[Qemu-devel] [PATCH v4 0/3] use object link instead of qdev property

[Qemu-devel] [PATCH v4 0/3] use object link instead of qdev property

[Mao Zhongyi]

According to qdev-properties.h, properties of pointer type
should be avoid, so convert qdev property to link, Whilst we
are here, also update some hardcoded strings with already
defineded macros.

v4:
-fixed the "Broken pipe" error when "make check"

v3:
-removed incorrected "To: xxx" tags from commit message
-keep 'dc->user_creatable = false' in mv88w8618_audio_class_init()

v2:
-removed the patch1
-removed the TYPE_name in VMStateDescription.name

Cc: Jan Kiszka <jan.kiszka@web.de>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>

Mao Zhongyi (3):
  audio: use TYPE_WM8750 instead of a hardcoded string
  audio: use object link instead of qdev property to pass wm8750
    reference
  audio: use TYPE_MV88W8618_AUDIO instead of hardcoded string

 hw/arm/musicpal.c          |  5 +++--
 hw/audio/marvell_88w8618.c | 14 ++++++--------
 include/hw/audio/wm8750.h  |  1 +
 3 files changed, 10 insertions(+), 10 deletions(-)

-- 
2.17.1

[Qemu-devel] [PATCH v4 1/3] audio: use TYPE_WM8750 instead of a hardcoded string

[Mao Zhongyi]

Cc: Jan Kiszka <jan.kiszka@web.de>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/musicpal.c          | 2 +-
 hw/audio/marvell_88w8618.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index c807010e83..3dafb41b0b 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -1695,7 +1695,7 @@ static void musicpal_init(MachineState *machine)
     wm8750_dev = i2c_create_slave(i2c, TYPE_WM8750, MP_WM_ADDR);
     dev = qdev_create(NULL, "mv88w8618_audio");
     s = SYS_BUS_DEVICE(dev);
-    qdev_prop_set_ptr(dev, "wm8750", wm8750_dev);
+    qdev_prop_set_ptr(dev, TYPE_WM8750, wm8750_dev);
     qdev_init_nofail(dev);
     sysbus_mmio_map(s, 0, MP_AUDIO_BASE);
     sysbus_connect_irq(s, 0, pic[MP_AUDIO_IRQ]);
diff --git a/hw/audio/marvell_88w8618.c b/hw/audio/marvell_88w8618.c
index e546892d3c..cf6ce6979b 100644
--- a/hw/audio/marvell_88w8618.c
+++ b/hw/audio/marvell_88w8618.c
@@ -280,7 +280,7 @@ static const VMStateDescription mv88w8618_audio_vmsd = {
 };
 
 static Property mv88w8618_audio_properties[] = {
-    DEFINE_PROP_PTR("wm8750", mv88w8618_audio_state, wm),
+    DEFINE_PROP_PTR(TYPE_WM8750, mv88w8618_audio_state, wm),
     {/* end of list */},
 };
 
-- 
2.17.1

[Qemu-devel] [PATCH v4 2/3] audio: use object link instead of qdev property to pass wm8750 reference

[Mao Zhongyi]

According to qdev-properties.h, properties of pointer type should
be avoided, it seems a link type property is a good substitution.

Cc: Jan Kiszka <jan.kiszka@web.de>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
---
 hw/arm/musicpal.c          |  3 ++-
 hw/audio/marvell_88w8618.c | 13 ++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index 3dafb41b0b..ac266f9253 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -1695,7 +1695,8 @@ static void musicpal_init(MachineState *machine)
     wm8750_dev = i2c_create_slave(i2c, TYPE_WM8750, MP_WM_ADDR);
     dev = qdev_create(NULL, "mv88w8618_audio");
     s = SYS_BUS_DEVICE(dev);
-    qdev_prop_set_ptr(dev, TYPE_WM8750, wm8750_dev);
+    object_property_set_link(OBJECT(dev), OBJECT(wm8750_dev),
+                             TYPE_WM8750, NULL);
     qdev_init_nofail(dev);
     sysbus_mmio_map(s, 0, MP_AUDIO_BASE);
     sysbus_connect_irq(s, 0, pic[MP_AUDIO_IRQ]);
diff --git a/hw/audio/marvell_88w8618.c b/hw/audio/marvell_88w8618.c
index cf6ce6979b..1c7080e844 100644
--- a/hw/audio/marvell_88w8618.c
+++ b/hw/audio/marvell_88w8618.c
@@ -15,6 +15,7 @@
 #include "hw/i2c/i2c.h"
 #include "hw/audio/wm8750.h"
 #include "audio/audio.h"
+#include "qapi/error.h"
 
 #define MP_AUDIO_SIZE           0x00001000
 
@@ -252,6 +253,11 @@ static void mv88w8618_audio_init(Object *obj)
     memory_region_init_io(&s->iomem, obj, &mv88w8618_audio_ops, s,
                           "audio", MP_AUDIO_SIZE);
     sysbus_init_mmio(dev, &s->iomem);
+
+    object_property_add_link(OBJECT(dev), "wm8750", TYPE_WM8750,
+                             (Object **) &s->wm,
+                             qdev_prop_allow_set_link_before_realize,
+                             0, &error_abort);
 }
 
 static void mv88w8618_audio_realize(DeviceState *dev, Error **errp)
@@ -279,11 +285,6 @@ static const VMStateDescription mv88w8618_audio_vmsd = {
     }
 };
 
-static Property mv88w8618_audio_properties[] = {
-    DEFINE_PROP_PTR(TYPE_WM8750, mv88w8618_audio_state, wm),
-    {/* end of list */},
-};
-
 static void mv88w8618_audio_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -291,8 +292,6 @@ static void mv88w8618_audio_class_init(ObjectClass *klass, void *data)
     dc->realize = mv88w8618_audio_realize;
     dc->reset = mv88w8618_audio_reset;
     dc->vmsd = &mv88w8618_audio_vmsd;
-    dc->props = mv88w8618_audio_properties;
-    /* Reason: pointer property "wm8750" */
     dc->user_creatable = false;
 }
 
-- 
2.17.1

[Qemu-devel] [PATCH v4 3/3] audio: use TYPE_MV88W8618_AUDIO instead of hardcoded string

[Mao Zhongyi]

Cc: Jan Kiszka <jan.kiszka@web.de>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/musicpal.c          | 2 +-
 hw/audio/marvell_88w8618.c | 1 -
 include/hw/audio/wm8750.h  | 1 +
 3 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index ac266f9253..9648b3af44 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -1693,7 +1693,7 @@ static void musicpal_init(MachineState *machine)
     }
 
     wm8750_dev = i2c_create_slave(i2c, TYPE_WM8750, MP_WM_ADDR);
-    dev = qdev_create(NULL, "mv88w8618_audio");
+    dev = qdev_create(NULL, TYPE_MV88W8618_AUDIO);
     s = SYS_BUS_DEVICE(dev);
     object_property_set_link(OBJECT(dev), OBJECT(wm8750_dev),
                              TYPE_WM8750, NULL);
diff --git a/hw/audio/marvell_88w8618.c b/hw/audio/marvell_88w8618.c
index 1c7080e844..6600ab4851 100644
--- a/hw/audio/marvell_88w8618.c
+++ b/hw/audio/marvell_88w8618.c
@@ -39,7 +39,6 @@
 #define MP_AUDIO_CLOCK_24MHZ    (1 << 9)
 #define MP_AUDIO_MONO           (1 << 14)
 
-#define TYPE_MV88W8618_AUDIO "mv88w8618_audio"
 #define MV88W8618_AUDIO(obj) \
     OBJECT_CHECK(mv88w8618_audio_state, (obj), TYPE_MV88W8618_AUDIO)
 
diff --git a/include/hw/audio/wm8750.h b/include/hw/audio/wm8750.h
index 84e7a119bb..e12cb886d1 100644
--- a/include/hw/audio/wm8750.h
+++ b/include/hw/audio/wm8750.h
@@ -17,6 +17,7 @@
 #include "hw/hw.h"
 
 #define TYPE_WM8750 "wm8750"
+#define TYPE_MV88W8618_AUDIO "mv88w8618_audio"
 
 typedef void data_req_cb(void *opaque, int free_out, int free_in);
 
-- 
2.17.1

Re: [Qemu-devel] [PATCH v4 2/3] audio: use object link instead of qdev property to pass wm8750 reference

[Philippe Mathieu-Daudé]

On 22/10/18 9:40, Mao Zhongyi wrote:
> According to qdev-properties.h, properties of pointer type should
> be avoided, it seems a link type property is a good substitution.
> 
> Cc: Jan Kiszka <jan.kiszka@web.de>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> 
> Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>   hw/arm/musicpal.c          |  3 ++-
>   hw/audio/marvell_88w8618.c | 13 ++++++-------
>   2 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
> index 3dafb41b0b..ac266f9253 100644
> --- a/hw/arm/musicpal.c
> +++ b/hw/arm/musicpal.c
> @@ -1695,7 +1695,8 @@ static void musicpal_init(MachineState *machine)
>       wm8750_dev = i2c_create_slave(i2c, TYPE_WM8750, MP_WM_ADDR);
>       dev = qdev_create(NULL, "mv88w8618_audio");
>       s = SYS_BUS_DEVICE(dev);
> -    qdev_prop_set_ptr(dev, TYPE_WM8750, wm8750_dev);
> +    object_property_set_link(OBJECT(dev), OBJECT(wm8750_dev),
> +                             TYPE_WM8750, NULL);
>       qdev_init_nofail(dev);
>       sysbus_mmio_map(s, 0, MP_AUDIO_BASE);
>       sysbus_connect_irq(s, 0, pic[MP_AUDIO_IRQ]);
> diff --git a/hw/audio/marvell_88w8618.c b/hw/audio/marvell_88w8618.c
> index cf6ce6979b..1c7080e844 100644
> --- a/hw/audio/marvell_88w8618.c
> +++ b/hw/audio/marvell_88w8618.c
> @@ -15,6 +15,7 @@
>   #include "hw/i2c/i2c.h"
>   #include "hw/audio/wm8750.h"
>   #include "audio/audio.h"
> +#include "qapi/error.h"
>   
>   #define MP_AUDIO_SIZE           0x00001000
>   
> @@ -252,6 +253,11 @@ static void mv88w8618_audio_init(Object *obj)
>       memory_region_init_io(&s->iomem, obj, &mv88w8618_audio_ops, s,
>                             "audio", MP_AUDIO_SIZE);
>       sysbus_init_mmio(dev, &s->iomem);
> +
> +    object_property_add_link(OBJECT(dev), "wm8750", TYPE_WM8750,
> +                             (Object **) &s->wm,
> +                             qdev_prop_allow_set_link_before_realize,
> +                             0, &error_abort);
>   }
>   
>   static void mv88w8618_audio_realize(DeviceState *dev, Error **errp)
> @@ -279,11 +285,6 @@ static const VMStateDescription mv88w8618_audio_vmsd = {
>       }
>   };
>   
> -static Property mv88w8618_audio_properties[] = {
> -    DEFINE_PROP_PTR(TYPE_WM8750, mv88w8618_audio_state, wm),
> -    {/* end of list */},
> -};
> -
>   static void mv88w8618_audio_class_init(ObjectClass *klass, void *data)
>   {
>       DeviceClass *dc = DEVICE_CLASS(klass);
> @@ -291,8 +292,6 @@ static void mv88w8618_audio_class_init(ObjectClass *klass, void *data)
>       dc->realize = mv88w8618_audio_realize;
>       dc->reset = mv88w8618_audio_reset;
>       dc->vmsd = &mv88w8618_audio_vmsd;
> -    dc->props = mv88w8618_audio_properties;
> -    /* Reason: pointer property "wm8750" */
>       dc->user_creatable = false;
>   }
>   
>