On my GP107 when I load nouveau after unloading it, for some reason the
GPU stopped sending or the CPU stopped receiving interrupts if MSI was
enabled.
Doing a rearm once before getting any interrupts fixes this.
Signed-off-by: Karol Herbst <kher...@redhat.com>
---
drm/nouveau/nvkm/subdev/pci/base.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drm/nouveau/nvkm/subdev/pci/base.c
b/drm/nouveau/nvkm/subdev/pci/base.c
index b1b1f362..7ee1fbb4 100644
--- a/drm/nouveau/nvkm/subdev/pci/base.c
+++ b/drm/nouveau/nvkm/subdev/pci/base.c
@@ -136,6 +136,10 @@ nvkm_pci_init(struct nvkm_subdev *subdev)
return ret;
pci->irq = pdev->irq;
+ /* workaround: do a rearm once */
+ if (pci->msi)
+ pci->func->msi_rearm(pci);
+
return ret;
}
--
2.14.3
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