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drm/amdgpu : enable msix for amdgpu driver

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We might used out of the msi resources in some cloud project
which have a lot gpu devices(including PF and VF), msix can
provide enough resources from system level view

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl 2019-10-01 15:52:31 -04:00 committed by Alex Deucher
parent 452f9bdd9a
commit bd660f4f11
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
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@ -245,8 +245,9 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
adev->irq.msi_enabled = false;
if (amdgpu_msi_ok(adev)) {
int ret = pci_enable_msi(adev->pdev);
if (!ret) {
int nvec = pci_alloc_irq_vectors(adev->pdev, 1, pci_msix_vec_count(adev->pdev),
PCI_IRQ_MSI | PCI_IRQ_MSIX);
if (nvec > 0) {
adev->irq.msi_enabled = true;
dev_dbg(adev->dev, "amdgpu: using MSI.\n");
}