On Tue, Jan 16, 2018 at 10:15:51AM -0300, Philippe Mathieu-Daudé wrote:
> The SysBusDevice is the last DeviceClass::init user.
>
> Instead of using
> SysBusDeviceClass::realize
> -> DeviceClass::realize
> -> DeviceClass::init
> -> sysbus_device_init
> -> SysBusDeviceClass::init
>
> Simplify the path by directly calling SysBusDeviceClass::init
> in SysBusDeviceClass::realize:
>
> SysBusDeviceClass::realize
> -> SysBusDeviceClass::init
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> hw/core/qdev.c | 9 ---------
> hw/core/sysbus.c | 21 +++++++++------------
> 2 files changed, 9 insertions(+), 21 deletions(-)
>
> diff --git a/hw/core/qdev.c b/hw/core/qdev.c
> index 11112951a5..a4f76c8f5d 100644
> --- a/hw/core/qdev.c
> +++ b/hw/core/qdev.c
> @@ -221,15 +221,6 @@ void device_listener_unregister(DeviceListener *listener)
>
> static void device_realize(DeviceState *dev, Error **errp)
> {
> - DeviceClass *dc = DEVICE_GET_CLASS(dev);
> -
> - if (dc->init) {
> - int rc = dc->init(dev);
> - if (rc < 0) {
> - error_setg(errp, "Device initialization failed.");
> - return;
> - }
> - }
> }
If you are removing the code that makes DeviceClass::init work,
you could remove the struct field as well. I suggest either
squashing patches 07/11 and 08/11 together, or moving this hunk
to patch 08/11.
>
> static void device_unrealize(DeviceState *dev, Error **errp)
> diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c
> index 04d6061f76..9edf43bc27 100644
> --- a/hw/core/sysbus.c
> +++ b/hw/core/sysbus.c
> @@ -18,6 +18,7 @@
> */
>
> #include "qemu/osdep.h"
> +#include "qapi/error.h"
> #include "hw/sysbus.h"
> #include "monitor/monitor.h"
> #include "exec/address-spaces.h"
> @@ -200,22 +201,19 @@ void sysbus_init_ioports(SysBusDevice *dev, uint32_t ioport, uint32_t size)
> }
> }
>
> -/* TODO remove, once users are converted to realize */
> -static int sysbus_device_init(DeviceState *dev)
> +static void sysbus_realize(DeviceState *dev, Error **errp)
> {
> SysBusDevice *sd = SYS_BUS_DEVICE(dev);
> SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd);
>
> - if (!sbc->init) {
> - return 0;
> + /* TODO remove, once users are converted to realize */
> + if (sbc->init) {
> + int rc = sbc->init(sd);
> + if (rc < 0) {
> + error_setg(errp, "Device initialization failed.");
> + return;
> + }
> }
> - return sbc->init(sd);
> -}
> -
> -static void sysbus_realize(DeviceState *dev, Error **errp)
> -{
> - SysBusDevice *sd = SYS_BUS_DEVICE(dev);
> - SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd);
>
> if (sbc->realize) {
> sbc->realize(sd, errp);
> @@ -345,7 +343,6 @@ MemoryRegion *sysbus_address_space(SysBusDevice *dev)
> static void sysbus_device_class_init(ObjectClass *klass, void *data)
> {
> DeviceClass *k = DEVICE_CLASS(klass);
> - k->init = sysbus_device_init;
> k->realize = sysbus_realize;
> k->unrealize = sysbus_unrealize;
> k->bus_type = TYPE_SYSTEM_BUS;
> --
> 2.15.1
>
>
--
Eduardo