From bd660f4f111161f60392dd02424c3a3d2240dc2f Mon Sep 17 00:00:00 2001 From: shaoyunl Date: Tue, 1 Oct 2019 15:52:31 -0400 Subject: [PATCH] drm/amdgpu : enable msix for amdgpu driver 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index d1d5e7f9b9be..50771b2757dc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -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"); } -- 2.45.2