[ACPI] suspend/resume ACPI PCI Interrupt Links
Add reference count and disable ACPI PCI Interrupt Link
when no device still uses it.
Warn when drivers have not released Link at suspend time.
http://bugzilla.kernel.org/show_bug.cgi?id=3469
Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/arch/i386/pci/acpi.c b/arch/i386/pci/acpi.c
index 2db65ec..42913f4 100644
--- a/arch/i386/pci/acpi.c
+++ b/arch/i386/pci/acpi.c
@@ -30,6 +30,7 @@
acpi_irq_penalty_init();
pcibios_scanned++;
pcibios_enable_irq = acpi_pci_irq_enable;
+ pcibios_disable_irq = acpi_pci_irq_disable;
if (pci_routeirq) {
/*
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 720975e..751e49b 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -249,3 +249,9 @@
return pcibios_enable_irq(dev);
}
+
+void pcibios_disable_device (struct pci_dev *dev)
+{
+ if (pcibios_disable_irq)
+ pcibios_disable_irq(dev);
+}
diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c
index d21b3a2..66e4149 100644
--- a/arch/i386/pci/irq.c
+++ b/arch/i386/pci/irq.c
@@ -56,6 +56,7 @@
};
int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
+void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
/*
* Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
diff --git a/arch/i386/pci/pci.h b/arch/i386/pci/pci.h
index a8fc80c..dc442df 100644
--- a/arch/i386/pci/pci.h
+++ b/arch/i386/pci/pci.h
@@ -72,3 +72,4 @@
extern spinlock_t pci_config_lock;
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
+extern void (*pcibios_disable_irq)(struct pci_dev *dev);