[PATCH 2/2] hw/rtc/mc146818rtc: Qdev'ify reset()

[Philippe Mathieu-Daudé]

TYPE_MC146818_RTC is an ISA device, so its DeviceClass::reset()
handler is called automatically when its qbus parent is reset.

We have 2 reset() methods: a generic one and the qdev one.
Merge them into the qdev reset handler, rename it, and remove
the qemu_register_reset() call.

Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
 hw/rtc/mc146818rtc.c | 35 +++++++++++++++--------------------
 1 file changed, 15 insertions(+), 20 deletions(-)

diff --git a/hw/rtc/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index 5d0fcacd0c0..710adeb9aaa 100644
--- a/hw/rtc/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -872,22 +872,6 @@ static void rtc_notify_suspend(Notifier *notifier, void 
*data)
     rtc_set_memory(ISA_DEVICE(s), 0xF, 0xFE);
 }
 
-static void rtc_reset(void *opaque)
-{
-    RTCState *s = opaque;
-
-    s->cmos_data[RTC_REG_B] &= ~(REG_B_PIE | REG_B_AIE | REG_B_SQWE);
-    s->cmos_data[RTC_REG_C] &= ~(REG_C_UF | REG_C_IRQF | REG_C_PF | REG_C_AF);
-    check_update_timer(s);
-
-    qemu_irq_lower(s->irq);
-
-    if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
-        s->irq_coalesced = 0;
-        s->irq_reinject_on_ack_count = 0;
-    }
-}
-
 static const MemoryRegionOps cmos_ops = {
     .read = cmos_ioport_read,
     .write = cmos_ioport_write,
@@ -962,7 +946,6 @@ static void rtc_realizefn(DeviceState *dev, Error **errp)
     memory_region_add_coalescing(&s->coalesced_io, 0, 1);
 
     qdev_set_legacy_instance_id(dev, RTC_ISA_BASE, 3);
-    qemu_register_reset(rtc_reset, s);
 
     object_property_add_tm(OBJECT(s), "date", rtc_get_date);
 
@@ -998,17 +981,29 @@ static Property mc146818rtc_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
-static void rtc_resetdev(DeviceState *d)
+static void rtc_reset(DeviceState *dev)
 {
-    RTCState *s = MC146818_RTC(d);
+    RTCState *s = MC146818_RTC(dev);
 
     /* Reason: VM do suspend self will set 0xfe
      * Reset any values other than 0xfe(Guest suspend case) */
     if (s->cmos_data[0x0f] != 0xfe) {
         s->cmos_data[0x0f] = 0x00;
     }
+
+    s->cmos_data[RTC_REG_B] &= ~(REG_B_PIE | REG_B_AIE | REG_B_SQWE);
+    s->cmos_data[RTC_REG_C] &= ~(REG_C_UF | REG_C_IRQF | REG_C_PF | REG_C_AF);
+    check_update_timer(s);
+
+    qemu_irq_lower(s->irq);
+
+    if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
+        s->irq_coalesced = 0;
+        s->irq_reinject_on_ack_count = 0;
+    }
 }
 
+
 static void rtc_build_aml(ISADevice *isadev, Aml *scope)
 {
     Aml *dev;
@@ -1036,7 +1031,7 @@ static void rtc_class_initfn(ObjectClass *klass, void 
*data)
     ISADeviceClass *isa = ISA_DEVICE_CLASS(klass);
 
     dc->realize = rtc_realizefn;
-    dc->reset = rtc_resetdev;
+    dc->reset = rtc_reset;
     dc->vmsd = &vmstate_rtc;
     isa->build_aml = rtc_build_aml;
     device_class_set_props(dc, mc146818rtc_properties);
-- 
2.26.3