On 09/06/2015 07:30 PM, Mauro Carvalho Chehab wrote:
> If media controller is enabled and mdev is filled, it should
> ensure that the media graph will be properly initialized.
>
> Enforce that.
>
> Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
>
> diff --git a/drivers/media/common/siano/smsdvb-main.c
> b/drivers/media/common/siano/smsdvb-main.c
> index f4305ae800f4..ab345490a43a 100644
> --- a/drivers/media/common/siano/smsdvb-main.c
> +++ b/drivers/media/common/siano/smsdvb-main.c
> @@ -1183,7 +1183,11 @@ static int smsdvb_hotplug(struct smscore_device_t
> *coredev,
> if (smsdvb_debugfs_create(client) < 0)
> pr_info("failed to create debugfs node\n");
>
> - dvb_create_media_graph(&client->adapter);
> + rc = dvb_create_media_graph(&client->adapter);
> + if (rc < 0) {
> + pr_err("dvb_create_media_graph failed %d\n", rc);
> + goto client_error;
> + }
>
> pr_info("DVB interface registered.\n");
> return 0;
> diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
> index 5c51084a331a..df2fe4cc2d47 100644
> --- a/drivers/media/dvb-core/dvbdev.c
> +++ b/drivers/media/dvb-core/dvbdev.c
> @@ -430,17 +430,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct
> dvb_device **pdvbdev,
> return -ENOMEM;
> }
>
> - ret = dvb_register_media_device(dvbdev, type, minor, demux_sink_pads);
> - if (ret) {
> - printk(KERN_ERR
> - "%s: dvb_register_media_device failed to create the
> mediagraph\n",
> - __func__);
> -
> - dvb_media_device_free(dvbdev);
> - mutex_unlock(&dvbdev_register_lock);
> - return ret;
> - }
> -
> dvbdevfops = kzalloc(sizeof(struct file_operations), GFP_KERNEL);
>
> if (!dvbdevfops){
> @@ -493,6 +482,17 @@ int dvb_register_device(struct dvb_adapter *adap, struct
> dvb_device **pdvbdev,
> __func__, adap->num, dnames[type], id, PTR_ERR(clsdev));
> return PTR_ERR(clsdev);
> }
> +
> + ret = dvb_register_media_device(dvbdev, type, minor, demux_sink_pads);
> + if (ret) {
> + printk(KERN_ERR
> + "%s: dvb_register_media_device failed to create the media
> graph\n",
> + __func__);
> +
> + dvb_unregister_device(dvbdev);
> + return ret;
> + }
> +
> dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i
> (0x%02x)\n",
> adap->num, dnames[type], id, minor, minor);
>
> diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h
> index 9e24aafeb9ea..bd9fac91c7b9 100644
> --- a/drivers/media/dvb-core/dvbdev.h
> +++ b/drivers/media/dvb-core/dvbdev.h
> @@ -210,7 +210,7 @@ int dvb_register_device(struct dvb_adapter *adap,
> void dvb_unregister_device(struct dvb_device *dvbdev);
>
> #ifdef CONFIG_MEDIA_CONTROLLER_DVB
> -int dvb_create_media_graph(struct dvb_adapter *adap);
> +__must_check int dvb_create_media_graph(struct dvb_adapter *adap);
> static inline void dvb_register_media_controller(struct dvb_adapter *adap,
> struct media_device *mdev)
> {
> diff --git a/drivers/media/usb/au0828/au0828-dvb.c
> b/drivers/media/usb/au0828/au0828-dvb.c
> index c01772c4f9f0..cd542b49a6c2 100644
> --- a/drivers/media/usb/au0828/au0828-dvb.c
> +++ b/drivers/media/usb/au0828/au0828-dvb.c
> @@ -486,12 +486,14 @@ static int dvb_register(struct au0828_dev *dev)
> dvb->start_count = 0;
> dvb->stop_count = 0;
>
> -#ifdef CONFIG_MEDIA_CONTROLLER_DVB
> - dvb_create_media_graph(&dvb->adapter);
> -#endif
> + result = dvb_create_media_graph(&dvb->adapter);
> + if (result < 0)
> + goto fail_create_graph;
>
> return 0;
>
> +fail_create_graph:
> + dvb_net_release(&dvb->net);
> fail_fe_conn:
> dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
> fail_fe_mem:
> diff --git a/drivers/media/usb/cx231xx/cx231xx-dvb.c
> b/drivers/media/usb/cx231xx/cx231xx-dvb.c
> index 66ee161fc7ba..aaf8ef246f13 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-dvb.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-dvb.c
> @@ -551,10 +551,14 @@ static int register_dvb(struct cx231xx_dvb *dvb,
>
> /* register network adapter */
> dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
> - dvb_create_media_graph(&dvb->adapter);
> + result = dvb_create_media_graph(&dvb->adapter);
> + if (result < 0)
> + goto fail_create_graph;
>
> return 0;
>
> +fail_create_graph:
> + dvb_net_release(&dvb->net);
> fail_fe_conn:
> dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
> fail_fe_mem:
> diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
> b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
> index f5df9eaba04f..6d3f61f6dc77 100644
> --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
> +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
> @@ -698,7 +698,9 @@ static int dvb_usbv2_adapter_frontend_init(struct
> dvb_usb_adapter *adap)
> }
> }
>
> - dvb_create_media_graph(&adap->dvb_adap);
> + ret = dvb_create_media_graph(&adap->dvb_adap);
> + if (ret < 0)
> + goto err_dvb_unregister_frontend;
>
> return 0;
>
> diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
> b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
> index 8a260c854653..b51dbdf03f42 100644
> --- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
> +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c
> @@ -318,10 +318,12 @@ int dvb_usb_adapter_frontend_init(struct
> dvb_usb_adapter *adap)
>
> adap->num_frontends_initialized++;
> }
> + if (ret)
> + return ret;
>
> - dvb_create_media_graph(&adap->dvb_adap);
> + ret = dvb_create_media_graph(&adap->dvb_adap);
>
> - return 0;
> + return ret;
> }
>
> int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)
>
--
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