qom: Have class_init() take a const data argument

Mechanical change using gsed, then style manually adapted
to pass checkpatch.pl script.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250424194905.82506-4-philmd@linaro.org>

50 files changed, 63 insertions, 58 deletions

diff --git a/hw/virtio/vdpa-dev-pci.c b/hw/virtio/vdpa-dev-pci.c
index 787926801a..3068112146 100644
--- a/hw/virtio/vdpa-dev-pci.c
+++ b/hw/virtio/vdpa-dev-pci.c
@@ -70,7 +70,8 @@ vhost_vdpa_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(DEVICE(&dev->vdev), BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_vdpa_device_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_vdpa_device_pci_class_init(ObjectClass *klass,
+                                             const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index a7e73b1c99..dd8837ce4e 100644
--- a/hw/virtio/vdpa-dev.c
+++ b/hw/virtio/vdpa-dev.c
@@ -353,7 +353,7 @@ static const VMStateDescription vmstate_vhost_vdpa_device = {
     },
 };
 
-static void vhost_vdpa_device_class_init(ObjectClass *klass, void *data)
+static void vhost_vdpa_device_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-scsi-pci.c b/hw/virtio/vhost-scsi-pci.c
index 3778f6131e..7399acef8e 100644
--- a/hw/virtio/vhost-scsi-pci.c
+++ b/hw/virtio/vhost-scsi-pci.c
@@ -61,7 +61,7 @@ static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_scsi_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-base.c b/hw/virtio/vhost-user-base.c
index 2bc3423326..77143320a2 100644
--- a/hw/virtio/vhost-user-base.c
+++ b/hw/virtio/vhost-user-base.c
@@ -348,7 +348,7 @@ static void vub_device_unrealize(DeviceState *dev)
     do_vhost_user_cleanup(vdev, vub);
 }
 
-static void vub_class_init(ObjectClass *klass, void *data)
+static void vub_class_init(ObjectClass *klass, const void *data)
 {
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 
diff --git a/hw/virtio/vhost-user-blk-pci.c b/hw/virtio/vhost-user-blk-pci.c
index 1767ef2c9c..904369f5a3 100644
--- a/hw/virtio/vhost-user-blk-pci.c
+++ b/hw/virtio/vhost-user-blk-pci.c
@@ -65,7 +65,7 @@ static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_blk_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_blk_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-device-pci.c b/hw/virtio/vhost-user-device-pci.c
index efaf55d3dd..f10bac874e 100644
--- a/hw/virtio/vhost-user-device-pci.c
+++ b/hw/virtio/vhost-user-device-pci.c
@@ -31,7 +31,8 @@ static void vhost_user_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_device_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_device_pci_class_init(ObjectClass *klass,
+                                             const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-device.c b/hw/virtio/vhost-user-device.c
index 86eba138b4..3939bdf755 100644
--- a/hw/virtio/vhost-user-device.c
+++ b/hw/virtio/vhost-user-device.c
@@ -37,7 +37,7 @@ static const Property vud_properties[] = {
     DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0),
 };
 
-static void vud_class_init(ObjectClass *klass, void *data)
+static void vud_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/virtio/vhost-user-fs-pci.c b/hw/virtio/vhost-user-fs-pci.c
index 116eaab907..1490c118bc 100644
--- a/hw/virtio/vhost-user-fs-pci.c
+++ b/hw/virtio/vhost-user-fs-pci.c
@@ -47,7 +47,7 @@ static void vhost_user_fs_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_fs_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_fs_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-fs.c b/hw/virtio/vhost-user-fs.c
index 0e8d4b3823..f6d1fc8804 100644
--- a/hw/virtio/vhost-user-fs.c
+++ b/hw/virtio/vhost-user-fs.c
@@ -418,7 +418,7 @@ static void vuf_instance_init(Object *obj)
                                   "/filesystem@0", DEVICE(obj));
 }
 
-static void vuf_class_init(ObjectClass *klass, void *data)
+static void vuf_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-gpio-pci.c b/hw/virtio/vhost-user-gpio-pci.c
index b3028a24a1..9b165b54f8 100644
--- a/hw/virtio/vhost-user-gpio-pci.c
+++ b/hw/virtio/vhost-user-gpio-pci.c
@@ -32,7 +32,7 @@ static void vhost_user_gpio_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_gpio_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_gpio_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-gpio.c b/hw/virtio/vhost-user-gpio.c
index 4a08814904..a7fd49b10a 100644
--- a/hw/virtio/vhost-user-gpio.c
+++ b/hw/virtio/vhost-user-gpio.c
@@ -36,7 +36,7 @@ static const VMStateDescription vu_gpio_vmstate = {
     .unmigratable = 1,
 };
 
-static void vu_gpio_class_init(ObjectClass *klass, void *data)
+static void vu_gpio_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-i2c-pci.c b/hw/virtio/vhost-user-i2c-pci.c
index 00ac10941f..692cd66fde 100644
--- a/hw/virtio/vhost-user-i2c-pci.c
+++ b/hw/virtio/vhost-user-i2c-pci.c
@@ -32,7 +32,7 @@ static void vhost_user_i2c_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_i2c_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_i2c_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-i2c.c b/hw/virtio/vhost-user-i2c.c
index 1c7cde503c..ae007fe97d 100644
--- a/hw/virtio/vhost-user-i2c.c
+++ b/hw/virtio/vhost-user-i2c.c
@@ -36,7 +36,7 @@ static const VMStateDescription vu_i2c_vmstate = {
     .unmigratable = 1,
 };
 
-static void vu_i2c_class_init(ObjectClass *klass, void *data)
+static void vu_i2c_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-input.c b/hw/virtio/vhost-user-input.c
index 917405329f..5cfc5bbb56 100644
--- a/hw/virtio/vhost-user-input.c
+++ b/hw/virtio/vhost-user-input.c
@@ -30,7 +30,7 @@ static const VMStateDescription vmstate_vhost_input = {
     .unmigratable = 1,
 };
 
-static void vhost_input_class_init(ObjectClass *klass, void *data)
+static void vhost_input_class_init(ObjectClass *klass, const void *data)
 {
     VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-rng-pci.c b/hw/virtio/vhost-user-rng-pci.c
index a4e690148d..9f45fc6f35 100644
--- a/hw/virtio/vhost-user-rng-pci.c
+++ b/hw/virtio/vhost-user-rng-pci.c
@@ -40,7 +40,7 @@ static void vhost_user_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_rng_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_rng_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-rng.c b/hw/virtio/vhost-user-rng.c
index 5aa432e5e1..61dadcda05 100644
--- a/hw/virtio/vhost-user-rng.c
+++ b/hw/virtio/vhost-user-rng.c
@@ -37,7 +37,7 @@ static void vu_rng_base_realize(DeviceState *dev, Error **errp)
     vubs->parent_realize(dev, errp);
 }
 
-static void vu_rng_class_init(ObjectClass *klass, void *data)
+static void vu_rng_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-scmi-pci.c b/hw/virtio/vhost-user-scmi-pci.c
index 7f53af7fce..0ab56a50bb 100644
--- a/hw/virtio/vhost-user-scmi-pci.c
+++ b/hw/virtio/vhost-user-scmi-pci.c
@@ -31,7 +31,7 @@ static void vhost_user_scmi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_scmi_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_scmi_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-scmi.c b/hw/virtio/vhost-user-scmi.c
index 04cd36dd2e..7a0f622181 100644
--- a/hw/virtio/vhost-user-scmi.c
+++ b/hw/virtio/vhost-user-scmi.c
@@ -279,7 +279,7 @@ static const Property vu_scmi_properties[] = {
     DEFINE_PROP_CHR("chardev", VHostUserSCMI, chardev),
 };
 
-static void vu_scmi_class_init(ObjectClass *klass, void *data)
+static void vu_scmi_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-scsi-pci.c b/hw/virtio/vhost-user-scsi-pci.c
index 4a4128d961..994e51a37b 100644
--- a/hw/virtio/vhost-user-scsi-pci.c
+++ b/hw/virtio/vhost-user-scsi-pci.c
@@ -67,7 +67,7 @@ static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_scsi_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_scsi_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-snd-pci.c b/hw/virtio/vhost-user-snd-pci.c
index 0cb86b7d85..f5015fb6c4 100644
--- a/hw/virtio/vhost-user-snd-pci.c
+++ b/hw/virtio/vhost-user-snd-pci.c
@@ -33,7 +33,7 @@ static void vhost_user_snd_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_snd_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_snd_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-snd.c b/hw/virtio/vhost-user-snd.c
index b414c75c06..732411c655 100644
--- a/hw/virtio/vhost-user-snd.c
+++ b/hw/virtio/vhost-user-snd.c
@@ -54,7 +54,7 @@ static void vu_snd_base_realize(DeviceState *dev, Error **errp)
     vubs->parent_realize(dev, errp);
 }
 
-static void vu_snd_class_init(ObjectClass *klass, void *data)
+static void vu_snd_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass);
diff --git a/hw/virtio/vhost-user-vsock-pci.c b/hw/virtio/vhost-user-vsock-pci.c
index f730a05e78..adb877b6e0 100644
--- a/hw/virtio/vhost-user-vsock-pci.c
+++ b/hw/virtio/vhost-user-vsock-pci.c
@@ -46,7 +46,8 @@ static void vhost_user_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_user_vsock_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_user_vsock_pci_class_init(ObjectClass *klass,
+                                            const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-user-vsock.c b/hw/virtio/vhost-user-vsock.c
index d21cd4b516..2776792f59 100644
--- a/hw/virtio/vhost-user-vsock.c
+++ b/hw/virtio/vhost-user-vsock.c
@@ -151,7 +151,7 @@ static const Property vuv_properties[] = {
     DEFINE_PROP_CHR("chardev", VHostUserVSock, conf.chardev),
 };
 
-static void vuv_class_init(ObjectClass *klass, void *data)
+static void vuv_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-vsock-common.c b/hw/virtio/vhost-vsock-common.c
index 9ac587d20c..4b4fbb45cc 100644
--- a/hw/virtio/vhost-vsock-common.c
+++ b/hw/virtio/vhost-vsock-common.c
@@ -290,7 +290,7 @@ static const Property vhost_vsock_common_properties[] = {
                             ON_OFF_AUTO_AUTO),
 };
 
-static void vhost_vsock_common_class_init(ObjectClass *klass, void *data)
+static void vhost_vsock_common_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/vhost-vsock-pci.c b/hw/virtio/vhost-vsock-pci.c
index 6c618ee908..0022a713d4 100644
--- a/hw/virtio/vhost-vsock-pci.c
+++ b/hw/virtio/vhost-vsock-pci.c
@@ -56,7 +56,7 @@ static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
+static void vhost_vsock_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/vhost-vsock.c b/hw/virtio/vhost-vsock.c
index 940b30fa27..b73dc723c2 100644
--- a/hw/virtio/vhost-vsock.c
+++ b/hw/virtio/vhost-vsock.c
@@ -210,7 +210,7 @@ static const Property vhost_vsock_properties[] = {
     DEFINE_PROP_STRING("vhostfd", VHostVSock, conf.vhostfd),
 };
 
-static void vhost_vsock_class_init(ObjectClass *klass, void *data)
+static void vhost_vsock_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-9p-pci.c b/hw/virtio/virtio-9p-pci.c
index aa1dce8f28..594742ff65 100644
--- a/hw/virtio/virtio-9p-pci.c
+++ b/hw/virtio/virtio-9p-pci.c
@@ -49,7 +49,7 @@ static const Property virtio_9p_pci_properties[] = {
     DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
 };
 
-static void virtio_9p_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_9p_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-balloon-pci.c b/hw/virtio/virtio-balloon-pci.c
index db7e1cb475..96e88b6b86 100644
--- a/hw/virtio/virtio-balloon-pci.c
+++ b/hw/virtio/virtio-balloon-pci.c
@@ -55,7 +55,7 @@ static void virtio_balloon_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_balloon_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
index 0d0603c674..91510ec2e2 100644
--- a/hw/virtio/virtio-balloon.c
+++ b/hw/virtio/virtio-balloon.c
@@ -1058,7 +1058,7 @@ static const Property virtio_balloon_properties[] = {
                      IOThread *),
 };
 
-static void virtio_balloon_class_init(ObjectClass *klass, void *data)
+static void virtio_balloon_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-blk-pci.c b/hw/virtio/virtio-blk-pci.c
index fc06cec656..fd33bbd7e8 100644
--- a/hw/virtio/virtio-blk-pci.c
+++ b/hw/virtio/virtio-blk-pci.c
@@ -63,7 +63,7 @@ static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_blk_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index d1c79c567b..11adfbf3ab 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -348,7 +348,7 @@ bool virtio_bus_device_iommu_enabled(VirtIODevice *vdev)
     return klass->iommu_enabled(qbus->parent);
 }
 
-static void virtio_bus_class_init(ObjectClass *klass, void *data)
+static void virtio_bus_class_init(ObjectClass *klass, const void *data)
 {
     BusClass *bus_class = BUS_CLASS(klass);
     bus_class->get_dev_path = virtio_bus_get_dev_path;
diff --git a/hw/virtio/virtio-crypto-pci.c b/hw/virtio/virtio-crypto-pci.c
index 8699481375..868abc03a9 100644
--- a/hw/virtio/virtio-crypto-pci.c
+++ b/hw/virtio/virtio-crypto-pci.c
@@ -59,7 +59,7 @@ static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     }
 }
 
-static void virtio_crypto_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_crypto_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
index a1b3c90618..e24d6914b6 100644
--- a/hw/virtio/virtio-crypto.c
+++ b/hw/virtio/virtio-crypto.c
@@ -1264,7 +1264,7 @@ static struct vhost_dev *virtio_crypto_get_vhost(VirtIODevice *vdev)
     return &vhost_crypto->dev;
 }
 
-static void virtio_crypto_class_init(ObjectClass *klass, void *data)
+static void virtio_crypto_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-input-pci.c b/hw/virtio/virtio-input-pci.c
index 9e3c106777..3be5358b4c 100644
--- a/hw/virtio/virtio-input-pci.c
+++ b/hw/virtio/virtio-input-pci.c
@@ -50,7 +50,7 @@ static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_input_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
@@ -63,7 +63,8 @@ static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
     pcidev_k->class_id = PCI_CLASS_INPUT_OTHER;
 }
 
-static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass,
+                                                const void *data)
 {
     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
 
@@ -71,7 +72,7 @@ static void virtio_input_hid_kbd_pci_class_init(ObjectClass *klass, void *data)
 }
 
 static void virtio_input_hid_mouse_pci_class_init(ObjectClass *klass,
-                                                  void *data)
+                                                  const void *data)
 {
     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
 
diff --git a/hw/virtio/virtio-iommu-pci.c b/hw/virtio/virtio-iommu-pci.c
index 97e03ce803..8123c6f83a 100644
--- a/hw/virtio/virtio-iommu-pci.c
+++ b/hw/virtio/virtio-iommu-pci.c
@@ -73,7 +73,7 @@ static void virtio_iommu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_iommu_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_iommu_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-iommu.c b/hw/virtio/virtio-iommu.c
index b6e7e01ef7..54060988ef 100644
--- a/hw/virtio/virtio-iommu.c
+++ b/hw/virtio/virtio-iommu.c
@@ -1664,7 +1664,7 @@ static const Property virtio_iommu_properties[] = {
     DEFINE_PROP_UINT8("aw-bits", VirtIOIOMMU, aw_bits, 64),
 };
 
-static void virtio_iommu_class_init(ObjectClass *klass, void *data)
+static void virtio_iommu_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
@@ -1690,7 +1690,7 @@ static void virtio_iommu_class_init(ObjectClass *klass, void *data)
 }
 
 static void virtio_iommu_memory_region_class_init(ObjectClass *klass,
-                                                  void *data)
+                                                  const void *data)
 {
     IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
 
diff --git a/hw/virtio/virtio-mem-pci.c b/hw/virtio/virtio-mem-pci.c
index 6cc5f0fd3b..f592eb1a78 100644
--- a/hw/virtio/virtio-mem-pci.c
+++ b/hw/virtio/virtio-mem-pci.c
@@ -163,7 +163,7 @@ static const Property virtio_mem_pci_class_properties[] = {
                        DEV_NVECTORS_UNSPECIFIED),
 };
 
-static void virtio_mem_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_mem_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
index c7968ee0c6..0e14dd37d6 100644
--- a/hw/virtio/virtio-mem.c
+++ b/hw/virtio/virtio-mem.c
@@ -1865,7 +1865,7 @@ static void virtio_mem_unplug_request_check(VirtIOMEM *vmem, Error **errp)
     }
 }
 
-static void virtio_mem_class_init(ObjectClass *klass, void *data)
+static void virtio_mem_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
@@ -1957,7 +1957,8 @@ static void virtio_mem_system_reset_hold(Object *obj, ResetType type)
     virtio_mem_unplug_all(vmem);
 }
 
-static void virtio_mem_system_reset_class_init(ObjectClass *klass, void *data)
+static void virtio_mem_system_reset_class_init(ObjectClass *klass,
+                                               const void *data)
 {
     ResettableClass *rc = RESETTABLE_CLASS(klass);
 
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 029817139b..532c67107b 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -784,7 +784,7 @@ static void virtio_mmio_realizefn(DeviceState *d, Error **errp)
     sysbus_init_mmio(sbd, &proxy->iomem);
 }
 
-static void virtio_mmio_class_init(ObjectClass *klass, void *data)
+static void virtio_mmio_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -855,7 +855,7 @@ static void virtio_mmio_vmstate_change(DeviceState *d, bool running)
     }
 }
 
-static void virtio_mmio_bus_class_init(ObjectClass *klass, void *data)
+static void virtio_mmio_bus_class_init(ObjectClass *klass, const void *data)
 {
     BusClass *bus_class = BUS_CLASS(klass);
     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
diff --git a/hw/virtio/virtio-net-pci.c b/hw/virtio/virtio-net-pci.c
index e18953ad67..8cf9788bc3 100644
--- a/hw/virtio/virtio-net-pci.c
+++ b/hw/virtio/virtio-net-pci.c
@@ -63,7 +63,7 @@ static void virtio_net_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_net_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_net_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-nsm-pci.c b/hw/virtio/virtio-nsm-pci.c
index dca797315a..ec243963e1 100644
--- a/hw/virtio/virtio-nsm-pci.c
+++ b/hw/virtio/virtio-nsm-pci.c
@@ -40,7 +40,7 @@ static void virtio_nsm_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     }
 }
 
-static void virtio_nsm_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_nsm_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-nsm.c b/hw/virtio/virtio-nsm.c
index accf7334e3..3bf5e7009a 100644
--- a/hw/virtio/virtio-nsm.c
+++ b/hw/virtio/virtio-nsm.c
@@ -1708,7 +1708,7 @@ static const Property virtio_nsm_properties[] = {
     DEFINE_PROP_STRING("module-id", VirtIONSM, module_id),
 };
 
-static void virtio_nsm_class_init(ObjectClass *klass, void *data)
+static void virtio_nsm_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 3ca3f849d3..c0fd3db063 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -2399,7 +2399,7 @@ static int virtio_pci_sync_config(DeviceState *dev, Error **errp)
     return qdev_sync_config(DEVICE(vdev), errp);
 }
 
-static void virtio_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -2433,7 +2433,7 @@ static const Property virtio_pci_generic_properties[] = {
     DEFINE_PROP_BOOL("disable-modern", VirtIOPCIProxy, disable_modern, false),
 };
 
-static void virtio_pci_base_class_init(ObjectClass *klass, void *data)
+static void virtio_pci_base_class_init(ObjectClass *klass, const void *data)
 {
     const VirtioPCIDeviceTypeInfo *t = data;
     if (t->class_init) {
@@ -2441,7 +2441,7 @@ static void virtio_pci_base_class_init(ObjectClass *klass, void *data)
     }
 }
 
-static void virtio_pci_generic_class_init(ObjectClass *klass, void *data)
+static void virtio_pci_generic_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -2586,7 +2586,7 @@ static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
     qbus_init(bus, bus_size, TYPE_VIRTIO_PCI_BUS, qdev, virtio_bus_name);
 }
 
-static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
+static void virtio_pci_bus_class_init(ObjectClass *klass, const void *data)
 {
     BusClass *bus_class = BUS_CLASS(klass);
     VirtioBusClass *k = VIRTIO_BUS_CLASS(klass);
diff --git a/hw/virtio/virtio-pmem-pci.c b/hw/virtio/virtio-pmem-pci.c
index cfe7f3b67c..babd91c21f 100644
--- a/hw/virtio/virtio-pmem-pci.c
+++ b/hw/virtio/virtio-pmem-pci.c
@@ -80,7 +80,7 @@ static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
     info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_PMEM;
 }
 
-static void virtio_pmem_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_pmem_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-pmem.c b/hw/virtio/virtio-pmem.c
index adb3268bd4..3416ea1827 100644
--- a/hw/virtio/virtio-pmem.c
+++ b/hw/virtio/virtio-pmem.c
@@ -161,7 +161,7 @@ static const Property virtio_pmem_properties[] = {
                      TYPE_MEMORY_BACKEND, HostMemoryBackend *),
 };
 
-static void virtio_pmem_class_init(ObjectClass *klass, void *data)
+static void virtio_pmem_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-rng-pci.c b/hw/virtio/virtio-rng-pci.c
index a94ff767b2..39b600356e 100644
--- a/hw/virtio/virtio-rng-pci.c
+++ b/hw/virtio/virtio-rng-pci.c
@@ -53,7 +53,7 @@ static void virtio_rng_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     }
 }
 
-static void virtio_rng_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_rng_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c
index a515fc5cd9..dcb3c71d6a 100644
--- a/hw/virtio/virtio-rng.c
+++ b/hw/virtio/virtio-rng.c
@@ -260,7 +260,7 @@ static const Property virtio_rng_properties[] = {
     DEFINE_PROP_LINK("rng", VirtIORNG, conf.rng, TYPE_RNG_BACKEND, RngBackend *),
 };
 
-static void virtio_rng_class_init(ObjectClass *klass, void *data)
+static void virtio_rng_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/virtio/virtio-scsi-pci.c b/hw/virtio/virtio-scsi-pci.c
index d44fd2fffb..af87759207 100644
--- a/hw/virtio/virtio-scsi-pci.c
+++ b/hw/virtio/virtio-scsi-pci.c
@@ -72,7 +72,7 @@ static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
-static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_scsi_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio-serial-pci.c b/hw/virtio/virtio-serial-pci.c
index b5b77eb266..3f212ffe52 100644
--- a/hw/virtio/virtio-serial-pci.c
+++ b/hw/virtio/virtio-serial-pci.c
@@ -76,7 +76,7 @@ static const Property virtio_serial_pci_properties[] = {
     DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
 };
 
-static void virtio_serial_pci_class_init(ObjectClass *klass, void *data)
+static void virtio_serial_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index ffc12635ae..f0fa36f8ce 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -4138,7 +4138,7 @@ void virtio_device_release_ioeventfd(VirtIODevice *vdev)
     virtio_bus_release_ioeventfd(vbus);
 }
 
-static void virtio_device_class_init(ObjectClass *klass, void *data)
+static void virtio_device_class_init(ObjectClass *klass, const void *data)
 {
     /* Set the default value here. */
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);