Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=96c2a8766bf4fe91abac863749c11637fabcc64f
Commit: 96c2a8766bf4fe91abac863749c11637fabcc64f
Parent: fd0b45dfd1858c6b49d06355a460bcf36d654c06
Author: Alan Cox <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 10 22:49:58 2008 -0500
Committer: Len Brown <[EMAIL PROTECTED]>
CommitDate: Thu Jan 10 22:49:58 2008 -0500
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 <[EMAIL PROTECTED]>
Signed-off-by: Zhao Yakui <[EMAIL PROTECTED]>
Signed-off-by: Zhang Rui <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
drivers/acpi/pci_irq.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index dd3186a..62010c2 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)
&polarity, &link,
acpi_pci_allocate_irq);
+ if (irq < 0) {
+ /*
+ * IDE legacy mode controller IRQs are magic. Why do compat
+ * extensions always make such a nasty mess.
+ */
+ if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE &&
+ (dev->class & 0x05) == 0)
+ return 0;
+ }
/*
* No IRQ known to the ACPI subsystem - maybe the BIOS /
* driver reported one, then use it. Exit in any case.
-
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