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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190823143249.8096-6-philmd@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Fri, 23 Aug 2019 17:37:01 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH v2 5/6] hw/dma/xilinx_axi: Use object_initialize_child for correct ref. counting X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Alistair Francis , Eduardo Habkost , Andrey Smirnov , Jason Wang , Alistair Francis , Jean-Christophe Dubois , Beniamino Galvani , Igor Mitsyanko , qemu-arm@nongnu.org, Peter Chubb , Antony Pavlov , "Edgar E. Iglesias" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/23/19 4:32 PM, Philippe Mathieu-Daud=C3=A9 wrote: > As explained in commit aff39be0ed97: >=20 > Both functions, object_initialize() and object_property_add_child() > increase the reference counter of the new object, so one of the > references has to be dropped afterwards to get the reference > counting right. Otherwise the child object will not be properly > cleaned up when the parent gets destroyed. > Thus let's use now object_initialize_child() instead to get the > reference counting here right. >=20 > Reviewed-by: Alistair Francis > Signed-off-by: Philippe Mathieu-Daud=C3=A9 > --- > v2: fix typo ENET -> DMA in TYPE macro name > --- > hw/dma/xilinx_axidma.c | 16 ++++++++-------- > 1 file changed, 8 insertions(+), 8 deletions(-) >=20 > diff --git a/hw/dma/xilinx_axidma.c b/hw/dma/xilinx_axidma.c > index d176df6d44..a254275b64 100644 > --- a/hw/dma/xilinx_axidma.c > +++ b/hw/dma/xilinx_axidma.c > @@ -566,14 +566,14 @@ static void xilinx_axidma_init(Object *obj) > XilinxAXIDMA *s =3D XILINX_AXI_DMA(obj); > SysBusDevice *sbd =3D SYS_BUS_DEVICE(obj); > =20 > - object_initialize(&s->rx_data_dev, sizeof(s->rx_data_dev), > - TYPE_XILINX_AXI_DMA_DATA_STREAM); > - object_initialize(&s->rx_control_dev, sizeof(s->rx_control_dev), > - TYPE_XILINX_AXI_DMA_CONTROL_STREAM); > - object_property_add_child(OBJECT(s), "axistream-connected-target", > - (Object *)&s->rx_data_dev, &error_abort)= ; > - object_property_add_child(OBJECT(s), "axistream-control-connected-= target", > - (Object *)&s->rx_control_dev, &error_abo= rt); > + object_initialize_child(OBJECT(s), "axistream-connected-target", > + &s->rx_data_dev, sizeof(s->rx_data_dev), > + TYPE_XILINX_AXI_DMA_DATA_STREAM, &error_ab= ort, > + NULL); > + object_initialize_child(OBJECT(s), "axistream-control-connected-ta= rget", > + &s->rx_control_dev, sizeof(s->rx_control_d= ev), > + TYPE_XILINX_AXI_DMA_CONTROL_STREAM, &error= _abort, > + NULL); > =20 > sysbus_init_irq(sbd, &s->streams[0].irq); > sysbus_init_irq(sbd, &s->streams[1].irq); >=20 Reviewed-by: Thomas Huth