From feac90d756c03b03b83fabe83571bd88ecc96b78 Mon Sep 17 00:00:00 2001
From: Zijun Hu <zijuhu@codeaurora.org>
Date: Fri, 29 May 2020 04:31:07 +0800
Subject: [PATCH] Bluetooth: hci_qca: Fix suspend/resume functionality failure
Git-commit: feac90d756c03b03b83fabe83571bd88ecc96b78
Patch-mainline: v5.8-rc1
References: jsc#SLE-13430
@dev parameter of qca_suspend()/qca_resume() represents
serdev_device, but it is mistook for hci_dev and causes
succedent unexpected memory access.
Fix by taking @dev as serdev_device.
Fixes: 41d5b25fed0 ("Bluetooth: hci_qca: add PM support")
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/bluetooth/hci_qca.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index e4a68238fcb9..adcbe00a2275 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1977,8 +1977,9 @@ static void qca_serdev_remove(struct serdev_device *serdev)
static int __maybe_unused qca_suspend(struct device *dev)
{
- struct hci_dev *hdev = container_of(dev, struct hci_dev, dev);
- struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct serdev_device *serdev = to_serdev_device(dev);
+ struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev);
+ struct hci_uart *hu = &qcadev->serdev_hu;
struct qca_data *qca = hu->priv;
unsigned long flags;
int ret = 0;
@@ -2057,8 +2058,9 @@ static int __maybe_unused qca_suspend(struct device *dev)
static int __maybe_unused qca_resume(struct device *dev)
{
- struct hci_dev *hdev = container_of(dev, struct hci_dev, dev);
- struct hci_uart *hu = hci_get_drvdata(hdev);
+ struct serdev_device *serdev = to_serdev_device(dev);
+ struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev);
+ struct hci_uart *hu = &qcadev->serdev_hu;
struct qca_data *qca = hu->priv;
clear_bit(QCA_SUSPENDING, &qca->flags);
--
2.16.4