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| author | Kenji Kaneshige | 2005-09-03 06:34:32 +0200 |
|---|---|---|
| committer | Len Brown | 2005-09-03 06:36:26 +0200 |
| commit | 5f0110f2a716376f3b260703835f527ca8900946 (patch) | |
| tree | eeb507e495f1710751afdc2da54eff6e243dcfe4 | |
| parent | [ACPI] add static to function definitions (diff) | |
| download | kernel-qcow2-linux-5f0110f2a716376f3b260703835f527ca8900946.tar.gz kernel-qcow2-linux-5f0110f2a716376f3b260703835f527ca8900946.tar.xz kernel-qcow2-linux-5f0110f2a716376f3b260703835f527ca8900946.zip | |
[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>
| -rw-r--r-- | drivers/acpi/pci_irq.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 2bbfba8e8c6d..09567c2edcfb 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -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. */ |