From: Linus Torvalds <torvalds@g5.osdl.org>
Date: Sat, 2 Jul 2005 17:35:33 +0000 (-0700)
Subject: If ACPI doesn't find an irq listed, don't accept 0 as a valid PCI irq.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=44f8e1a20cf3afe10a3744bd9317808a39a242bb;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

If ACPI doesn't find an irq listed, don't accept 0 as a valid PCI irq.

That zero just means that nothing else found any irq information either.
---

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 8dbf802ee7f..d1f42b97282 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -433,7 +433,7 @@ acpi_pci_irq_enable (
 		printk(KERN_WARNING PREFIX "PCI Interrupt %s[%c]: no GSI",
 			pci_name(dev), ('A' + pin));
 		/* Interrupt Line values above 0xF are forbidden */
-		if (dev->irq >= 0 && (dev->irq <= 0xF)) {
+		if (dev->irq > 0 && (dev->irq <= 0xF)) {
 			printk(" - using IRQ %d\n", dev->irq);
 			acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
 			return_VALUE(0);