Commit 5f0110f2 authored Sep 03, 2005 by Kenji Kaneshige Committed by Len Brown Sep 03, 2005

[ACPI] fix run-time error checking in acpi_pci_irq_disable()



The 'bus' field in pci_dev structure should be checked before calling
pci_read_config_byte() because pci_bus_read_config_byte() called by
pci_read_config_byte() refers to 'bus' field.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>

parent 8713cbef

drivers/acpi/pci_irq.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -500,7 +500,7 @@ void acpi_pci_irq_disable(struct pci_dev *dev)

		ACPI_FUNCTION_TRACE("acpi_pci_irq_disable");

		if (!dev)
		if (!dev \|\| !dev->bus)
		return_VOID;

		pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
		@@ -508,9 +508,6 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
		return_VOID;
		pin--;

		if (!dev->bus)
		return_VOID;

		/*
		* First we check the PCI IRQ routing table (PRT) for an IRQ.
		*/