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Merge "soc: qcom: pmic_glink: Fix a race condition in accessing rx_list"

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This commit is contained in:
qctecmdr 2021-02-17 08:52:40 -08:00 • committed by Gerrit - the friendly Code Review server
commit d3f22253cf
1 changed files with 4 additions and 2 deletions
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6
drivers/soc/qcom/pmic_glink.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2019-2021, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "PMIC_GLINK: %s: " fmt, __func__
@ -474,15 +474,17 @@ static void pmic_glink_rx_work(struct work_struct *work)
struct pmic_glink_buf *pbuf, *tmp;
unsigned long flags;
spin_lock_irqsave(&pdev->rx_lock, flags);
if (!list_empty(&pdev->rx_list)) {
list_for_each_entry_safe(pbuf, tmp, &pdev->rx_list, node) {
spin_unlock_irqrestore(&pdev->rx_lock, flags);
pmic_glink_rx_callback(pdev, pbuf);
spin_lock_irqsave(&pdev->rx_lock, flags);
list_del(&pbuf->node);
spin_unlock_irqrestore(&pdev->rx_lock, flags);
kfree(pbuf);
}
}
spin_unlock_irqrestore(&pdev->rx_lock, flags);
}
static int pmic_glink_rpmsg_callback(struct rpmsg_device *rpdev, void *data,