swh:1:snp:49cd9498d6cccc5e78252c27dcb645bcf7bf0c91
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Tip revision: 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 authored by Linus Torvalds on 25 April 2021, 20:49:08 UTC
Linux 5.12
Tip revision: 9f4ad9e
clk.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 */

#include <linux/err.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/spinlock.h>
#include "clk.h"

DEFINE_SPINLOCK(mxs_lock);

int mxs_clk_wait(void __iomem *reg, u8 shift)
{
	unsigned long timeout = jiffies + msecs_to_jiffies(10);

	while (readl_relaxed(reg) & (1 << shift))
		if (time_after(jiffies, timeout))
			return -ETIMEDOUT;

	return 0;
}
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