From: Jason Wang jasowang@redhat.com
[ Upstream commit 2b9f28d5e8efad34f472542315911c5ee9a65b6c ]
We don't free config irq in ifcvf_free_irq() which will trigger a BUG() in pci core since we try to free the vectors that has an action. Fixing this by recording the config irq in ifcvf_hw structure and free it in ifcvf_free_irq().
Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan lingshan.zhu@intel.com Signed-off-by: Jason Wang jasowang@redhat.com Link: https://lore.kernel.org/r/20200723091254.20617-2-jasowang@redhat.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Reviewed-by: Zhu Lingshan lingshan.zhu@intel.com Fixes: e7991f376a4d ("ifcvf: implement config interrupt in IFCVF") Cc: Zhu Lingshan <a class="moz-txt-link-rfc2396E" href="mailto:lingshan.zhu@intel.com"><lingshan.zhu@intel.com></a> Signed-off-by: Jason Wang <a class="moz-txt-link-rfc2396E" href="mailto:jasowang@redhat.com"><jasowang@redhat.com></a> Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vdpa/ifcvf/ifcvf_base.h | 2 +- drivers/vdpa/ifcvf/ifcvf_main.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h index f4554412e607f..29efa75cdfce5 100644 --- a/drivers/vdpa/ifcvf/ifcvf_base.h +++ b/drivers/vdpa/ifcvf/ifcvf_base.h @@ -84,7 +84,7 @@ struct ifcvf_hw { void __iomem * const *base; char config_msix_name[256]; struct vdpa_callback config_cb; - + unsigned int config_irq; };
struct ifcvf_adapter { diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index ae7110955a44d..7a6d899e541df 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -53,6 +53,7 @@ static void ifcvf_free_irq(struct ifcvf_adapter *adapter, int queues) for (i = 0; i < queues; i++) devm_free_irq(&pdev->dev, vf->vring[i].irq, &vf->vring[i]);
+ devm_free_irq(&pdev->dev, vf->config_irq, vf); ifcvf_free_irq_vectors(pdev); }
@@ -72,8 +73,8 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter) snprintf(vf->config_msix_name, 256, "ifcvf[%s]-config\n", pci_name(pdev)); vector = 0; - irq = pci_irq_vector(pdev, vector); - ret = devm_request_irq(&pdev->dev, irq, + vf->config_irq = pci_irq_vector(pdev, vector); + ret = devm_request_irq(&pdev->dev, vf->config_irq, ifcvf_config_changed, 0, vf->config_msix_name, vf); if (ret) {