#include <linux/irq.h>
#include <linux/interrupt.h>

#include "internals.h"

void irq_move_masked_irq(struct irq_data *idata)
{
	struct irq_desc *desc = irq_data_to_desc(idata);
	struct irq_chip *chip = desc->irq_data.chip;

	if (likely(!irqd_is_setaffinity_pending(&desc->irq_data)))
		return;

	irqd_clr_move_pending(&desc->irq_data);

	/*
	 * Paranoia: cpu-local interrupts shouldn't be calling in here anyway.
	 */
	if (irqd_is_per_cpu(&desc->irq_data)) {
		WARN_ON(1);
		return;
	}

	if (unlikely(cpumask_empty(desc->pending_mask)))
		return;

	if (!chip->irq_set_affinity)
		return;

	assert_raw_spin_locked(&desc->lock);

	/*
	 * If there was a valid mask to work with, please
	 * do the disable, re-program, enable sequence.
	 * This is *not* particularly important for level triggered
	 * but in a edge trigger case, we might be setting rte
	 * when an active trigger is coming in. This could
	 * cause some ioapics to mal-function.
	 * Being paranoid i guess!
	 *
	 * For correct operation this depends on the caller
	 * masking the irqs.
	 */
	if (cpumask_any_and(desc->pending_mask, cpu_online_mask) < nr_cpu_ids)
		irq_do_set_affinity(&desc->irq_data, desc->pending_mask, false);

	cpumask_clear(desc->pending_mask);
}

void irq_move_irq(struct irq_data *idata)
{
	bool masked;

	/*
	 * Get top level irq_data when CONFIG_IRQ_DOMAIN_HIERARCHY is enabled,
	 * and it should be optimized away when CONFIG_IRQ_DOMAIN_HIERARCHY is
	 * disabled. So we avoid an "#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY" here.
	 */
	idata = irq_desc_get_irq_data(irq_data_to_desc(idata));

	if (likely(!irqd_is_setaffinity_pending(idata)))
		return;

	if (unlikely(irqd_irq_disabled(idata)))
		return;

	/*
	 * Be careful vs. already masked interrupts. If this is a
	 * threaded interrupt with ONESHOT set, we can end up with an
	 * interrupt storm.
	 */
	masked = irqd_irq_masked(idata);
	if (!masked)
		idata->chip->irq_mask(idata);
	irq_move_masked_irq(idata);
	if (!masked)
		idata->chip->irq_unmask(idata);
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=b1669c9f5ac9d50651889e22e4a82f1b34af32d3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=b1669c9f5ac9d50651889e22e4a82f1b34af32d3'>drivers</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=b1669c9f5ac9d50651889e22e4a82f1b34af32d3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2017-02-09 22:27:06 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=b1669c9f5ac9d50651889e22e4a82f1b34af32d3'>net/ena: use napi_complete_done() return value</a></td><td>Netanel Belgazal</td><td>1</td><td><span class='deletions'>-15</span>/<span class='insertions'>+29</span></td></tr>
<tr><td><span title='2017-02-09 22:27:06 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=3f6159dbfc24c5e61fb5deb9b69e0abb934609bb'>net/ena: fix potential access to freed memory during device reset</a></td><td>Netanel Belgazal</td><td>1</td><td><span class='deletions'>-13</span>/<span class='insertions'>+43</span></td></tr>
<tr><td><span title='2017-02-09 22:27:06 -0500'>2017-02-09</span></td><td><a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=d81db24056132fe8b83e2fba337e9ea76675e68d'>net/ena: refactor ena_get_stats64 to be atomic context safe</a></td><td>Netanel Belgazal