[PATCH] ACPI, PCI, IRQ: debug aids for 4.6

[Sinan Kaya]

Change-Id: I9c6170034ec30f04372315de3076f610f7e87668
---
 drivers/acpi/pci_link.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index ededa90..0bd51f0 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -541,6 +541,10 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 	else
 		irq = link->irq.possible[link->irq.possible_count - 1];
 
+	pr_info("irq : %d\n", irq);
+	pr_info("acpi_irq_balance : %d\n", acpi_irq_balance);
+	pr_info("link->irq.active : %d\n", link->irq.active);
+	pr_info("acpi_gbl_FADT.sci_interrupt : %d\n", acpi_gbl_FADT.sci_interrupt);
 	if (acpi_irq_balance || !link->irq.active) {
 		/*
 		 * Select the best IRQ.  This is done in reverse to promote
@@ -548,10 +552,21 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 		 */
 		for (i = (link->irq.possible_count - 1); i >= 0; i--) {
 			if (acpi_irq_penalty[irq] >
-			    acpi_irq_penalty[link->irq.possible[i]])
+			    acpi_irq_penalty[link->irq.possible[i]]) {
+				pr_info("acpi_irq_get_penalty(%d) : 0x%x\n", link->irq.possible[i], acpi_irq_penalty[link->irq.possible[i]]);
+				pr_info("acpi_irq_get_penalty(%d) : 0x%x\n", irq, acpi_irq_penalty[irq]);
 				irq = link->irq.possible[i];
+			}
 		}
 	}
+	for (i = (link->irq.possible_count - 1); i >= 0; i--) {
+		pr_info("penalty[%d] = 0x%x\n",
+				link->irq.possible[i],
+		    acpi_irq_penalty[link->irq.possible[i]]);
+	}
+	pr_info("irq : %d\n", irq);
+	pr_info("acpi_gbl_FADT.sci_interrupt : %d\n", acpi_gbl_FADT.sci_interrupt);
+
 	if (acpi_irq_penalty[irq] >= PIRQ_PENALTY_ISA_ALWAYS) {
 		printk(KERN_ERR PREFIX "No IRQ available for %s [%s]. "
 			    "Try pci=noacpi or acpi=off\n",
@@ -569,6 +584,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 		return -ENODEV;
 	} else {
 		acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
+		pr_info("acpi_irq_get_penalty(%d) : 0x%x\n", link->irq.active, acpi_irq_penalty[link->irq.active]);
 		printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
 		       acpi_device_name(link->device),
 		       acpi_device_bid(link->device), link->irq.active);
@@ -824,6 +840,9 @@ void acpi_penalize_isa_irq(int irq, int active)
 			acpi_irq_penalty[irq] += PIRQ_PENALTY_ISA_USED;
 		else
 			acpi_irq_penalty[irq] += PIRQ_PENALTY_PCI_USING;
+
+		pr_info("%s:%d acpi_isa_irq_penalty[%d]=0x%x active = %d\n", __func__,
+				__LINE__, irq,  acpi_irq_penalty[irq], active);
 	}
 }
 
-- 
1.9.1


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