linux-kernel - [PATCH 5.7 260/393] Bluetooth: hci_qca: Stop collecting memdump again for command timeout during SSR

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Message-Id: <20200817143832.222977492@linuxfoundation.org>
Date:   Mon, 17 Aug 2020 17:15:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 260/393] Bluetooth: hci_qca: Stop collecting memdump again for command timeout during SSR

From: Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>

[ Upstream commit 58789a1990c1a849a461ac912e72a698a771951a ]

Setting memdump state to idle prior to setting of callback function
pointer for command timeout to NULL,causing the issue.Now moved the
initialisation of memdump state to qca_setup().

Fixes: d841502c79e3 ("Bluetooth: hci_qca: Collect controller memory dump during SSR")
Signed-off-by: Venkata Lakshmi Narayana Gubba <gubbaven@...eaurora.org>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/bluetooth/hci_qca.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 9869ae0f7b71e..6a3c80e1b19cd 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1633,6 +1633,8 @@ static int qca_setup(struct hci_uart *hu)
 	bt_dev_info(hdev, "setting up %s",
 		qca_is_wcn399x(soc_type) ? "wcn399x" : "ROME");
 
+	qca->memdump_state = QCA_MEMDUMP_IDLE;
+
 retry:
 	ret = qca_power_on(hdev);
 	if (ret)
@@ -1776,9 +1778,6 @@ static void qca_power_shutdown(struct hci_uart *hu)
 	qca_flush(hu);
 	spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
 
-	hu->hdev->hw_error = NULL;
-	hu->hdev->cmd_timeout = NULL;
-
 	/* Non-serdev device usually is powered by external power
 	 * and don't need additional action in driver for power down
 	 */
@@ -1800,6 +1799,9 @@ static int qca_power_off(struct hci_dev *hdev)
 	struct qca_data *qca = hu->priv;
 	enum qca_btsoc_type soc_type = qca_soc_type(hu);
 
+	hu->hdev->hw_error = NULL;
+	hu->hdev->cmd_timeout = NULL;
+
 	/* Stop sending shutdown command if soc crashes. */
 	if (qca_is_wcn399x(soc_type)
 		&& qca->memdump_state == QCA_MEMDUMP_IDLE) {
@@ -1807,7 +1809,6 @@ static int qca_power_off(struct hci_dev *hdev)
 		usleep_range(8000, 10000);
 	}
 
-	qca->memdump_state = QCA_MEMDUMP_IDLE;
 	qca_power_shutdown(hu);
 	return 0;
 }
-- 
2.25.1