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[Qemu-devel] [PATCH 1/3] msi: Allow pre-existing MSI capabilities
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [PATCH 1/3] msi: Allow pre-existing MSI capabilities |
Date: |
Mon, 01 Nov 2010 23:37:32 -0600 |
User-agent: |
StGIT/0.14.3 |
For use with device assignment, allow calling msi_init() on devices
with MSI capability already configured.
Signed-off-by: Alex Williamson <address@hidden>
---
hw/msi.c | 12 +++++++++---
1 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/hw/msi.c b/hw/msi.c
index f03f519..0ad4e38 100644
--- a/hw/msi.c
+++ b/hw/msi.c
@@ -135,10 +135,16 @@ int msi_init(struct PCIDevice *dev, uint8_t offset,
flags |= PCI_MSI_FLAGS_MASKBIT;
}
+ config_offset = pci_find_capability(dev, PCI_CAP_ID_MSI);
+
cap_size = msi_cap_sizeof(flags);
- config_offset = pci_add_capability(dev, PCI_CAP_ID_MSI, offset, cap_size);
- if (config_offset < 0) {
- return config_offset;
+
+ if (!config_offset) {
+ config_offset = pci_add_capability(dev, PCI_CAP_ID_MSI,
+ offset, cap_size);
+ if (config_offset < 0) {
+ return config_offset;
+ }
}
dev->msi_cap = config_offset;
- [Qemu-devel] [PATCH 0/3] msi: Small fixes and enhancements, Alex Williamson, 2010/11/02
- [Qemu-devel] [PATCH 1/3] msi: Allow pre-existing MSI capabilities,
Alex Williamson <=
- [Qemu-devel] [PATCH 2/3] msi: Cleanup uninit, Alex Williamson, 2010/11/02
- [Qemu-devel] [PATCH 3/3] msi: Store the capability size in PCIDevice, Alex Williamson, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Michael S. Tsirkin, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Alex Williamson, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Michael S. Tsirkin, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Alex Williamson, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Michael S. Tsirkin, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Alex Williamson, 2010/11/02
- [Qemu-devel] Re: [PATCH 3/3] msi: Store the capability size in PCIDevice, Michael S. Tsirkin, 2010/11/02