>,
        Marcel Holtmann <marcel@holtmann.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.16 0256/1039] Bluetooth: MGMT: Use hci_dev_test_and_{set,clear}_flag
Date:   Mon, 24 Jan 2022 19:34:05 +0100
Message-Id: <20220124184133.921819876@linuxfoundation.org>
In-Reply-To: <20220124184125.121143506@linuxfoundation.org>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

[ Upstream commit 6f59f991b4e735323f099ac6490e725ae8c750a5 ]

This make use of hci_dev_test_and_{set,clear}_flag instead of doing 2
operations in a row.

Fixes: cbbdfa6f33198 ("Bluetooth: Enable controller RPA resolution using Experimental feature")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bluetooth/mgmt.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 44683443300ce..c068d05e9616f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3969,10 +3969,10 @@ static int set_zero_key_func(struct sock *sk, struct hci_dev *hdev,
 #endif
 
 	if (hdev && use_ll_privacy(hdev) && !hdev_is_powered(hdev)) {
-		bool changed = hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY);
-
-		hci_dev_clear_flag(hdev, HCI_ENABLE_LL_PRIVACY);
+		bool changed;
 
+		changed = hci_dev_test_and_clear_flag(hdev,
+						      HCI_ENABLE_LL_PRIVACY);
 		if (changed)
 			exp_ll_privacy_feature_changed(false, hdev, sk);
 	}
@@ -4067,15 +4067,15 @@ static int set_rpa_resolution_func(struct sock *sk, struct hci_dev *hdev,
 	val = !!cp->param[0];
 
 	if (val) {
-		changed = !hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY);
-		hci_dev_set_flag(hdev, HCI_ENABLE_LL_PRIVACY);
+		changed = !hci_dev_test_and_set_flag(hdev,
+						     HCI_ENABLE_LL_PRIVACY);
 		hci_dev_clear_flag(hdev, HCI_ADVERTISING);
 
 		/* Enable LL privacy + supported settings changed */
 		flags = BIT(0) | BIT(1);
 	} else {
-		changed = hci_dev_test_flag(hdev, HCI_ENABLE_LL_PRIVACY);
-		hci_dev_clear_flag(hdev, HCI_ENABLE_LL_PRIVACY);
+		changed = hci_dev_test_and_clear_flag(hdev,
+						      HCI_ENABLE_LL_PRIVACY);
 
 		/* Disable LL privacy + supported settings changed */
 		flags = BIT(1);
-- 
2.34.1