Revert "AHCI: Do not acquire ata_host::lock from single IRQ handler" (03e83cbd) · Commits · 戴 / test

This reverts commit . ("AHCI: Optimize single IRQ interrupt processing") is scheduled to be reverted. This is an optimization dependent on the mentioned commit. Revert it first. Signed-off-by:

Tejun Heo <tj@kernel.org>

drivers/ata/libahci.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1875,6 +1875,8 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance)

		irq_masked = irq_stat & hpriv->port_map;

		spin_lock(&host->lock);

		for (i = 0; i < host->n_ports; i++) {
		struct ata_port *ap;

		@@ -1906,6 +1908,8 @@ static irqreturn_t ahci_single_irq_intr(int irq, void *dev_instance)
		*/
		writel(irq_stat, mmio + HOST_IRQ_STAT);

		spin_unlock(&host->lock);

		VPRINTK("EXIT\n");

		return handled ? IRQ_WAKE_THREAD : IRQ_NONE;

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