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Fri, 19 Apr 2024 21:48:59 GMT Received: from zijuhu-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 19 Apr 2024 14:48:58 -0700 From: Zijun Hu To: , , CC: , , , , Subject: [PATCH v2 2/2] Bluetooth: qca: Fix BT enable failure for QCA_QCA6390 Date: Sat, 20 Apr 2024 05:48:47 +0800 Message-ID: <1713563327-19694-3-git-send-email-quic_zijuhu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1713563327-19694-1-git-send-email-quic_zijuhu@quicinc.com> References: <1713449192-25926-1-git-send-email-quic_zijuhu@quicinc.com> <1713563327-19694-1-git-send-email-quic_zijuhu@quicinc.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: Jg0BiRJfpf9hHcvbQH8yWnkvKNzsqozv X-Proofpoint-ORIG-GUID: Jg0BiRJfpf9hHcvbQH8yWnkvKNzsqozv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-19_15,2024-04-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 phishscore=0 mlxscore=0 adultscore=0 malwarescore=0 priorityscore=1501 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404190170 Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") will cause below serious regression issue: BT can't be enabled any more after below steps: cold boot -> enable BT -> disable BT -> BT enable failure if BT reset pin is not configured within DT|ACPI for QCA_QCA6390. The mentioned commit wrongly set quirk HCI_QUIRK_NON_PERSISTENT_SETUP within qca_serdev_probe() for this case and cause this serious issue. Fixed by reverting the mentioned commit for QCA_QCA6390. Fixes: 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL() with gpiod_get_optional()") Reported-by: Wren Turkal Link: https://bugzilla.kernel.org/show_bug.cgi?id=218726 Link: https://lore.kernel.org/linux-bluetooth/ea20bb9b-6b60-47fc-ae42-5eed918ad7b4@quicinc.com/T/#m73d6a71d2f454bb03588c66f3ef7912274d37c6f Signed-off-by: Zijun Hu Tested-by: Wren Turkal --- drivers/bluetooth/hci_qca.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c index 92fa20f5ac7d..0934e74112a6 100644 --- a/drivers/bluetooth/hci_qca.c +++ b/drivers/bluetooth/hci_qca.c @@ -2357,7 +2357,8 @@ static int qca_serdev_probe(struct serdev_device *serdev) if (IS_ERR(qcadev->bt_en)) { dev_warn(&serdev->dev, "failed to acquire enable gpio\n"); power_ctrl_enabled = false; - } + } else if (!qcadev->bt_en && qcadev->btsoc_type == QCA_QCA6390) + power_ctrl_enabled = false; qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL); if (IS_ERR(qcadev->susclk)) {