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Based on 1 normalized pattern(s): the code contained herein is licensed under the gnu general public license you may obtain a copy of the gnu general public license version 2 or later at the following locations http www opensource org licenses gpl license html http www gnu org copyleft gpl html extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.383790741@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
24 lines
468 B
C
24 lines
468 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2012 Freescale Semiconductor, Inc.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/jiffies.h>
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#include <linux/spinlock.h>
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#include "clk.h"
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DEFINE_SPINLOCK(mxs_lock);
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int mxs_clk_wait(void __iomem *reg, u8 shift)
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{
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unsigned long timeout = jiffies + msecs_to_jiffies(10);
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while (readl_relaxed(reg) & (1 << shift))
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if (time_after(jiffies, timeout))
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return -ETIMEDOUT;
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return 0;
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}
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