[PATCH 7/7] musicpal: Use ptimer_free() in the finalize function to avoid memleaks

[Gan Qixin]

When running device-introspect-test, a memory leak occurred in the 
mv88w8618_pit_init
function, so use ptimer_free() in the finalize function to avoid it.

ASAN shows memory leak stack:

Indirect leak of 192 byte(s) in 4 object(s) allocated from:
    #0 0xffffab97e1f0 in __interceptor_calloc (/lib64/libasan.so.5+0xee1f0)
    #1 0xffffab256800 in g_malloc0 (/lib64/libglib-2.0.so.0+0x56800)
    #2 0xaaabf555db84 in timer_new_full /qemu/include/qemu/timer.h:523
    #3 0xaaabf555db84 in timer_new /qemu/include/qemu/timer.h:544
    #4 0xaaabf555db84 in timer_new_ns /qemu/include/qemu/timer.h:562
    #5 0xaaabf555db84 in ptimer_init /qemu/hw/core/ptimer.c:433
    #6 0xaaabf5bb2290 in mv88w8618_timer_init /qemu/hw/arm/musicpal.c:862
    #7 0xaaabf5bb2290 in mv88w8618_pit_init /qemu/hw/arm/musicpal.c:954
    #8 0xaaabf6339f6c in object_initialize_with_type /qemu/qom/object.c:515
    #9 0xaaabf633a1e0 in object_new_with_type /qemu/qom/object.c:729
    #10 0xaaabf6375e40 in qmp_device_list_properties 
/qemu/qom/qom-qmp-cmds.c:153
    #11 0xaaabf5a95540 in qdev_device_help /qemu/softmmu/qdev-monitor.c:283
    #12 0xaaabf5a96940 in qmp_device_add /qemu/softmmu/qdev-monitor.c:801

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
---
Cc: Jan Kiszka <jan.kiszka@web.de>
---
 hw/arm/musicpal.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index 458b1cbeb7..0e77082e52 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -959,6 +959,17 @@ static void mv88w8618_pit_init(Object *obj)
     sysbus_init_mmio(dev, &s->iomem);
 }
 
+static void mv88w8618_pit_finalize(Object *obj)
+{
+    SysBusDevice *dev = SYS_BUS_DEVICE(obj);
+    mv88w8618_pit_state *s = MV88W8618_PIT(dev);
+    int i;
+
+    for (i = 0; i < 4; i++) {
+        ptimer_free(s->timer[i].ptimer);
+    }
+}
+
 static const VMStateDescription mv88w8618_timer_vmsd = {
     .name = "timer",
     .version_id = 1,
@@ -990,11 +1001,12 @@ static void mv88w8618_pit_class_init(ObjectClass *klass, 
void *data)
 }
 
 static const TypeInfo mv88w8618_pit_info = {
-    .name          = TYPE_MV88W8618_PIT,
-    .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_size = sizeof(mv88w8618_pit_state),
-    .instance_init = mv88w8618_pit_init,
-    .class_init    = mv88w8618_pit_class_init,
+    .name              = TYPE_MV88W8618_PIT,
+    .parent            = TYPE_SYS_BUS_DEVICE,
+    .instance_size     = sizeof(mv88w8618_pit_state),
+    .instance_init     = mv88w8618_pit_init,
+    .instance_finalize = mv88w8618_pit_finalize,
+    .class_init        = mv88w8618_pit_class_init,
 };
 
 /* Flash config register offsets */
-- 
2.23.0