This reverts commit 8affb487d4a4e223d961d7034cb41cd31982b618.
Revert 8affb487d4a4 ("x86/PCI: Don't alloc pcibios-irq when MSI is
enabled").
This is part of reverting 991de2e59090 ("PCI, x86: Implement
pcibios_alloc_irq() and pcibios_free_irq()") to fix regressions it
introduced.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=111211
Fixes: 991de2e59090 ("PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()")
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael@xxxxxxxxxx>
CC: stable@xxxxxxxxxxxxxxx # v4.4
CC: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
CC: Joerg Roedel <jroedel@xxxxxxx>
---
arch/x86/pci/common.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index eccd4d9..dc78a4a 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -675,14 +675,6 @@ int pcibios_add_device(struct pci_dev *dev)
int pcibios_alloc_irq(struct pci_dev *dev)
{
- /*
- * If the PCI device was already claimed by core code and has
- * MSI enabled, probing of the pcibios IRQ will overwrite
- * dev->irq. So bail out if MSI is already enabled.
- */
- if (pci_dev_msi_enabled(dev))
- return -EBUSY;
-
return pcibios_enable_irq(dev);
}
--
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