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OvmfPkg/VirtioPciDeviceDxe: supply missing BUS_MASTER attribute

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Virtio devices read and write guest RAM (they don't just decode their IO
and/or MMIO BARs), which translates to "bus master".

Suggested-by: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
[lersek@redhat.com: expand commit message body]
[lersek@redhat.com: fix up line breaking style (original code too)]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Brijesh Singh 2017-08-14 07:36:23 -04:00 committed by Laszlo Ersek
parent af0364f01e
commit 78ef454b8c
1 changed files with 7 additions and 3 deletions
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10
OvmfPkg/VirtioPciDeviceDxe/VirtioPciDevice.c
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@ -458,9 +458,13 @@ VirtioPciDeviceBindingStart (
goto ClosePciIo;
}
Status = Device->PciIo->Attributes (Device->PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_IO_ATTRIBUTE_IO, NULL);
Status = Device->PciIo->Attributes (
Device->PciIo,
EfiPciIoAttributeOperationEnable,
(EFI_PCI_IO_ATTRIBUTE_IO |
EFI_PCI_IO_ATTRIBUTE_BUS_MASTER),
NULL
);
if (EFI_ERROR (Status)) {
goto ClosePciIo;
}