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>

37 files changed, 43 insertions, 43 deletions

diff --git a/hw/display/apple-gfx-mmio.m b/hw/display/apple-gfx-mmio.m
index b2e0e7a30f..b0b6e2993e 100644
--- a/hw/display/apple-gfx-mmio.m
+++ b/hw/display/apple-gfx-mmio.m
@@ -261,7 +261,7 @@ static const Property apple_gfx_mmio_properties[] = {
                       qdev_prop_apple_gfx_display_mode, AppleGFXDisplayMode),
 };
 
-static void apple_gfx_mmio_class_init(ObjectClass *klass, void *data)
+static void apple_gfx_mmio_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     ResettableClass *rc = RESETTABLE_CLASS(klass);
diff --git a/hw/display/apple-gfx-pci.m b/hw/display/apple-gfx-pci.m
index b939bb9b23..2f0d24f7fe 100644
--- a/hw/display/apple-gfx-pci.m
+++ b/hw/display/apple-gfx-pci.m
@@ -121,7 +121,7 @@ static const Property apple_gfx_pci_properties[] = {
                       qdev_prop_apple_gfx_display_mode, AppleGFXDisplayMode),
 };
 
-static void apple_gfx_pci_class_init(ObjectClass *klass, void *data)
+static void apple_gfx_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *pci = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/artist.c b/hw/display/artist.c
index f24c1d83dd..3fafc8a222 100644
--- a/hw/display/artist.c
+++ b/hw/display/artist.c
@@ -1487,7 +1487,7 @@ static void artist_reset(DeviceState *qdev)
 {
 }
 
-static void artist_class_init(ObjectClass *klass, void *data)
+static void artist_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/ati.c b/hw/display/ati.c
index 864fa4fc2c..4e88d09943 100644
--- a/hw/display/ati.c
+++ b/hw/display/ati.c
@@ -1049,7 +1049,7 @@ static const Property ati_vga_properties[] = {
     DEFINE_PROP_UINT8("x-pixman", ATIVGAState, use_pixman, DEFAULT_X_PIXMAN),
 };
 
-static void ati_vga_class_init(ObjectClass *klass, void *data)
+static void ati_vga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/bcm2835_fb.c b/hw/display/bcm2835_fb.c
index a5bded5156..820e67ac8b 100644
--- a/hw/display/bcm2835_fb.c
+++ b/hw/display/bcm2835_fb.c
@@ -442,7 +442,7 @@ static const Property bcm2835_fb_props[] = {
                        initial_config.alpha, 2), /* alpha ignored */
 };
 
-static void bcm2835_fb_class_init(ObjectClass *klass, void *data)
+static void bcm2835_fb_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/bochs-display.c b/hw/display/bochs-display.c
index 086f7a0f06..1d329fc9cc 100644
--- a/hw/display/bochs-display.c
+++ b/hw/display/bochs-display.c
@@ -351,7 +351,7 @@ static const Property bochs_display_properties[] = {
     DEFINE_EDID_PROPERTIES(BochsDisplayState, edid_info),
 };
 
-static void bochs_display_class_init(ObjectClass *klass, void *data)
+static void bochs_display_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/cg3.c b/hw/display/cg3.c
index 3f971d875f..daeef15217 100644
--- a/hw/display/cg3.c
+++ b/hw/display/cg3.c
@@ -368,7 +368,7 @@ static const Property cg3_properties[] = {
     DEFINE_PROP_UINT16("depth",        CG3State, depth,     -1),
 };
 
-static void cg3_class_init(ObjectClass *klass, void *data)
+static void cg3_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c
index 76124d3656..4e5ae04af0 100644
--- a/hw/display/cirrus_vga.c
+++ b/hw/display/cirrus_vga.c
@@ -2991,7 +2991,7 @@ static const Property pci_vga_cirrus_properties[] = {
                      cirrus_vga.vga.global_vmstate, false),
 };
 
-static void cirrus_vga_class_init(ObjectClass *klass, void *data)
+static void cirrus_vga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/cirrus_vga_isa.c b/hw/display/cirrus_vga_isa.c
index 60b7fd20f1..4b55c48eff 100644
--- a/hw/display/cirrus_vga_isa.c
+++ b/hw/display/cirrus_vga_isa.c
@@ -76,7 +76,7 @@ static const Property isa_cirrus_vga_properties[] = {
                      cirrus_vga.enable_blitter, true),
 };
 
-static void isa_cirrus_vga_class_init(ObjectClass *klass, void *data)
+static void isa_cirrus_vga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/dm163.c b/hw/display/dm163.c
index f6f0ec0c63..f8340d8275 100644
--- a/hw/display/dm163.c
+++ b/hw/display/dm163.c
@@ -325,7 +325,7 @@ static void dm163_realize(DeviceState *dev, Error **errp)
                         RGB_MATRIX_NUM_ROWS * LED_SQUARE_SIZE);
 }
 
-static void dm163_class_init(ObjectClass *klass, void *data)
+static void dm163_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     ResettableClass *rc = RESETTABLE_CLASS(klass);
diff --git a/hw/display/dpcd.c b/hw/display/dpcd.c
index 108faf7887..a157dc64e7 100644
--- a/hw/display/dpcd.c
+++ b/hw/display/dpcd.c
@@ -141,7 +141,7 @@ static const VMStateDescription vmstate_dpcd = {
     }
 };
 
-static void dpcd_class_init(ObjectClass *oc, void *data)
+static void dpcd_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
diff --git a/hw/display/exynos4210_fimd.c b/hw/display/exynos4210_fimd.c
index 04c864a308..c61e0280a7 100644
--- a/hw/display/exynos4210_fimd.c
+++ b/hw/display/exynos4210_fimd.c
@@ -1958,7 +1958,7 @@ static void exynos4210_fimd_realize(DeviceState *dev, Error **errp)
     s->console = graphic_console_init(dev, 0, &exynos4210_fimd_ops, s);
 }
 
-static void exynos4210_fimd_class_init(ObjectClass *klass, void *data)
+static void exynos4210_fimd_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/g364fb.c b/hw/display/g364fb.c
index 30b5ea67f2..a6ddc21d3e 100644
--- a/hw/display/g364fb.c
+++ b/hw/display/g364fb.c
@@ -526,7 +526,7 @@ static const VMStateDescription vmstate_g364fb_sysbus = {
     }
 };
 
-static void g364fb_sysbus_class_init(ObjectClass *klass, void *data)
+static void g364fb_sysbus_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/i2c-ddc.c b/hw/display/i2c-ddc.c
index d8ab9eee40..2adfc1a147 100644
--- a/hw/display/i2c-ddc.c
+++ b/hw/display/i2c-ddc.c
@@ -99,7 +99,7 @@ static const Property i2c_ddc_properties[] = {
     DEFINE_EDID_PROPERTIES(I2CDDCState, edid_info),
 };
 
-static void i2c_ddc_class_init(ObjectClass *oc, void *data)
+static void i2c_ddc_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     I2CSlaveClass *isc = I2C_SLAVE_CLASS(oc);
diff --git a/hw/display/jazz_led.c b/hw/display/jazz_led.c
index 1448488d06..90e82b58be 100644
--- a/hw/display/jazz_led.c
+++ b/hw/display/jazz_led.c
@@ -294,7 +294,7 @@ static void jazz_led_reset(DeviceState *d)
     qemu_console_resize(s->con, 60, 80);
 }
 
-static void jazz_led_class_init(ObjectClass *klass, void *data)
+static void jazz_led_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index b08eb06cbd..574d667173 100644
--- a/hw/display/macfb.c
+++ b/hw/display/macfb.c
@@ -793,7 +793,7 @@ static const VMStateDescription vmstate_macfb_nubus = {
     }
 };
 
-static void macfb_sysbus_class_init(ObjectClass *klass, void *data)
+static void macfb_sysbus_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -804,7 +804,7 @@ static void macfb_sysbus_class_init(ObjectClass *klass, void *data)
     device_class_set_props(dc, macfb_sysbus_properties);
 }
 
-static void macfb_nubus_class_init(ObjectClass *klass, void *data)
+static void macfb_nubus_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     MacfbNubusDeviceClass *ndc = NUBUS_MACFB_CLASS(klass);
diff --git a/hw/display/next-fb.c b/hw/display/next-fb.c
index 8446ff3c00..ec81b766a7 100644
--- a/hw/display/next-fb.c
+++ b/hw/display/next-fb.c
@@ -119,7 +119,7 @@ static void nextfb_realize(DeviceState *dev, Error **errp)
     qemu_console_resize(s->con, s->cols, s->rows);
 }
 
-static void nextfb_class_init(ObjectClass *oc, void *data)
+static void nextfb_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
diff --git a/hw/display/pl110.c b/hw/display/pl110.c
index 4d4f477b94..09c3c59e0e 100644
--- a/hw/display/pl110.c
+++ b/hw/display/pl110.c
@@ -580,7 +580,7 @@ static void pl111_init(Object *obj)
     s->version = VERSION_PL111;
 }
 
-static void pl110_class_init(ObjectClass *klass, void *data)
+static void pl110_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index da14da5209..6c820bcdb5 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -2498,7 +2498,7 @@ static const Property qxl_properties[] = {
         DEFINE_PROP_BOOL("global-vmstate", PCIQXLDevice, vga.global_vmstate, false),
 };
 
-static void qxl_pci_class_init(ObjectClass *klass, void *data)
+static void qxl_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -2523,7 +2523,7 @@ static const TypeInfo qxl_pci_type_info = {
     },
 };
 
-static void qxl_primary_class_init(ObjectClass *klass, void *data)
+static void qxl_primary_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -2543,7 +2543,7 @@ static const TypeInfo qxl_primary_info = {
 module_obj("qxl-vga");
 module_kconfig(QXL);
 
-static void qxl_secondary_class_init(ObjectClass *klass, void *data)
+static void qxl_secondary_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/ramfb-standalone.c b/hw/display/ramfb-standalone.c
index 1be106b57f..08f2d5db4e 100644
--- a/hw/display/ramfb-standalone.c
+++ b/hw/display/ramfb-standalone.c
@@ -64,7 +64,7 @@ static const Property ramfb_properties[] = {
     DEFINE_PROP_BOOL("x-migrate", RAMFBStandaloneState, migrate,  true),
 };
 
-static void ramfb_class_initfn(ObjectClass *klass, void *data)
+static void ramfb_class_initfn(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/sii9022.c b/hw/display/sii9022.c
index 16f8cb487c..d00d3e9fc5 100644
--- a/hw/display/sii9022.c
+++ b/hw/display/sii9022.c
@@ -167,7 +167,7 @@ static void sii9022_realize(DeviceState *dev, Error **errp)
     i2c_slave_create_simple(bus, TYPE_I2CDDC, 0x50);
 }
 
-static void sii9022_class_init(ObjectClass *klass, void *data)
+static void sii9022_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index 09edcf86f8..dcff1e978e 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -2077,7 +2077,7 @@ static const VMStateDescription vmstate_sm501_sysbus = {
      }
 };
 
-static void sm501_sysbus_class_init(ObjectClass *klass, void *data)
+static void sm501_sysbus_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -2167,7 +2167,7 @@ static const VMStateDescription vmstate_sm501_pci = {
      }
 };
 
-static void sm501_pci_class_init(ObjectClass *klass, void *data)
+static void sm501_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/ssd0303.c b/hw/display/ssd0303.c
index e292cff44e..87781438cd 100644
--- a/hw/display/ssd0303.c
+++ b/hw/display/ssd0303.c
@@ -311,7 +311,7 @@ static void ssd0303_realize(DeviceState *dev, Error **errp)
     qemu_console_resize(s->con, 96 * MAGNIFY, 16 * MAGNIFY);
 }
 
-static void ssd0303_class_init(ObjectClass *klass, void *data)
+static void ssd0303_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
diff --git a/hw/display/ssd0323.c b/hw/display/ssd0323.c
index 96cf0dc662..af5ff4fecd 100644
--- a/hw/display/ssd0323.c
+++ b/hw/display/ssd0323.c
@@ -361,7 +361,7 @@ static void ssd0323_realize(SSIPeripheral *d, Error **errp)
     qdev_init_gpio_in(dev, ssd0323_cd, 1);
 }
 
-static void ssd0323_class_init(ObjectClass *klass, void *data)
+static void ssd0323_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index 5968d33e48..4853c5e142 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -885,7 +885,7 @@ static const Property tcx_properties[] = {
     DEFINE_PROP_UINT16("depth",    TCXState, depth,     -1),
 };
 
-static void tcx_class_init(ObjectClass *klass, void *data)
+static void tcx_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c
index 2920628f78..3618913b3b 100644
--- a/hw/display/vga-isa.c
+++ b/hw/display/vga-isa.c
@@ -92,7 +92,7 @@ static const Property vga_isa_properties[] = {
     DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
 };
 
-static void vga_isa_class_initfn(ObjectClass *klass, void *data)
+static void vga_isa_class_initfn(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/vga-mmio.c b/hw/display/vga-mmio.c
index 1e0c2dbf74..33263856b7 100644
--- a/hw/display/vga-mmio.c
+++ b/hw/display/vga-mmio.c
@@ -116,7 +116,7 @@ static const Property vga_mmio_properties[] = {
     DEFINE_PROP_UINT32("vgamem_mb", VGAMmioState, vga.vram_size_mb, 8),
 };
 
-static void vga_mmio_class_initfn(ObjectClass *klass, void *data)
+static void vga_mmio_class_initfn(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c
index dd084c20b1..a860197274 100644
--- a/hw/display/vga-pci.c
+++ b/hw/display/vga-pci.c
@@ -350,7 +350,7 @@ static const Property secondary_pci_properties[] = {
     DEFINE_EDID_PROPERTIES(PCIVGAState, edid_info),
 };
 
-static void vga_pci_class_init(ObjectClass *klass, void *data)
+static void vga_pci_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -376,7 +376,7 @@ static const TypeInfo vga_pci_type_info = {
     },
 };
 
-static void vga_class_init(ObjectClass *klass, void *data)
+static void vga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -392,7 +392,7 @@ static void vga_class_init(ObjectClass *klass, void *data)
                                    vga_get_big_endian_fb, vga_set_big_endian_fb);
 }
 
-static void secondary_class_init(ObjectClass *klass, void *data)
+static void secondary_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
index 2aed6243f6..06c4e7e190 100644
--- a/hw/display/vhost-user-gpu.c
+++ b/hw/display/vhost-user-gpu.c
@@ -658,7 +658,7 @@ static const Property vhost_user_gpu_properties[] = {
 };
 
 static void
-vhost_user_gpu_class_init(ObjectClass *klass, void *data)
+vhost_user_gpu_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/display/virtio-gpu-base.c b/hw/display/virtio-gpu-base.c
index 321a6f4998..9eb806b71f 100644
--- a/hw/display/virtio-gpu-base.c
+++ b/hw/display/virtio-gpu-base.c
@@ -262,7 +262,7 @@ virtio_gpu_base_device_unrealize(DeviceState *qdev)
 }
 
 static void
-virtio_gpu_base_class_init(ObjectClass *klass, void *data)
+virtio_gpu_base_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
index 683fad3bf8..c06a078fb3 100644
--- a/hw/display/virtio-gpu-gl.c
+++ b/hw/display/virtio-gpu-gl.c
@@ -182,7 +182,7 @@ static void virtio_gpu_gl_device_unrealize(DeviceState *qdev)
     g_array_unref(g->capset_ids);
 }
 
-static void virtio_gpu_gl_class_init(ObjectClass *klass, void *data)
+static void virtio_gpu_gl_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/display/virtio-gpu-pci.c b/hw/display/virtio-gpu-pci.c
index 6d789701a3..c0d71b6254 100644
--- a/hw/display/virtio-gpu-pci.c
+++ b/hw/display/virtio-gpu-pci.c
@@ -57,7 +57,7 @@ static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     }
 }
 
-static void virtio_gpu_pci_base_class_init(ObjectClass *klass, void *data)
+static void virtio_gpu_pci_base_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/display/virtio-gpu-rutabaga.c b/hw/display/virtio-gpu-rutabaga.c
index f6eb29472e..ed5ae52acb 100644
--- a/hw/display/virtio-gpu-rutabaga.c
+++ b/hw/display/virtio-gpu-rutabaga.c
@@ -1110,7 +1110,7 @@ static const Property virtio_gpu_rutabaga_properties[] = {
     DEFINE_PROP_STRING("wsi", VirtIOGPURutabaga, wsi),
 };
 
-static void virtio_gpu_rutabaga_class_init(ObjectClass *klass, void *data)
+static void virtio_gpu_rutabaga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 11a7a85750..0a1a625b0e 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -1684,7 +1684,7 @@ static const Property virtio_gpu_properties[] = {
     DEFINE_PROP_UINT8("x-scanout-vmstate-version", VirtIOGPU, scanout_vmstate_version, 2),
 };
 
-static void virtio_gpu_class_init(ObjectClass *klass, void *data)
+static void virtio_gpu_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index fefbdb61e1..40e60f70fc 100644
--- a/hw/display/virtio-vga.c
+++ b/hw/display/virtio-vga.c
@@ -213,7 +213,7 @@ static const Property virtio_vga_base_properties[] = {
     DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
 };
 
-static void virtio_vga_base_class_init(ObjectClass *klass, void *data)
+static void virtio_vga_base_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c
index 2dd661e3c1..7777deb17d 100644
--- a/hw/display/vmware_vga.c
+++ b/hw/display/vmware_vga.c
@@ -1339,7 +1339,7 @@ static const Property vga_vmware_properties[] = {
                      chip.vga.global_vmstate, false),
 };
 
-static void vmsvga_class_init(ObjectClass *klass, void *data)
+static void vmsvga_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
diff --git a/hw/display/xlnx_dp.c b/hw/display/xlnx_dp.c
index 1272da0133..7c980ee642 100644
--- a/hw/display/xlnx_dp.c
+++ b/hw/display/xlnx_dp.c
@@ -1391,7 +1391,7 @@ static const Property xlnx_dp_device_properties[] = {
     DEFINE_AUDIO_PROPERTIES(XlnxDPState, aud_card),
 };
 
-static void xlnx_dp_class_init(ObjectClass *oc, void *data)
+static void xlnx_dp_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);