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Commit 99b3c58f authored by Piotr Gregor's avatar Piotr Gregor Committed by Bjorn Helgaas
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PCI: Test INTx masking during enumeration, not at run-time



The test for INTx masking via PCI_COMMAND_INTX_DISABLE performed in
pci_intx_mask_supported() should be done before the device can be used.
This is to avoid writing PCI_COMMAND while the driver owns the device, in
case that has any effect on MSI/MSI-X interrupts.

Move the content of pci_intx_mask_supported() to pci_intx_mask_broken() and
call it from pci_setup_device().

The test result can be queried at any time later using the same
pci_intx_mask_supported() interface as before (though with changed
implementation), so callers (uio, vfio) should be unaffected.

Signed-off-by: default avatarPiotr Gregor <piotrgregor@rsyncme.org>
[bhelgaas: changelog, remove quirk check, remove locking, move
dev->broken_intx_masking assignment to caller]
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Acked-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 2ea659a9
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