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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/pci/irq.c
..
..
@@ -6,60 +6,10 @@
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  * Copyright (C) 2017 Christoph Hellwig.
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  */
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-#include <linux/acpi.h>
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 #include <linux/device.h>
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 #include <linux/kernel.h>
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 #include <linux/export.h>
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 #include <linux/pci.h>
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-
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-static void pci_note_irq_problem(struct pci_dev *pdev, const char *reason)
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-{
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-	struct pci_dev *parent = to_pci_dev(pdev->dev.parent);
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-
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-	pci_err(pdev, "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n",
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-		dev_name(&parent->dev), parent->vendor, parent->device);
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-	pci_err(pdev, "%s\n", reason);
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-	pci_err(pdev, "Please report to linux-kernel@vger.kernel.org\n");
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-	WARN_ON(1);
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-}
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-
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-/**
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- * pci_lost_interrupt - reports a lost PCI interrupt
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- * @pdev:	device whose interrupt is lost
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- *
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- * The primary function of this routine is to report a lost interrupt
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- * in a standard way which users can recognise (instead of blaming the
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- * driver).
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- *
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- * Returns:
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- * a suggestion for fixing it (although the driver is not required to
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- * act on this).
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- */
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-enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *pdev)
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-{
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-	if (pdev->msi_enabled || pdev->msix_enabled) {
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-		enum pci_lost_interrupt_reason ret;
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-
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-		if (pdev->msix_enabled) {
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-			pci_note_irq_problem(pdev, "MSIX routing failure");
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-			ret = PCI_LOST_IRQ_DISABLE_MSIX;
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-		} else {
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-			pci_note_irq_problem(pdev, "MSI routing failure");
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-			ret = PCI_LOST_IRQ_DISABLE_MSI;
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-		}
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-		return ret;
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-	}
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-#ifdef CONFIG_ACPI
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-	if (!(acpi_disabled || acpi_noirq)) {
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-		pci_note_irq_problem(pdev, "Potential ACPI misrouting please reboot with acpi=noirq");
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-		/* currently no way to fix acpi on the fly */
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-		return PCI_LOST_IRQ_DISABLE_ACPI;
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-	}
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-#endif
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-	pci_note_irq_problem(pdev, "unknown cause (not MSI or ACPI)");
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-	return PCI_LOST_IRQ_NO_INFORMATION;
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-}
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-EXPORT_SYMBOL(pci_lost_interrupt);
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 /**
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  * pci_request_irq - allocate an interrupt line for a PCI device