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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-01-10 22:49:58 -0500
committerLen Brown <len.brown@intel.com>2008-01-10 22:49:58 -0500
commit96c2a8766bf4fe91abac863749c11637fabcc64f (patch)
treef51f14874826bf5e2051e565cf957328b0909f7c /drivers/acpi/pci_irq.c
parentfd0b45dfd1858c6b49d06355a460bcf36d654c06 (diff)
ACPI : Not register gsi for PCI IDE controller in legacy mode
When PCI IDE controller works in legacy mode and no PRT entry is found in ACPI PRT table, OSPM will neither read the irq number from the IDE PCI configuration space nor call the function of acpi_register_gsi to register gsi. http://bugzilla.kernel.org/show_bug.cgi?id=5637 Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/pci_irq.c')
-rw-r--r--drivers/acpi/pci_irq.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index dd3186abe07a..62010c2481b3 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -429,6 +429,15 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
429 &polarity, &link, 429 &polarity, &link,
430 acpi_pci_allocate_irq); 430 acpi_pci_allocate_irq);
431 431
432 if (irq < 0) {
433 /*
434 * IDE legacy mode controller IRQs are magic. Why do compat
435 * extensions always make such a nasty mess.
436 */
437 if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE &&
438 (dev->class & 0x05) == 0)
439 return 0;
440 }
432 /* 441 /*
433 * No IRQ known to the ACPI subsystem - maybe the BIOS / 442 * No IRQ known to the ACPI subsystem - maybe the BIOS /
434 * driver reported one, then use it. Exit in any case. 443 * driver reported one, then use it. Exit in any case.