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-rw-r--r--hw/timer/a9gtimer.c2
-rw-r--r--hw/timer/allwinner-a10-pit.c2
-rw-r--r--hw/timer/arm_mptimer.c2
-rw-r--r--hw/timer/arm_timer.c2
-rw-r--r--hw/timer/armv7m_systick.c2
-rw-r--r--hw/timer/aspeed_timer.c12
-rw-r--r--hw/timer/avr_timer16.c2
-rw-r--r--hw/timer/bcm2835_systmr.c2
-rw-r--r--hw/timer/cadence_ttc.c2
-rw-r--r--hw/timer/cmsdk-apb-dualtimer.c2
-rw-r--r--hw/timer/cmsdk-apb-timer.c2
-rw-r--r--hw/timer/digic-timer.c2
-rw-r--r--hw/timer/exynos4210_mct.c2
-rw-r--r--hw/timer/exynos4210_pwm.c2
-rw-r--r--hw/timer/grlib_gptimer.c2
-rw-r--r--hw/timer/hpet.c2
-rw-r--r--hw/timer/i8254.c2
-rw-r--r--hw/timer/i8254_common.c2
-rw-r--r--hw/timer/ibex_timer.c2
-rw-r--r--hw/timer/imx_epit.c2
-rw-r--r--hw/timer/imx_gpt.c2
-rw-r--r--hw/timer/mss-timer.c2
-rw-r--r--hw/timer/npcm7xx_timer.c2
-rw-r--r--hw/timer/nrf51_timer.c2
-rw-r--r--hw/timer/pxa2xx_timer.c4
-rw-r--r--hw/timer/renesas_cmt.c2
-rw-r--r--hw/timer/renesas_tmr.c2
-rw-r--r--hw/timer/sifive_pwm.c2
-rw-r--r--hw/timer/slavio_timer.c2
-rw-r--r--hw/timer/sse-counter.c2
-rw-r--r--hw/timer/sse-timer.c2
-rw-r--r--hw/timer/stellaris-gptm.c2
-rw-r--r--hw/timer/stm32f2xx_timer.c2
-rw-r--r--hw/timer/xilinx_timer.c2
34 files changed, 40 insertions, 40 deletions
diff --git a/hw/timer/a9gtimer.c b/hw/timer/a9gtimer.c
index 9835c35483..690140f5a6 100644
--- a/hw/timer/a9gtimer.c
+++ b/hw/timer/a9gtimer.c
@@ -377,7 +377,7 @@ static const Property a9_gtimer_properties[] = {
     DEFINE_PROP_UINT32("num-cpu", A9GTimerState, num_cpu, 0),
 };
 
-static void a9_gtimer_class_init(ObjectClass *klass, void *data)
+static void a9_gtimer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/allwinner-a10-pit.c b/hw/timer/allwinner-a10-pit.c
index da3d7173ef..e4c353273a 100644
--- a/hw/timer/allwinner-a10-pit.c
+++ b/hw/timer/allwinner-a10-pit.c
@@ -288,7 +288,7 @@ static void a10_pit_finalize(Object *obj)
     }
 }
 
-static void a10_pit_class_init(ObjectClass *klass, void *data)
+static void a10_pit_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/arm_mptimer.c b/hw/timer/arm_mptimer.c
index 803dad1e8a..7cc5915e9e 100644
--- a/hw/timer/arm_mptimer.c
+++ b/hw/timer/arm_mptimer.c
@@ -304,7 +304,7 @@ static const Property arm_mptimer_properties[] = {
     DEFINE_PROP_UINT32("num-cpu", ARMMPTimerState, num_cpu, 0),
 };
 
-static void arm_mptimer_class_init(ObjectClass *klass, void *data)
+static void arm_mptimer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/arm_timer.c b/hw/timer/arm_timer.c
index 1213b77aa0..56638ff5cd 100644
--- a/hw/timer/arm_timer.c
+++ b/hw/timer/arm_timer.c
@@ -392,7 +392,7 @@ static const Property sp804_properties[] = {
     DEFINE_PROP_UINT32("freq1", SP804State, freq1, 1000000),
 };
 
-static void sp804_class_init(ObjectClass *klass, void *data)
+static void sp804_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *k = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/armv7m_systick.c b/hw/timer/armv7m_systick.c
index a07febd1d1..7e4ddcd405 100644
--- a/hw/timer/armv7m_systick.c
+++ b/hw/timer/armv7m_systick.c
@@ -285,7 +285,7 @@ static const VMStateDescription vmstate_systick = {
     }
 };
 
-static void systick_class_init(ObjectClass *klass, void *data)
+static void systick_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/aspeed_timer.c b/hw/timer/aspeed_timer.c
index ecda49574e..57db03512f 100644
--- a/hw/timer/aspeed_timer.c
+++ b/hw/timer/aspeed_timer.c
@@ -895,7 +895,7 @@ static const Property aspeed_timer_properties[] = {
                      AspeedSCUState *),
 };
 
-static void timer_class_init(ObjectClass *klass, void *data)
+static void timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -915,7 +915,7 @@ static const TypeInfo aspeed_timer_info = {
     .abstract   = true,
 };
 
-static void aspeed_2400_timer_class_init(ObjectClass *klass, void *data)
+static void aspeed_2400_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     AspeedTimerClass *awc = ASPEED_TIMER_CLASS(klass);
@@ -931,7 +931,7 @@ static const TypeInfo aspeed_2400_timer_info = {
     .class_init = aspeed_2400_timer_class_init,
 };
 
-static void aspeed_2500_timer_class_init(ObjectClass *klass, void *data)
+static void aspeed_2500_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     AspeedTimerClass *awc = ASPEED_TIMER_CLASS(klass);
@@ -947,7 +947,7 @@ static const TypeInfo aspeed_2500_timer_info = {
     .class_init = aspeed_2500_timer_class_init,
 };
 
-static void aspeed_2600_timer_class_init(ObjectClass *klass, void *data)
+static void aspeed_2600_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     AspeedTimerClass *awc = ASPEED_TIMER_CLASS(klass);
@@ -963,7 +963,7 @@ static const TypeInfo aspeed_2600_timer_info = {
     .class_init = aspeed_2600_timer_class_init,
 };
 
-static void aspeed_1030_timer_class_init(ObjectClass *klass, void *data)
+static void aspeed_1030_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     AspeedTimerClass *awc = ASPEED_TIMER_CLASS(klass);
@@ -979,7 +979,7 @@ static const TypeInfo aspeed_1030_timer_info = {
     .class_init = aspeed_1030_timer_class_init,
 };
 
-static void aspeed_2700_timer_class_init(ObjectClass *klass, void *data)
+static void aspeed_2700_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     AspeedTimerClass *awc = ASPEED_TIMER_CLASS(klass);
diff --git a/hw/timer/avr_timer16.c b/hw/timer/avr_timer16.c
index 96baf9cf60..012d829001 100644
--- a/hw/timer/avr_timer16.c
+++ b/hw/timer/avr_timer16.c
@@ -595,7 +595,7 @@ static void avr_timer16_realize(DeviceState *dev, Error **errp)
     s->enabled = true;
 }
 
-static void avr_timer16_class_init(ObjectClass *klass, void *data)
+static void avr_timer16_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/bcm2835_systmr.c b/hw/timer/bcm2835_systmr.c
index 2f0fee3342..7929aaa882 100644
--- a/hw/timer/bcm2835_systmr.c
+++ b/hw/timer/bcm2835_systmr.c
@@ -154,7 +154,7 @@ static const VMStateDescription bcm2835_systmr_vmstate = {
     }
 };
 
-static void bcm2835_systmr_class_init(ObjectClass *klass, void *data)
+static void bcm2835_systmr_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/cadence_ttc.c b/hw/timer/cadence_ttc.c
index 54dbd4c564..9c7ba16876 100644
--- a/hw/timer/cadence_ttc.c
+++ b/hw/timer/cadence_ttc.c
@@ -451,7 +451,7 @@ static const VMStateDescription vmstate_cadence_ttc = {
     }
 };
 
-static void cadence_ttc_class_init(ObjectClass *klass, void *data)
+static void cadence_ttc_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/cmsdk-apb-dualtimer.c b/hw/timer/cmsdk-apb-dualtimer.c
index 2ecd8dfe3c..34c550a3f9 100644
--- a/hw/timer/cmsdk-apb-dualtimer.c
+++ b/hw/timer/cmsdk-apb-dualtimer.c
@@ -534,7 +534,7 @@ static const VMStateDescription cmsdk_apb_dualtimer_vmstate = {
     }
 };
 
-static void cmsdk_apb_dualtimer_class_init(ObjectClass *klass, void *data)
+static void cmsdk_apb_dualtimer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/cmsdk-apb-timer.c b/hw/timer/cmsdk-apb-timer.c
index 16d0b2170e..4095267b4a 100644
--- a/hw/timer/cmsdk-apb-timer.c
+++ b/hw/timer/cmsdk-apb-timer.c
@@ -261,7 +261,7 @@ static const VMStateDescription cmsdk_apb_timer_vmstate = {
     }
 };
 
-static void cmsdk_apb_timer_class_init(ObjectClass *klass, void *data)
+static void cmsdk_apb_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/digic-timer.c b/hw/timer/digic-timer.c
index 00c32978d2..355138d354 100644
--- a/hw/timer/digic-timer.c
+++ b/hw/timer/digic-timer.c
@@ -161,7 +161,7 @@ static void digic_timer_finalize(Object *obj)
     ptimer_free(s->ptimer);
 }
 
-static void digic_timer_class_init(ObjectClass *klass, void *class_data)
+static void digic_timer_class_init(ObjectClass *klass, const void *class_data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/exynos4210_mct.c b/hw/timer/exynos4210_mct.c
index 5c6e139b20..bb0f9c8b9a 100644
--- a/hw/timer/exynos4210_mct.c
+++ b/hw/timer/exynos4210_mct.c
@@ -1546,7 +1546,7 @@ static void exynos4210_mct_finalize(Object *obj)
     }
 }
 
-static void exynos4210_mct_class_init(ObjectClass *klass, void *data)
+static void exynos4210_mct_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/exynos4210_pwm.c b/hw/timer/exynos4210_pwm.c
index 703d1d2b4a..69f737a8e6 100644
--- a/hw/timer/exynos4210_pwm.c
+++ b/hw/timer/exynos4210_pwm.c
@@ -420,7 +420,7 @@ static void exynos4210_pwm_finalize(Object *obj)
     }
 }
 
-static void exynos4210_pwm_class_init(ObjectClass *klass, void *data)
+static void exynos4210_pwm_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/grlib_gptimer.c b/hw/timer/grlib_gptimer.c
index f0802b6eb6..0e06fa09e9 100644
--- a/hw/timer/grlib_gptimer.c
+++ b/hw/timer/grlib_gptimer.c
@@ -409,7 +409,7 @@ static const Property grlib_gptimer_properties[] = {
     DEFINE_PROP_UINT32("nr-timers", GPTimerUnit, nr_timers, 2),
 };
 
-static void grlib_gptimer_class_init(ObjectClass *klass, void *data)
+static void grlib_gptimer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/hpet.c b/hw/timer/hpet.c
index ea82472105..d1b7bc52b7 100644
--- a/hw/timer/hpet.c
+++ b/hw/timer/hpet.c
@@ -736,7 +736,7 @@ static const Property hpet_device_properties[] = {
     DEFINE_PROP_BOOL("hpet-offset-saved", HPETState, hpet_offset_saved, true),
 };
 
-static void hpet_device_class_init(ObjectClass *klass, void *data)
+static void hpet_device_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/i8254.c b/hw/timer/i8254.c
index 058fc61ce9..4b25c487f7 100644
--- a/hw/timer/i8254.c
+++ b/hw/timer/i8254.c
@@ -350,7 +350,7 @@ static void pit_realizefn(DeviceState *dev, Error **errp)
     pc->parent_realize(dev, errp);
 }
 
-static void pit_class_initfn(ObjectClass *klass, void *data)
+static void pit_class_initfn(ObjectClass *klass, const void *data)
 {
     PITClass *pc = PIT_CLASS(klass);
     PITCommonClass *k = PIT_COMMON_CLASS(klass);
diff --git a/hw/timer/i8254_common.c b/hw/timer/i8254_common.c
index 29105afcc3..ad091594cd 100644
--- a/hw/timer/i8254_common.c
+++ b/hw/timer/i8254_common.c
@@ -242,7 +242,7 @@ static const Property pit_common_properties[] = {
     DEFINE_PROP_UINT32("iobase", PITCommonState, iobase,  -1),
 };
 
-static void pit_common_class_init(ObjectClass *klass, void *data)
+static void pit_common_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/ibex_timer.c b/hw/timer/ibex_timer.c
index 3ebc870097..c7320ef30f 100644
--- a/hw/timer/ibex_timer.c
+++ b/hw/timer/ibex_timer.c
@@ -286,7 +286,7 @@ static void ibex_timer_realize(DeviceState *dev, Error **errp)
 }
 
 
-static void ibex_timer_class_init(ObjectClass *klass, void *data)
+static void ibex_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/imx_epit.c b/hw/timer/imx_epit.c
index f40ab16697..6123321c35 100644
--- a/hw/timer/imx_epit.c
+++ b/hw/timer/imx_epit.c
@@ -427,7 +427,7 @@ static void imx_epit_dev_reset(DeviceState *dev)
     imx_epit_reset(s, true);
 }
 
-static void imx_epit_class_init(ObjectClass *klass, void *data)
+static void imx_epit_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc  = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/imx_gpt.c b/hw/timer/imx_gpt.c
index 200a89225b..8c7cbfdeac 100644
--- a/hw/timer/imx_gpt.c
+++ b/hw/timer/imx_gpt.c
@@ -518,7 +518,7 @@ static void imx_gpt_realize(DeviceState *dev, Error **errp)
     s->timer = ptimer_init(imx_gpt_timeout, s, PTIMER_POLICY_LEGACY);
 }
 
-static void imx_gpt_class_init(ObjectClass *klass, void *data)
+static void imx_gpt_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/mss-timer.c b/hw/timer/mss-timer.c
index 594da64eae..2ce821178b 100644
--- a/hw/timer/mss-timer.c
+++ b/hw/timer/mss-timer.c
@@ -285,7 +285,7 @@ static const Property mss_timer_properties[] = {
                       100 * 1000000),
 };
 
-static void mss_timer_class_init(ObjectClass *klass, void *data)
+static void mss_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/npcm7xx_timer.c b/hw/timer/npcm7xx_timer.c
index c55ba02235..6a116ad54b 100644
--- a/hw/timer/npcm7xx_timer.c
+++ b/hw/timer/npcm7xx_timer.c
@@ -689,7 +689,7 @@ static const VMStateDescription vmstate_npcm7xx_timer_ctrl = {
     },
 };
 
-static void npcm7xx_timer_class_init(ObjectClass *klass, void *data)
+static void npcm7xx_timer_class_init(ObjectClass *klass, const void *data)
 {
     ResettableClass *rc = RESETTABLE_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
diff --git a/hw/timer/nrf51_timer.c b/hw/timer/nrf51_timer.c
index 11ad8b575e..e228fdebc3 100644
--- a/hw/timer/nrf51_timer.c
+++ b/hw/timer/nrf51_timer.c
@@ -383,7 +383,7 @@ static const Property nrf51_timer_properties[] = {
     DEFINE_PROP_UINT8("id", NRF51TimerState, id, 0),
 };
 
-static void nrf51_timer_class_init(ObjectClass *klass, void *data)
+static void nrf51_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/pxa2xx_timer.c b/hw/timer/pxa2xx_timer.c
index 9e4dd0fd9f..7a94366b0f 100644
--- a/hw/timer/pxa2xx_timer.c
+++ b/hw/timer/pxa2xx_timer.c
@@ -555,7 +555,7 @@ static const Property pxa25x_timer_dev_properties[] = {
                     PXA2XX_TIMER_HAVE_TM4, false),
 };
 
-static void pxa25x_timer_dev_class_init(ObjectClass *klass, void *data)
+static void pxa25x_timer_dev_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
@@ -570,7 +570,7 @@ static const TypeInfo pxa25x_timer_dev_info = {
     .class_init    = pxa25x_timer_dev_class_init,
 };
 
-static void pxa2xx_timer_class_init(ObjectClass *oc, void *data)
+static void pxa2xx_timer_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
diff --git a/hw/timer/renesas_cmt.c b/hw/timer/renesas_cmt.c
index 93e7f58cc2..cdff7f47f1 100644
--- a/hw/timer/renesas_cmt.c
+++ b/hw/timer/renesas_cmt.c
@@ -257,7 +257,7 @@ static const Property rcmt_properties[] = {
     DEFINE_PROP_UINT64("input-freq", RCMTState, input_freq, 0),
 };
 
-static void rcmt_class_init(ObjectClass *klass, void *data)
+static void rcmt_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/renesas_tmr.c b/hw/timer/renesas_tmr.c
index 884349c2cc..95707f2b8c 100644
--- a/hw/timer/renesas_tmr.c
+++ b/hw/timer/renesas_tmr.c
@@ -467,7 +467,7 @@ static const Property rtmr_properties[] = {
     DEFINE_PROP_UINT64("input-freq", RTMRState, input_freq, 0),
 };
 
-static void rtmr_class_init(ObjectClass *klass, void *data)
+static void rtmr_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/sifive_pwm.c b/hw/timer/sifive_pwm.c
index fc796e9bc3..e85e389f7a 100644
--- a/hw/timer/sifive_pwm.c
+++ b/hw/timer/sifive_pwm.c
@@ -441,7 +441,7 @@ static void sifive_pwm_realize(DeviceState *dev, Error **errp)
                   sifive_pwm_interrupt_3, s);
 }
 
-static void sifive_pwm_class_init(ObjectClass *klass, void *data)
+static void sifive_pwm_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/slavio_timer.c b/hw/timer/slavio_timer.c
index 65b24e4f06..3e071fbdb4 100644
--- a/hw/timer/slavio_timer.c
+++ b/hw/timer/slavio_timer.c
@@ -424,7 +424,7 @@ static const Property slavio_timer_properties[] = {
     DEFINE_PROP_UINT32("num_cpus",  SLAVIO_TIMERState, num_cpus,  0),
 };
 
-static void slavio_timer_class_init(ObjectClass *klass, void *data)
+static void slavio_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/sse-counter.c b/hw/timer/sse-counter.c
index f17064abe3..31f77acf61 100644
--- a/hw/timer/sse-counter.c
+++ b/hw/timer/sse-counter.c
@@ -448,7 +448,7 @@ static const VMStateDescription sse_counter_vmstate = {
     }
 };
 
-static void sse_counter_class_init(ObjectClass *klass, void *data)
+static void sse_counter_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/sse-timer.c b/hw/timer/sse-timer.c
index e106739ea9..866d5eef8a 100644
--- a/hw/timer/sse-timer.c
+++ b/hw/timer/sse-timer.c
@@ -444,7 +444,7 @@ static const Property sse_timer_properties[] = {
     DEFINE_PROP_LINK("counter", SSETimer, counter, TYPE_SSE_COUNTER, SSECounter *),
 };
 
-static void sse_timer_class_init(ObjectClass *klass, void *data)
+static void sse_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/stellaris-gptm.c b/hw/timer/stellaris-gptm.c
index f28958cefc..d97b2f8309 100644
--- a/hw/timer/stellaris-gptm.c
+++ b/hw/timer/stellaris-gptm.c
@@ -308,7 +308,7 @@ static void stellaris_gptm_realize(DeviceState *dev, Error **errp)
     s->timer[1] = timer_new_ns(QEMU_CLOCK_VIRTUAL, gptm_tick, &s->opaque[1]);
 }
 
-static void stellaris_gptm_class_init(ObjectClass *klass, void *data)
+static void stellaris_gptm_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/stm32f2xx_timer.c b/hw/timer/stm32f2xx_timer.c
index 4707190d6a..be844e7f5a 100644
--- a/hw/timer/stm32f2xx_timer.c
+++ b/hw/timer/stm32f2xx_timer.c
@@ -320,7 +320,7 @@ static void stm32f2xx_timer_realize(DeviceState *dev, Error **errp)
     s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, stm32f2xx_timer_interrupt, s);
 }
 
-static void stm32f2xx_timer_class_init(ObjectClass *klass, void *data)
+static void stm32f2xx_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
diff --git a/hw/timer/xilinx_timer.c b/hw/timer/xilinx_timer.c
index 4620528f98..ff4a224d08 100644
--- a/hw/timer/xilinx_timer.c
+++ b/hw/timer/xilinx_timer.c
@@ -268,7 +268,7 @@ static const Property xilinx_timer_properties[] = {
     DEFINE_PROP_UINT8("one-timer-only", XpsTimerState, one_timer_only, 0),
 };
 
-static void xilinx_timer_class_init(ObjectClass *klass, void *data)
+static void xilinx_timer_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);