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

// 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__

	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,