Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-pull-request' into staging

Fix typos and docs, trivial changes and RTC devices split

# gpg: Signature made Fri 25 Oct 2019 09:35:02 BST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-pull-request:
  hw/rtc/aspeed_rtc: Remove unused includes
  hw/rtc/xlnx-zynqmp-rtc: Remove unused "ptimer.h" include
  hw/rtc/mc146818: Include mc146818rtc_regs.h a bit less
  hw: Move Aspeed RTC from hw/timer/ to hw/rtc/ subdirectory
  hw: Move Exynos4210 RTC from hw/timer/ to hw/rtc/ subdirectory
  hw: Move Xilinx ZynqMP RTC from hw/timer/ to hw/rtc/ subdirectory
  hw: Move DS1338 device from hw/timer/ to hw/rtc/ subdirectory
  hw: Move TWL92230 device from hw/timer/ to hw/rtc/ subdirectory
  hw: Move sun4v hypervisor RTC from hw/timer/ to hw/rtc/ subdirectory
  hw: Move M41T80 device from hw/timer/ to hw/rtc/ subdirectory
  hw: Move M48T59 device from hw/timer/ to hw/rtc/ subdirectory
  hw: Move MC146818 device from hw/timer/ to hw/rtc/ subdirectory
  hw: Move PL031 device from hw/timer/ to hw/rtc/ subdirectory
  hw/timer: Compile devices not target-dependent as common object
  qemu-timer: reuse MIN macro in qemu_timeout_ns_to_ms
  event_notifier: avoid dandling file descriptor in event_notifier_cleanup
  util/async: avoid useless cast
  pci_bridge: fix a typo in comment
  qemu-options.hx: Update for reboot-timeout parameter

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	hw/timer/trace-events

56 files changed, 213 insertions, 165 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index ed41d7d1b6..0dc72d37bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -495,8 +495,8 @@ F: hw/intc/pl190.c
 F: hw/sd/pl181.c
 F: hw/ssi/pl022.c
 F: include/hw/ssi/pl022.h
-F: hw/timer/pl031.c
-F: include/hw/timer/pl031.h
+F: hw/rtc/pl031.c
+F: include/hw/rtc/pl031.h
 F: include/hw/arm/primecell.h
 F: hw/timer/cmsdk-apb-timer.c
 F: include/hw/timer/cmsdk-apb-timer.h
@@ -663,7 +663,7 @@ F: hw/display/blizzard.c
 F: hw/input/lm832x.c
 F: hw/input/tsc2005.c
 F: hw/misc/cbus.c
-F: hw/timer/twl92230.c
+F: hw/rtc/twl92230.c
 F: include/hw/display/blizzard.h
 F: include/hw/input/tsc2xxx.h
 F: include/hw/misc/cbus.h
@@ -1064,9 +1064,9 @@ F: hw/pci-host/prep.[hc]
 F: hw/isa/i82378.c
 F: hw/isa/pc87312.c
 F: hw/dma/i82374.c
-F: hw/timer/m48t59-isa.c
+F: hw/rtc/m48t59-isa.c
 F: include/hw/isa/pc87312.h
-F: include/hw/timer/m48t59.h
+F: include/hw/rtc/m48t59.h
 F: pc-bios/ppc_rom.bin
 
 sPAPR
@@ -1111,7 +1111,7 @@ F: hw/ppc/sam460ex.c
 F: hw/ppc/ppc440_pcix.c
 F: hw/display/sm501*
 F: hw/ide/sii3112.c
-F: hw/timer/m41t80.c
+F: hw/rtc/m41t80.c
 F: pc-bios/canyonlands.dt[sb]
 F: pc-bios/u-boot-sam460ex-20100605.bin
 F: roms/u-boot-sam460ex
@@ -1163,8 +1163,8 @@ Sun4v
 M: Artyom Tarasenko <atar4qemu@gmail.com>
 S: Maintained
 F: hw/sparc64/niagara.c
-F: hw/timer/sun4v-rtc.c
-F: include/hw/timer/sun4v-rtc.h
+F: hw/rtc/sun4v-rtc.c
+F: include/hw/rtc/sun4v-rtc.h
 
 Leon3
 M: Fabien Chouteau <chouteau@adacore.com>
@@ -1261,7 +1261,7 @@ F: hw/misc/debugexit.c
 F: hw/misc/pc-testdev.c
 F: hw/timer/hpet*
 F: hw/timer/i8254*
-F: hw/timer/mc146818rtc*
+F: hw/rtc/mc146818rtc*
 F: hw/watchdog/wdt_ib700.c
 F: hw/watchdog/wdt_i6300esb.c
 F: include/hw/display/vga.h
@@ -1273,7 +1273,7 @@ F: include/hw/isa/i8259_internal.h
 F: include/hw/isa/superio.h
 F: include/hw/timer/hpet.h
 F: include/hw/timer/i8254*
-F: include/hw/timer/mc146818rtc*
+F: include/hw/rtc/mc146818rtc*
 
 Machine core
 M: Eduardo Habkost <ehabkost@redhat.com>
diff --git a/Makefile.objs b/Makefile.objs
index abcbd89654..11ba1a36bd 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -173,6 +173,7 @@ trace-events-subdirs += hw/pci-host
 trace-events-subdirs += hw/ppc
 trace-events-subdirs += hw/rdma
 trace-events-subdirs += hw/rdma/vmw
+trace-events-subdirs += hw/rtc
 trace-events-subdirs += hw/s390x
 trace-events-subdirs += hw/scsi
 trace-events-subdirs += hw/sd
diff --git a/hw/Kconfig b/hw/Kconfig
index b45db3c813..4b53fee4d0 100644
--- a/hw/Kconfig
+++ b/hw/Kconfig
@@ -27,6 +27,7 @@ source pci-host/Kconfig
 source pcmcia/Kconfig
 source pci/Kconfig
 source rdma/Kconfig
+source rtc/Kconfig
 source scsi/Kconfig
 source sd/Kconfig
 source semihosting/Kconfig
diff --git a/hw/Makefile.objs b/hw/Makefile.objs
index ece6cc3755..fd9750e5f2 100644
--- a/hw/Makefile.objs
+++ b/hw/Makefile.objs
@@ -26,6 +26,7 @@ devices-dirs-y += nvram/
 devices-dirs-y += pci/
 devices-dirs-$(CONFIG_PCI) += pci-bridge/ pci-host/
 devices-dirs-y += pcmcia/
+devices-dirs-y += rtc/
 devices-dirs-$(CONFIG_SCSI) += scsi/
 devices-dirs-y += sd/
 devices-dirs-y += ssi/
diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
index 51feee8558..51b3cf7a61 100644
--- a/hw/alpha/dp264.c
+++ b/hw/alpha/dp264.c
@@ -14,7 +14,7 @@
 #include "alpha_sys.h"
 #include "qemu/error-report.h"
 #include "sysemu/sysemu.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/ide.h"
 #include "hw/timer/i8254.h"
 #include "hw/isa/superio.h"
diff --git a/hw/arm/musca.c b/hw/arm/musca.c
index 68db4b5b38..ba99dd1941 100644
--- a/hw/arm/musca.c
+++ b/hw/arm/musca.c
@@ -32,7 +32,7 @@
 #include "hw/misc/tz-mpc.h"
 #include "hw/misc/tz-ppc.h"
 #include "hw/misc/unimp.h"
-#include "hw/timer/pl031.h"
+#include "hw/rtc/pl031.h"
 
 #define MUSCA_NUMIRQ_MAX 96
 #define MUSCA_PPC_MAX 3
diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index 953d454f48..b30aba6d54 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -12,7 +12,7 @@
 #include "qemu/error-report.h"
 #include "sysemu/reset.h"
 #include "sysemu/sysemu.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/ide.h"
 #include "hw/timer/i8254.h"
 #include "hw/char/serial.h"
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 1d077a7cb7..d9435ba0b3 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -45,7 +45,7 @@
 #include "hw/acpi/vmgenid.h"
 #include "hw/boards.h"
 #include "sysemu/tpm_backend.h"
-#include "hw/timer/mc146818rtc_regs.h"
+#include "hw/rtc/mc146818rtc_regs.h"
 #include "migration/vmstate.h"
 #include "hw/mem/memory-device.h"
 #include "sysemu/numa.h"
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 4b1904237e..51b72439b4 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -42,7 +42,7 @@
 #include "elf.h"
 #include "migration/vmstate.h"
 #include "multiboot.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/dma/i8257.h"
 #include "hw/timer/i8254.h"
 #include "hw/input/i8042.h"
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 8fad20f314..748fc2ee15 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -33,7 +33,7 @@
 #include "hw/loader.h"
 #include "sysemu/arch_init.h"
 #include "hw/i2c/smbus_eeprom.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/xen/xen.h"
 #include "sysemu/kvm.h"
 #include "kvm_i386.h"
diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
index cf537dd7e6..03a27e1767 100644
--- a/hw/mips/mips_fulong2e.c
+++ b/hw/mips/mips_fulong2e.c
@@ -39,7 +39,7 @@
 #include "hw/ide.h"
 #include "elf.h"
 #include "hw/isa/vt82c686.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/timer/i8254.h"
 #include "exec/address-spaces.h"
 #include "sysemu/qtest.h"
diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 8d010a0b6e..d978bb64a0 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -39,7 +39,7 @@
 #include "hw/scsi/esp.h"
 #include "hw/mips/bios.h"
 #include "hw/loader.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/timer/i8254.h"
 #include "hw/display/vga.h"
 #include "hw/audio/pcspk.h"
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 4d9c64b36a..c1c8810e71 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -45,7 +45,7 @@
 #include "hw/irq.h"
 #include "hw/loader.h"
 #include "elf.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/timer/i8254.h"
 #include "exec/address-spaces.h"
 #include "hw/sysbus.h"             /* SysBusDevice */
diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
index bc0be26544..70024235ae 100644
--- a/hw/mips/mips_r4k.c
+++ b/hw/mips/mips_r4k.c
@@ -28,7 +28,7 @@
 #include "hw/ide.h"
 #include "hw/loader.h"
 #include "elf.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/input/i8042.h"
 #include "hw/timer/i8254.h"
 #include "exec/address-spaces.h"
diff --git a/hw/pci/pci_bridge.c b/hw/pci/pci_bridge.c
index 715b9a4fe6..97967d12eb 100644
--- a/hw/pci/pci_bridge.c
+++ b/hw/pci/pci_bridge.c
@@ -311,7 +311,7 @@ void pci_bridge_reset(DeviceState *qdev)
 
     /*
      * the default values for base/limit registers aren't specified
-     * in the PCI-to-PCI-bridge spec. So we don't thouch them here.
+     * in the PCI-to-PCI-bridge spec. So we don't touch them here.
      * Each implementation can override it.
      * typical implementation does
      * zero base/limit registers or
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 4a51fb65a8..60632720ef 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -48,7 +48,7 @@
 #include "hw/isa/isa.h"
 #include "hw/boards.h"
 #include "hw/char/serial.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 
 #include <libfdt.h>
 
diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 388cae0b43..1f721feed6 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -29,7 +29,7 @@
 #include "cpu.h"
 #include "hw/ppc/ppc.h"
 #include "ppc405.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "hw/block/flash.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/qtest.h"
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index 4f3c6bf190..862345c2ac 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -25,7 +25,7 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "hw/char/serial.h"
 #include "hw/block/fdc.h"
 #include "net/net.h"
@@ -40,7 +40,7 @@
 #include "hw/ide.h"
 #include "hw/irq.h"
 #include "hw/loader.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
 #include "hw/isa/pc87312.h"
 #include "hw/net/ne2000-isa.h"
 #include "sysemu/arch_init.h"
diff --git a/hw/rtc/Kconfig b/hw/rtc/Kconfig
new file mode 100644
index 0000000000..45daa8d655
--- /dev/null
+++ b/hw/rtc/Kconfig
@@ -0,0 +1,23 @@
+config DS1338
+    bool
+    depends on I2C
+
+config M41T80
+    bool
+    depends on I2C
+
+config M48T59
+    bool
+
+config PL031
+    bool
+
+config TWL92230
+    bool
+    depends on I2C
+
+config MC146818RTC
+    bool
+
+config SUN4V_RTC
+    bool
diff --git a/hw/rtc/Makefile.objs b/hw/rtc/Makefile.objs
new file mode 100644
index 0000000000..8dc9fcd3a9
--- /dev/null
+++ b/hw/rtc/Makefile.objs
@@ -0,0 +1,13 @@
+common-obj-$(CONFIG_DS1338) += ds1338.o
+common-obj-$(CONFIG_M41T80) += m41t80.o
+common-obj-$(CONFIG_M48T59) += m48t59.o
+ifeq ($(CONFIG_ISA_BUS),y)
+common-obj-$(CONFIG_M48T59) += m48t59-isa.o
+endif
+common-obj-$(CONFIG_PL031) += pl031.o
+common-obj-$(CONFIG_TWL92230) += twl92230.o
+common-obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp-rtc.o
+common-obj-$(CONFIG_EXYNOS4) += exynos4210_rtc.o
+obj-$(CONFIG_MC146818RTC) += mc146818rtc.o
+common-obj-$(CONFIG_SUN4V_RTC) += sun4v-rtc.o
+common-obj-$(CONFIG_ASPEED_SOC) += aspeed_rtc.o
diff --git a/hw/timer/aspeed_rtc.c b/hw/rtc/aspeed_rtc.c
index 5313017353..3ca1183558 100644
--- a/hw/timer/aspeed_rtc.c
+++ b/hw/rtc/aspeed_rtc.c
@@ -8,7 +8,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "hw/timer/aspeed_rtc.h"
+#include "hw/rtc/aspeed_rtc.h"
 #include "migration/vmstate.h"
 #include "qemu/log.h"
 #include "qemu/timer.h"
diff --git a/hw/timer/ds1338.c b/hw/rtc/ds1338.c
index 588a9ba9be..588a9ba9be 100644
--- a/hw/timer/ds1338.c
+++ b/hw/rtc/ds1338.c
diff --git a/hw/timer/exynos4210_rtc.c b/hw/rtc/exynos4210_rtc.c
index f85483a07f..f85483a07f 100644
--- a/hw/timer/exynos4210_rtc.c
+++ b/hw/rtc/exynos4210_rtc.c
diff --git a/hw/timer/m41t80.c b/hw/rtc/m41t80.c
index 914ecac8f4..914ecac8f4 100644
--- a/hw/timer/m41t80.c
+++ b/hw/rtc/m41t80.c
diff --git a/hw/timer/m48t59-internal.h b/hw/rtc/m48t59-internal.h
index 4d4f2a6fed..4d4f2a6fed 100644
--- a/hw/timer/m48t59-internal.h
+++ b/hw/rtc/m48t59-internal.h
diff --git a/hw/timer/m48t59-isa.c b/hw/rtc/m48t59-isa.c
index 5e5432abfd..7fde854c0f 100644
--- a/hw/timer/m48t59-isa.c
+++ b/hw/rtc/m48t59-isa.c
@@ -1,5 +1,5 @@
 /*
- * QEMU M48T59 and M48T08 NVRAM emulation (ISA bus interface
+ * QEMU M48T59 and M48T08 NVRAM emulation (ISA bus interface)
  *
  * Copyright (c) 2003-2005, 2007 Jocelyn Mayer
  * Copyright (c) 2013 Hervé Poussineau
@@ -26,7 +26,7 @@
 #include "qemu/osdep.h"
 #include "hw/isa/isa.h"
 #include "hw/qdev-properties.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "m48t59-internal.h"
 #include "qemu/module.h"
 
diff --git a/hw/timer/m48t59.c b/hw/rtc/m48t59.c
index a9fc2f981a..fc592b9fb1 100644
--- a/hw/timer/m48t59.c
+++ b/hw/rtc/m48t59.c
@@ -27,7 +27,7 @@
 #include "qemu-common.h"
 #include "hw/irq.h"
 #include "hw/qdev-properties.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "qemu/timer.h"
 #include "sysemu/runstate.h"
 #include "sysemu/sysemu.h"
diff --git a/hw/timer/mc146818rtc.c b/hw/rtc/mc146818rtc.c
index 6cb378751b..9d4ed54f65 100644
--- a/hw/timer/mc146818rtc.c
+++ b/hw/rtc/mc146818rtc.c
@@ -34,7 +34,8 @@
 #include "sysemu/replay.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc_regs.h"
 #include "migration/vmstate.h"
 #include "qapi/error.h"
 #include "qapi/qapi-commands-misc-target.h"
diff --git a/hw/timer/pl031.c b/hw/rtc/pl031.c
index 2b3e261006..3a982752a2 100644
--- a/hw/timer/pl031.c
+++ b/hw/rtc/pl031.c
@@ -13,7 +13,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "hw/timer/pl031.h"
+#include "hw/rtc/pl031.h"
 #include "migration/vmstate.h"
 #include "hw/irq.h"
 #include "hw/qdev-properties.h"
diff --git a/hw/timer/sun4v-rtc.c b/hw/rtc/sun4v-rtc.c
index 54272a822f..ada01b5774 100644
--- a/hw/timer/sun4v-rtc.c
+++ b/hw/rtc/sun4v-rtc.c
@@ -13,7 +13,7 @@
 #include "hw/sysbus.h"
 #include "qemu/module.h"
 #include "qemu/timer.h"
-#include "hw/timer/sun4v-rtc.h"
+#include "hw/rtc/sun4v-rtc.h"
 #include "trace.h"
 
 
diff --git a/hw/rtc/trace-events b/hw/rtc/trace-events
new file mode 100644
index 0000000000..d6749f4616
--- /dev/null
+++ b/hw/rtc/trace-events
@@ -0,0 +1,19 @@
+# See docs/devel/tracing.txt for syntax documentation.
+
+# sun4v-rtc.c
+sun4v_rtc_read(uint64_t addr, uint64_t value) "read: addr 0x%" PRIx64 " value 0x%" PRIx64
+sun4v_rtc_write(uint64_t addr, uint64_t value) "write: addr 0x%" PRIx64 " value 0x%" PRIx64
+
+# xlnx-zynqmp-rtc.c
+xlnx_zynqmp_rtc_gettime(int year, int month, int day, int hour, int min, int sec) "Get time from host: %d-%d-%d %2d:%02d:%02d"
+
+# pl031.c
+pl031_irq_state(int level) "irq state %d"
+pl031_read(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x"
+pl031_write(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x"
+pl031_alarm_raised(void) "alarm raised"
+pl031_set_alarm(uint32_t ticks) "alarm set for %u ticks"
+
+# aspeed-rtc.c
+aspeed_rtc_read(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64
+aspeed_rtc_write(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64
diff --git a/hw/timer/twl92230.c b/hw/rtc/twl92230.c
index 63bd13d2ca..63bd13d2ca 100644
--- a/hw/timer/twl92230.c
+++ b/hw/rtc/twl92230.c
diff --git a/hw/timer/xlnx-zynqmp-rtc.c b/hw/rtc/xlnx-zynqmp-rtc.c
index 5692db98c2..2bcd14d779 100644
--- a/hw/timer/xlnx-zynqmp-rtc.c
+++ b/hw/rtc/xlnx-zynqmp-rtc.c
@@ -32,11 +32,10 @@
 #include "qemu/log.h"
 #include "qemu/module.h"
 #include "hw/irq.h"
-#include "hw/ptimer.h"
 #include "qemu/cutils.h"
 #include "sysemu/sysemu.h"
 #include "trace.h"
-#include "hw/timer/xlnx-zynqmp-rtc.h"
+#include "hw/rtc/xlnx-zynqmp-rtc.h"
 #include "migration/vmstate.h"
 
 #ifndef XLNX_ZYNQMP_RTC_ERR_DEBUG
diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 6c5a17a020..2aaa5bf1ae 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -31,7 +31,7 @@
 #include "qemu/error-report.h"
 #include "qemu/timer.h"
 #include "hw/sparc/sun4m_iommu.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "migration/vmstate.h"
 #include "hw/sparc/sparc32_dma.h"
 #include "hw/block/fdc.h"
diff --git a/hw/sparc64/niagara.c b/hw/sparc64/niagara.c
index 5987693659..5eb2d097b9 100644
--- a/hw/sparc64/niagara.c
+++ b/hw/sparc64/niagara.c
@@ -30,7 +30,7 @@
 #include "hw/misc/unimp.h"
 #include "hw/loader.h"
 #include "hw/sparc/sparc64.h"
-#include "hw/timer/sun4v-rtc.h"
+#include "hw/rtc/sun4v-rtc.h"
 #include "exec/address-spaces.h"
 #include "sysemu/block-backend.h"
 #include "qemu/error-report.h"
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 1ded2a4c9a..955082773b 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -36,7 +36,7 @@
 #include "hw/pci-host/sabre.h"
 #include "hw/char/serial.h"
 #include "hw/char/parallel.h"
-#include "hw/timer/m48t59.h"
+#include "hw/rtc/m48t59.h"
 #include "migration/vmstate.h"
 #include "hw/input/i8042.h"
 #include "hw/block/fdc.h"
diff --git a/hw/timer/Kconfig b/hw/timer/Kconfig
index eefc95f35e..a990f9fe35 100644
--- a/hw/timer/Kconfig
+++ b/hw/timer/Kconfig
@@ -9,10 +9,6 @@ config ARM_MPTIMER
 config A9_GTIMER
     bool
 
-config DS1338
-    bool
-    depends on I2C
-
 config HPET
     bool
     default y if PC
@@ -20,27 +16,10 @@ config HPET
 config I8254
     bool
 
-config M41T80
-    bool
-    depends on I2C
-
-config M48T59
-    bool
-
-config PL031
-    bool
-
-config TWL92230
-    bool
-    depends on I2C
-
 config ALTERA_TIMER
     bool
     select PTIMER
 
-config MC146818RTC
-    bool
-
 config ALLWINNER_A10_PIT
     bool
     select PTIMER
@@ -48,9 +27,6 @@ config ALLWINNER_A10_PIT
 config STM32F2XX_TIMER
     bool
 
-config SUN4V_RTC
-    bool
-
 config CMSDK_APB_TIMER
     bool
     select PTIMER
diff --git a/hw/timer/Makefile.objs b/hw/timer/Makefile.objs
index 696cda5905..dece235fd7 100644
--- a/hw/timer/Makefile.objs
+++ b/hw/timer/Makefile.objs
@@ -3,17 +3,9 @@ common-obj-$(CONFIG_ARM_MPTIMER) += arm_mptimer.o
 common-obj-$(CONFIG_ARM_V7M) += armv7m_systick.o
 common-obj-$(CONFIG_A9_GTIMER) += a9gtimer.o
 common-obj-$(CONFIG_CADENCE) += cadence_ttc.o
-common-obj-$(CONFIG_DS1338) += ds1338.o
 common-obj-$(CONFIG_HPET) += hpet.o
 common-obj-$(CONFIG_I8254) += i8254_common.o i8254.o
-common-obj-$(CONFIG_M41T80) += m41t80.o
-common-obj-$(CONFIG_M48T59) += m48t59.o
-ifeq ($(CONFIG_ISA_BUS),y)
-common-obj-$(CONFIG_M48T59) += m48t59-isa.o
-endif
-common-obj-$(CONFIG_PL031) += pl031.o
 common-obj-$(CONFIG_PUV3) += puv3_ost.o
-common-obj-$(CONFIG_TWL92230) += twl92230.o
 common-obj-$(CONFIG_XILINX) += xilinx_timer.o
 common-obj-$(CONFIG_SLAVIO) += slavio_timer.o
 common-obj-$(CONFIG_ETRAXFS) += etraxfs_timer.o
@@ -22,28 +14,23 @@ common-obj-$(CONFIG_IMX) += imx_epit.o
 common-obj-$(CONFIG_IMX) += imx_gpt.o
 common-obj-$(CONFIG_LM32) += lm32_timer.o
 common-obj-$(CONFIG_MILKYMIST) += milkymist-sysctl.o
-common-obj-$(CONFIG_XLNX_ZYNQMP) += xlnx-zynqmp-rtc.o
 common-obj-$(CONFIG_NRF51_SOC) += nrf51_timer.o
 
-obj-$(CONFIG_ALTERA_TIMER) += altera_timer.o
-obj-$(CONFIG_EXYNOS4) += exynos4210_mct.o
-obj-$(CONFIG_EXYNOS4) += exynos4210_pwm.o
-obj-$(CONFIG_EXYNOS4) += exynos4210_rtc.o
-obj-$(CONFIG_OMAP) += omap_gptimer.o
-obj-$(CONFIG_OMAP) += omap_synctimer.o
-obj-$(CONFIG_PXA2XX) += pxa2xx_timer.o
-obj-$(CONFIG_SH4) += sh_timer.o
-obj-$(CONFIG_DIGIC) += digic-timer.o
-obj-$(CONFIG_MIPS_CPS) += mips_gictimer.o
+common-obj-$(CONFIG_ALTERA_TIMER) += altera_timer.o
+common-obj-$(CONFIG_EXYNOS4) += exynos4210_mct.o
+common-obj-$(CONFIG_EXYNOS4) += exynos4210_pwm.o
+common-obj-$(CONFIG_OMAP) += omap_gptimer.o
+common-obj-$(CONFIG_OMAP) += omap_synctimer.o
+common-obj-$(CONFIG_PXA2XX) += pxa2xx_timer.o
+common-obj-$(CONFIG_SH4) += sh_timer.o
+common-obj-$(CONFIG_DIGIC) += digic-timer.o
+common-obj-$(CONFIG_MIPS_CPS) += mips_gictimer.o
 
-obj-$(CONFIG_MC146818RTC) += mc146818rtc.o
-
-obj-$(CONFIG_ALLWINNER_A10_PIT) += allwinner-a10-pit.o
+common-obj-$(CONFIG_ALLWINNER_A10_PIT) += allwinner-a10-pit.o
 
 common-obj-$(CONFIG_STM32F2XX_TIMER) += stm32f2xx_timer.o
-common-obj-$(CONFIG_ASPEED_SOC) += aspeed_timer.o aspeed_rtc.o
+common-obj-$(CONFIG_ASPEED_SOC) += aspeed_timer.o
 
-common-obj-$(CONFIG_SUN4V_RTC) += sun4v-rtc.o
 common-obj-$(CONFIG_CMSDK_APB_TIMER) += cmsdk-apb-timer.o
 common-obj-$(CONFIG_CMSDK_APB_DUALTIMER) += cmsdk-apb-dualtimer.o
 common-obj-$(CONFIG_MSF2) += mss-timer.o
diff --git a/hw/timer/hpet.c b/hw/timer/hpet.c
index 1ddae4e7d7..9f17aaa278 100644
--- a/hw/timer/hpet.c
+++ b/hw/timer/hpet.c
@@ -33,7 +33,8 @@
 #include "qemu/timer.h"
 #include "hw/timer/hpet.h"
 #include "hw/sysbus.h"
-#include "hw/timer/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc.h"
+#include "hw/rtc/mc146818rtc_regs.h"
 #include "migration/vmstate.h"
 #include "hw/timer/i8254.h"
 
diff --git a/hw/timer/trace-events b/hw/timer/trace-events
index 0aa399ac69..29fda7870e 100644
--- a/hw/timer/trace-events
+++ b/hw/timer/trace-events
@@ -66,28 +66,10 @@ cmsdk_apb_dualtimer_read(uint64_t offset, uint64_t data, unsigned size) "CMSDK A
 cmsdk_apb_dualtimer_write(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB dualtimer write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
 cmsdk_apb_dualtimer_reset(void) "CMSDK APB dualtimer: reset"
 
-# hw/timer/aspeed-rtc.c
-aspeed_rtc_read(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64
-aspeed_rtc_write(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64
-
-# sun4v-rtc.c
-sun4v_rtc_read(uint64_t addr, uint64_t value) "read: addr 0x%" PRIx64 " value 0x%" PRIx64
-sun4v_rtc_write(uint64_t addr, uint64_t value) "write: addr 0x%" PRIx64 " value 0x%" PRIx64
-
-# xlnx-zynqmp-rtc.c
-xlnx_zynqmp_rtc_gettime(int year, int month, int day, int hour, int min, int sec) "Get time from host: %d-%d-%d %2d:%02d:%02d"
-
 # nrf51_timer.c
 nrf51_timer_read(uint64_t addr, uint32_t value, unsigned size) "read addr 0x%" PRIx64 " data 0x%" PRIx32 " size %u"
 nrf51_timer_write(uint64_t addr, uint32_t value, unsigned size) "write addr 0x%" PRIx64 " data 0x%" PRIx32 " size %u"
 
-# pl031.c
-pl031_irq_state(int level) "irq state %d"
-pl031_read(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x"
-pl031_write(uint32_t addr, uint32_t value) "addr 0x%08x value 0x%08x"
-pl031_alarm_raised(void) "alarm raised"
-pl031_set_alarm(uint32_t ticks) "alarm set for %u ticks"
-
 # bcm2835_systmr.c
 bcm2835_systmr_irq(bool enable) "timer irq state %u"
 bcm2835_systmr_read(uint64_t offset, uint64_t data) "timer read: offset 0x%" PRIx64 " data 0x%" PRIx64
diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index cccb684a19..495c08be1b 100644
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -18,7 +18,7 @@
 #include "hw/misc/aspeed_sdmc.h"
 #include "hw/misc/aspeed_xdma.h"
 #include "hw/timer/aspeed_timer.h"
-#include "hw/timer/aspeed_rtc.h"
+#include "hw/rtc/aspeed_rtc.h"
 #include "hw/i2c/aspeed_i2c.h"
 #include "hw/ssi/aspeed_smc.h"
 #include "hw/watchdog/wdt_aspeed.h"
diff --git a/include/hw/arm/xlnx-zynqmp.h b/include/hw/arm/xlnx-zynqmp.h
index d7483c3b42..53076fa29a 100644
--- a/include/hw/arm/xlnx-zynqmp.h
+++ b/include/hw/arm/xlnx-zynqmp.h
@@ -29,7 +29,7 @@
 #include "hw/dma/xlnx-zdma.h"
 #include "hw/display/xlnx_dp.h"
 #include "hw/intc/xlnx-zynqmp-ipi.h"
-#include "hw/timer/xlnx-zynqmp-rtc.h"
+#include "hw/rtc/xlnx-zynqmp-rtc.h"
 #include "hw/cpu/cluster.h"
 #include "target/arm/cpu.h"
 
diff --git a/include/hw/timer/aspeed_rtc.h b/include/hw/rtc/aspeed_rtc.h
index 15ba42912b..b94a710268 100644
--- a/include/hw/timer/aspeed_rtc.h
+++ b/include/hw/rtc/aspeed_rtc.h
@@ -5,12 +5,9 @@
  * Copyright 2019 IBM Corp
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
-#ifndef ASPEED_RTC_H
-#define ASPEED_RTC_H
+#ifndef HW_RTC_ASPEED_RTC_H
+#define HW_RTC_ASPEED_RTC_H
 
-#include <stdint.h>
-
-#include "hw/irq.h"
 #include "hw/sysbus.h"
 
 typedef struct AspeedRtcState {
@@ -27,4 +24,4 @@ typedef struct AspeedRtcState {
 #define TYPE_ASPEED_RTC "aspeed.rtc"
 #define ASPEED_RTC(obj) OBJECT_CHECK(AspeedRtcState, (obj), TYPE_ASPEED_RTC)
 
-#endif /* ASPEED_RTC_H */
+#endif /* HW_RTC_ASPEED_RTC_H */
diff --git a/include/hw/rtc/m48t59.h b/include/hw/rtc/m48t59.h
new file mode 100644
index 0000000000..e7ea4e8761
--- /dev/null
+++ b/include/hw/rtc/m48t59.h
@@ -0,0 +1,57 @@
+/*
+ * QEMU M48T59 and M48T08 NVRAM emulation
+ *
+ * Copyright (c) 2003-2005, 2007 Jocelyn Mayer
+ * Copyright (c) 2013 Hervé Poussineau
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef HW_RTC_M48T59_H
+#define HW_RTC_M48T59_H
+
+#include "exec/hwaddr.h"
+#include "qom/object.h"
+
+#define TYPE_NVRAM "nvram"
+
+#define NVRAM_CLASS(klass) \
+    OBJECT_CLASS_CHECK(NvramClass, (klass), TYPE_NVRAM)
+#define NVRAM_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(NvramClass, (obj), TYPE_NVRAM)
+#define NVRAM(obj) \
+    INTERFACE_CHECK(Nvram, (obj), TYPE_NVRAM)
+
+typedef struct Nvram Nvram;
+
+typedef struct NvramClass {
+    InterfaceClass parent;
+
+    uint32_t (*read)(Nvram *obj, uint32_t addr);
+    void (*write)(Nvram *obj, uint32_t addr, uint32_t val);
+    void (*toggle_lock)(Nvram *obj, int lock);
+} NvramClass;
+
+Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size,
+                       int base_year, int type);
+Nvram *m48t59_init(qemu_irq IRQ, hwaddr mem_base,
+                   uint32_t io_base, uint16_t size, int base_year,
+                   int type);
+
+#endif /* HW_M48T59_H */
diff --git a/include/hw/timer/mc146818rtc.h b/include/hw/rtc/mc146818rtc.h
index fe6ed63f71..7fa59d4279 100644
--- a/include/hw/timer/mc146818rtc.h
+++ b/include/hw/rtc/mc146818rtc.h
@@ -1,8 +1,15 @@
-#ifndef MC146818RTC_H
-#define MC146818RTC_H
+/*
+ * QEMU MC146818 RTC emulation
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef HW_RTC_MC146818RTC_H
+#define HW_RTC_MC146818RTC_H
 
 #include "hw/isa/isa.h"
-#include "hw/timer/mc146818rtc_regs.h"
 
 #define TYPE_MC146818_RTC "mc146818rtc"
 
diff --git a/include/hw/timer/mc146818rtc_regs.h b/include/hw/rtc/mc146818rtc_regs.h
index bfbb57e570..dd6c09e2fc 100644
--- a/include/hw/timer/mc146818rtc_regs.h
+++ b/include/hw/rtc/mc146818rtc_regs.h
@@ -22,10 +22,11 @@
  * THE SOFTWARE.
  */
 
-#ifndef MC146818RTC_REGS_H
-#define MC146818RTC_REGS_H
+#ifndef HW_RTC_MC146818RTC_REGS_H
+#define HW_RTC_MC146818RTC_REGS_H
 
 #include "qemu/timer.h"
+#include "qemu/host-utils.h"
 
 #define RTC_ISA_IRQ 8
 
diff --git a/include/hw/timer/pl031.h b/include/hw/rtc/pl031.h
index 8c3f555ee2..e3cb1d646f 100644
--- a/include/hw/timer/pl031.h
+++ b/include/hw/rtc/pl031.h
@@ -11,10 +11,11 @@
  * GNU GPL, version 2 or (at your option) any later version.
  */
 
-#ifndef HW_TIMER_PL031_H
-#define HW_TIMER_PL031_H
+#ifndef HW_RTC_PL031_H
+#define HW_RTC_PL031_H
 
 #include "hw/sysbus.h"
+#include "qemu/timer.h"
 
 #define TYPE_PL031 "pl031"
 #define PL031(obj) OBJECT_CHECK(PL031State, (obj), TYPE_PL031)
diff --git a/include/hw/rtc/sun4v-rtc.h b/include/hw/rtc/sun4v-rtc.h
new file mode 100644
index 0000000000..fd868f6ed2
--- /dev/null
+++ b/include/hw/rtc/sun4v-rtc.h
@@ -0,0 +1,19 @@
+/*
+ * QEMU sun4v Real Time Clock device
+ *
+ * The sun4v_rtc device (sun4v tod clock)
+ *
+ * Copyright (c) 2016 Artyom Tarasenko
+ *
+ * This code is licensed under the GNU GPL v3 or (at your option) any later
+ * version.
+ */
+
+#ifndef HW_RTC_SUN4V
+#define HW_RTC_SUN4V
+
+#include "exec/hwaddr.h"
+
+void sun4v_rtc_init(hwaddr addr);
+
+#endif
diff --git a/include/hw/timer/xlnx-zynqmp-rtc.h b/include/hw/rtc/xlnx-zynqmp-rtc.h
index 97e32322ed..6fa1cb2f43 100644
--- a/include/hw/timer/xlnx-zynqmp-rtc.h
+++ b/include/hw/rtc/xlnx-zynqmp-rtc.h
@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2017 Xilinx Inc.
  *
- * Written-by: Alistair Francis <alistair.francis@xilinx.com>
+ * Written-by: Alistair Francis
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
-#ifndef HW_TIMER_XLNX_ZYNQMP_RTC_H
-#define HW_TIMER_XLNX_ZYNQMP_RTC_H
+#ifndef HW_RTC_XLNX_ZYNQMP_H
+#define HW_RTC_XLNX_ZYNQMP_H
 
 #include "hw/register.h"
 #include "hw/sysbus.h"
diff --git a/include/hw/timer/m48t59.h b/include/hw/timer/m48t59.h
deleted file mode 100644
index f74854c026..0000000000
--- a/include/hw/timer/m48t59.h
+++ /dev/null
@@ -1,32 +0,0 @@
-#ifndef HW_M48T59_H
-#define HW_M48T59_H
-
-#include "exec/hwaddr.h"
-#include "qom/object.h"
-
-#define TYPE_NVRAM "nvram"
-
-#define NVRAM_CLASS(klass) \
-    OBJECT_CLASS_CHECK(NvramClass, (klass), TYPE_NVRAM)
-#define NVRAM_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(NvramClass, (obj), TYPE_NVRAM)
-#define NVRAM(obj) \
-    INTERFACE_CHECK(Nvram, (obj), TYPE_NVRAM)
-
-typedef struct Nvram Nvram;
-
-typedef struct NvramClass {
-    InterfaceClass parent;
-
-    uint32_t (*read)(Nvram *obj, uint32_t addr);
-    void (*write)(Nvram *obj, uint32_t addr, uint32_t val);
-    void (*toggle_lock)(Nvram *obj, int lock);
-} NvramClass;
-
-Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size,
-                       int base_year, int type);
-Nvram *m48t59_init(qemu_irq IRQ, hwaddr mem_base,
-                   uint32_t io_base, uint16_t size, int base_year,
-                   int type);
-
-#endif /* HW_M48T59_H */
diff --git a/include/hw/timer/sun4v-rtc.h b/include/hw/timer/sun4v-rtc.h
deleted file mode 100644
index 407278f918..0000000000
--- a/include/hw/timer/sun4v-rtc.h
+++ /dev/null
@@ -1 +0,0 @@
-void sun4v_rtc_init(hwaddr addr);
diff --git a/qemu-options.hx b/qemu-options.hx
index 996b6fba74..88b05599b1 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -327,8 +327,8 @@ format(true color). The resolution should be supported by the SVGA mode, so
 the recommended is 320x240, 640x480, 800x640.
 
 A timeout could be passed to bios, guest will pause for @var{rb_timeout} ms
-when boot failed, then reboot. If @var{rb_timeout} is '-1', guest will not
-reboot, qemu passes '-1' to bios by default. Currently Seabios for X86
+when boot failed, then reboot. If @option{reboot-timeout} is not set,
+guest will not reboot by default. Currently Seabios for X86
 system support it.
 
 Do strict boot via @option{strict=on} as far as firmware/BIOS
diff --git a/tests/rtc-test.c b/tests/rtc-test.c
index 6309b0ef6c..79a4ff1ed6 100644
--- a/tests/rtc-test.c
+++ b/tests/rtc-test.c
@@ -15,7 +15,7 @@
 
 #include "libqtest-single.h"
 #include "qemu/timer.h"
-#include "hw/timer/mc146818rtc_regs.h"
+#include "hw/rtc/mc146818rtc_regs.h"
 
 #define UIP_HOLD_LENGTH           (8 * NANOSECONDS_PER_SECOND / 32768)
 
diff --git a/util/async.c b/util/async.c
index ca83e32c7f..b1fa5319e5 100644
--- a/util/async.c
+++ b/util/async.c
@@ -429,7 +429,6 @@ AioContext *aio_context_new(Error **errp)
 
     aio_set_event_notifier(ctx, &ctx->notifier,
                            false,
-                           (EventNotifierHandler *)
                            event_notifier_dummy_cb,
                            event_notifier_poll);
 #ifdef CONFIG_LINUX_AIO
diff --git a/util/event_notifier-posix.c b/util/event_notifier-posix.c
index 73c4046b58..00d93204f9 100644
--- a/util/event_notifier-posix.c
+++ b/util/event_notifier-posix.c
@@ -80,8 +80,8 @@ void event_notifier_cleanup(EventNotifier *e)
 {
     if (e->rfd != e->wfd) {
         close(e->rfd);
-        e->rfd = -1;
     }
+    e->rfd = -1;
     close(e->wfd);
     e->wfd = -1;
 }
diff --git a/util/qemu-timer.c b/util/qemu-timer.c
index d428fec567..ef52d28d37 100644
--- a/util/qemu-timer.c
+++ b/util/qemu-timer.c
@@ -322,11 +322,7 @@ int qemu_timeout_ns_to_ms(int64_t ns)
     ms = DIV_ROUND_UP(ns, SCALE_MS);
 
     /* To avoid overflow problems, limit this to 2^31, i.e. approx 25 days */
-    if (ms > (int64_t) INT32_MAX) {
-        ms = INT32_MAX;
-    }
-
-    return (int) ms;
+    return MIN(ms, INT32_MAX);
 }