From: Zijun Hu <zijuhu@codeaurora.org>
To: marcel@holtmann.org, johan.hedberg@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org,
linux-arm-msm@vger.kernel.org, bgodavar@codeaurora.org,
c-hbandi@codeaurora.org, hemantg@codeaurora.org,
mka@chromium.org, rjliao@codeaurora.org, zijuhu@codeaurora.org
Subject: [PATCH v1] bluetooth: hci_qca: Fix suspend/resume functionality failure
Date: Thu, 28 May 2020 18:38:22 +0800 [thread overview]
Message-ID: <1590662302-10102-1-git-send-email-zijuhu@codeaurora.org> (raw)
@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.
Signed-off-by: Zijun Hu <zijuhu@codeaurora.org>
---
drivers/bluetooth/hci_qca.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index e4a6823..c159161 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1977,8 +1977,10 @@ 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 hci_dev *hdev __maybe_unused = hu->hdev;
struct qca_data *qca = hu->priv;
unsigned long flags;
int ret = 0;
@@ -2057,8 +2059,10 @@ 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 hci_dev *hdev __maybe_unused = hu->hdev;
struct qca_data *qca = hu->priv;
clear_bit(QCA_SUSPENDING, &qca->flags);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next reply other threads:[~2020-05-28 10:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-28 10:38 Zijun Hu [this message]
2020-05-28 16:16 ` [PATCH v1] bluetooth: hci_qca: Fix suspend/resume functionality failure Matthias Kaehlcke
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