diff options
| -rw-r--r-- | drivers/lguest/lguest_device.c | 4 | ||||
| -rw-r--r-- | drivers/misc/mic/card/mic_virtio.c | 4 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_virtio.c | 4 | ||||
| -rw-r--r-- | drivers/s390/kvm/kvm_virtio.c | 4 | ||||
| -rw-r--r-- | drivers/s390/kvm/virtio_ccw.c | 6 | ||||
| -rw-r--r-- | drivers/virtio/virtio.c | 21 | ||||
| -rw-r--r-- | drivers/virtio/virtio_mmio.c | 4 | ||||
| -rw-r--r-- | drivers/virtio/virtio_pci.c | 4 | ||||
| -rw-r--r-- | include/linux/virtio_config.h | 3 |
9 files changed, 38 insertions, 16 deletions
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c index 9b77b6623ff8..89088d6538fd 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -126,7 +126,7 @@ static void status_notify(struct virtio_device *vdev) * sorted out, this routine is called so we can tell the Host which features we * understand and accept. */ -static void lg_finalize_features(struct virtio_device *vdev) +static int lg_finalize_features(struct virtio_device *vdev) { unsigned int i, bits; struct lguest_device_desc *desc = to_lgdev(vdev)->desc; @@ -153,6 +153,8 @@ static void lg_finalize_features(struct virtio_device *vdev) /* Tell Host we've finished with this device's feature negotiation */ status_notify(vdev); + + return 0; } /* Once they've found a field, getting a copy of it is easy. */ diff --git a/drivers/misc/mic/card/mic_virtio.c b/drivers/misc/mic/card/mic_virtio.c index d027d299602f..e486a0c26267 100644 --- a/drivers/misc/mic/card/mic_virtio.c +++ b/drivers/misc/mic/card/mic_virtio.c @@ -84,7 +84,7 @@ static u64 mic_get_features(struct virtio_device *vdev) return features; } -static void mic_finalize_features(struct virtio_device *vdev) +static int mic_finalize_features(struct virtio_device *vdev) { unsigned int i, bits; struct mic_device_desc __iomem *desc = to_micvdev(vdev)->desc; @@ -107,6 +107,8 @@ static void mic_finalize_features(struct virtio_device *vdev) iowrite8(ioread8(&out_features[i / 8]) | (1 << (i % 8)), &out_features[i / 8]); } + + return 0; } /* diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c index 627737ee7632..e1a10232a943 100644 --- a/drivers/remoteproc/remoteproc_virtio.c +++ b/drivers/remoteproc/remoteproc_virtio.c @@ -217,7 +217,7 @@ static u64 rproc_virtio_get_features(struct virtio_device *vdev) return rsc->dfeatures; } -static void rproc_virtio_finalize_features(struct virtio_device *vdev) +static int rproc_virtio_finalize_features(struct virtio_device *vdev) { struct rproc_vdev *rvdev = vdev_to_rvdev(vdev); struct fw_rsc_vdev *rsc; @@ -235,6 +235,8 @@ static void rproc_virtio_finalize_features(struct virtio_device *vdev) * to the remote processor once it is powered on. */ rsc->gfeatures = vdev->features; + + return 0; } static void rproc_virtio_get(struct virtio_device *vdev, unsigned offset, diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index f5575ccdbb65..dd65c8b4c7fe 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -93,7 +93,7 @@ static u64 kvm_get_features(struct virtio_device *vdev) return features; } -static void kvm_finalize_features(struct virtio_device *vdev) +static int kvm_finalize_features(struct virtio_device *vdev) { unsigned int i, bits; struct kvm_device_desc *desc = to_kvmdev(vdev)->desc; @@ -112,6 +112,8 @@ static void kvm_finalize_features(struct virtio_device *vdev) if (__virtio_test_bit(vdev, i)) out_features[i / 8] |= (1 << (i % 8)); } + + return 0; } /* diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index c792b5fe0bc9..789275fb577f 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -752,7 +752,7 @@ out_free: return rc; } -static void virtio_ccw_finalize_features(struct virtio_device *vdev) +static int virtio_ccw_finalize_features(struct virtio_device *vdev) { struct virtio_ccw_device *vcdev = to_vc_device(vdev); struct virtio_feature_desc *features; @@ -760,7 +760,7 @@ static void virtio_ccw_finalize_features(struct virtio_device *vdev) ccw = kzalloc(sizeof(*ccw), GFP_DMA | GFP_KERNEL); if (!ccw) - return; + return 0; features = kzalloc(sizeof(*features), GFP_DMA | GFP_KERNEL); if (!features) @@ -793,6 +793,8 @@ static void virtio_ccw_finalize_features(struct virtio_device *vdev) out_free: kfree(features); kfree(ccw); + + return 0; } static void virtio_ccw_get_config(struct virtio_device *vdev, diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 224f85442f3f..e1673a511d17 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -212,7 +212,9 @@ static int virtio_dev_probe(struct device *_d) if (device_features & (1ULL << i)) __virtio_set_bit(dev, i); - dev->config->finalize_features(dev); + err = dev->config->finalize_features(dev); + if (err) + goto err; if (virtio_has_feature(dev, VIRTIO_F_VERSION_1)) { add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); @@ -354,6 +356,7 @@ EXPORT_SYMBOL_GPL(virtio_device_freeze); int virtio_device_restore(struct virtio_device *dev) { struct virtio_driver *drv = drv_to_virtio(dev->dev.driver); + int ret; /* We always start by resetting the device, in case a previous * driver messed it up. */ @@ -373,14 +376,14 @@ int virtio_device_restore(struct virtio_device *dev) /* We have a driver! */ add_status(dev, VIRTIO_CONFIG_S_DRIVER); - dev->config->finalize_features(dev); + ret = dev->config->finalize_features(dev); + if (ret) + goto err; if (drv->restore) { - int ret = drv->restore(dev); - if (ret) { - add_status(dev, VIRTIO_CONFIG_S_FAILED); - return ret; - } + ret = drv->restore(dev); + if (ret) + goto err; } /* Finally, tell the device we're all set */ @@ -389,6 +392,10 @@ int virtio_device_restore(struct virtio_device *dev) virtio_config_enable(dev); return 0; + +err: + add_status(dev, VIRTIO_CONFIG_S_FAILED); + return ret; } EXPORT_SYMBOL_GPL(virtio_device_restore); #endif diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index aec1daee9ada..5219210d31ce 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -152,7 +152,7 @@ static u64 vm_get_features(struct virtio_device *vdev) return readl(vm_dev->base + VIRTIO_MMIO_HOST_FEATURES); } -static void vm_finalize_features(struct virtio_device *vdev) +static int vm_finalize_features(struct virtio_device *vdev) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); @@ -164,6 +164,8 @@ static void vm_finalize_features(struct virtio_device *vdev) writel(0, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES_SEL); writel(vdev->features, vm_dev->base + VIRTIO_MMIO_GUEST_FEATURES); + + return 0; } static void vm_get(struct virtio_device *vdev, unsigned offset, diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c index dd6df979862b..9be59d9f2f19 100644 --- a/drivers/virtio/virtio_pci.c +++ b/drivers/virtio/virtio_pci.c @@ -112,7 +112,7 @@ static u64 vp_get_features(struct virtio_device *vdev) } /* virtio config->finalize_features() implementation */ -static void vp_finalize_features(struct virtio_device *vdev) +static int vp_finalize_features(struct virtio_device *vdev) { struct virtio_pci_device *vp_dev = to_vp_device(vdev); @@ -124,6 +124,8 @@ static void vp_finalize_features(struct virtio_device *vdev) /* We only support 32 feature bits. */ iowrite32(vdev->features, vp_dev->ioaddr + VIRTIO_PCI_GUEST_FEATURES); + + return 0; } /* virtio config->get() implementation */ diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 1fa5faa26440..7979f850e7ac 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -47,6 +47,7 @@ * vdev: the virtio_device * This gives the final feature bits for the device: it can change * the dev->feature bits if it wants. + * Returns 0 on success or error status * @bus_name: return the bus name associated with the device * vdev: the virtio_device * This returns a pointer to the bus name a la pci_name from which @@ -68,7 +69,7 @@ struct virtio_config_ops { const char *names[]); void (*del_vqs)(struct virtio_device *); u64 (*get_features)(struct virtio_device *vdev); - void (*finalize_features)(struct virtio_device *vdev); + int (*finalize_features)(struct virtio_device *vdev); const char *(*bus_name)(struct virtio_device *vdev); int (*set_vq_affinity)(struct virtqueue *vq, int cpu); }; |