This addresses a couple of things found while testing the FLR and AER handling with the VFs. - release irqs before calling vp_modern_remove() - make sure we have a valid struct pointer before using it to release irqs - make sure the FW is alive before trying to add a new device
Signed-off-by: Shannon Nelson <[email protected]> --- drivers/vdpa/pds/aux_drv.c | 2 +- drivers/vdpa/pds/vdpa_dev.c | 20 +++++++++++++++++--- drivers/vdpa/pds/vdpa_dev.h | 1 + 3 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/vdpa/pds/aux_drv.c b/drivers/vdpa/pds/aux_drv.c index 186e9ee22eb1..f57330cf9024 100644 --- a/drivers/vdpa/pds/aux_drv.c +++ b/drivers/vdpa/pds/aux_drv.c @@ -93,8 +93,8 @@ static void pds_vdpa_remove(struct auxiliary_device *aux_dev) struct device *dev = &aux_dev->dev; vdpa_mgmtdev_unregister(&vdpa_aux->vdpa_mdev); + pds_vdpa_release_irqs(vdpa_aux->pdsv); vp_modern_remove(&vdpa_aux->vd_mdev); - pci_free_irq_vectors(vdpa_aux->padev->vf_pdev); pds_vdpa_debugfs_del_vdpadev(vdpa_aux); kfree(vdpa_aux); diff --git a/drivers/vdpa/pds/vdpa_dev.c b/drivers/vdpa/pds/vdpa_dev.c index 25c0fe5ec3d5..301d95e08596 100644 --- a/drivers/vdpa/pds/vdpa_dev.c +++ b/drivers/vdpa/pds/vdpa_dev.c @@ -426,12 +426,18 @@ static int pds_vdpa_request_irqs(struct pds_vdpa_device *pdsv) return err; } -static void pds_vdpa_release_irqs(struct pds_vdpa_device *pdsv) +void pds_vdpa_release_irqs(struct pds_vdpa_device *pdsv) { - struct pci_dev *pdev = pdsv->vdpa_aux->padev->vf_pdev; - struct pds_vdpa_aux *vdpa_aux = pdsv->vdpa_aux; + struct pds_vdpa_aux *vdpa_aux; + struct pci_dev *pdev; int qid; + if (!pdsv) + return; + + pdev = pdsv->vdpa_aux->padev->vf_pdev; + vdpa_aux = pdsv->vdpa_aux; + if (!vdpa_aux->nintrs) return; @@ -612,6 +618,7 @@ static int pds_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, struct device *dma_dev; struct pci_dev *pdev; struct device *dev; + u8 status; int err; int i; @@ -638,6 +645,13 @@ static int pds_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name, dma_dev = &pdev->dev; pdsv->vdpa_dev.dma_dev = dma_dev; + status = pds_vdpa_get_status(&pdsv->vdpa_dev); + if (status == 0xff) { + dev_err(dev, "Broken PCI - status %#x\n", status); + err = -ENXIO; + goto err_unmap; + } + pdsv->supported_features = mgmt->supported_features; if (add_config->mask & BIT_ULL(VDPA_ATTR_DEV_FEATURES)) { diff --git a/drivers/vdpa/pds/vdpa_dev.h b/drivers/vdpa/pds/vdpa_dev.h index d984ba24a7da..84bdb45871ff 100644 --- a/drivers/vdpa/pds/vdpa_dev.h +++ b/drivers/vdpa/pds/vdpa_dev.h @@ -46,5 +46,6 @@ struct pds_vdpa_device { #define PDS_VDPA_PACKED_INVERT_IDX 0x8000 +void pds_vdpa_release_irqs(struct pds_vdpa_device *pdsv); int pds_vdpa_get_mgmt_info(struct pds_vdpa_aux *vdpa_aux); #endif /* _VDPA_DEV_H_ */ -- 2.17.1
