From: Kenji Kaneshige <kaneshige.kenji-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
To: Len Brown <len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: [PATCH] fix possible null pointer reference in acpi_pci_irq_disable
Date: Wed, 30 Mar 2005 13:49:57 +0900 [thread overview]
Message-ID: <424A2FF5.5070603@jp.fujitsu.com> (raw)
Hi,
The following patch fixes possible null pointer reference in
acpi_pci_irq_disable().
Thanks,
Kenji Kaneshige
acpi_pci_irq_disable() should check if dev->bus is NULL before calling
pci_read_config_byte that refers it.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
---
linux-2.6.11-kanesige/drivers/acpi/pci_irq.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff -puN drivers/acpi/pci_irq.c~fix_acpi_pci_irq_disable2 drivers/acpi/pci_irq.c
--- linux-2.6.11/drivers/acpi/pci_irq.c~fix_acpi_pci_irq_disable2 2005-03-30 10:36:51.000000000 +0900
+++ linux-2.6.11-kanesige/drivers/acpi/pci_irq.c 2005-03-30 10:37:23.000000000 +0900
@@ -470,14 +470,14 @@ acpi_pci_irq_disable (
if (!dev)
return_VOID;
+ if (!dev->bus)
+ return_VOID;
+
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (!pin)
return_VOID;
pin--;
- if (!dev->bus)
- return_VOID;
-
/*
* First we check the PCI IRQ routing table (PRT) for an IRQ.
*/
_
-------------------------------------------------------
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reply other threads:[~2005-03-30 4:49 UTC|newest]
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