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Date:   Thu, 9 Nov 2017 21:14:35 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Vinod Koul <vinod.koul@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        ALSA <alsa-devel@...a-project.org>, Mark <broonie@...nel.org>,
        Takashi <tiwai@...e.de>,
        Pierre <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Shreyas NC <shreyas.nc@...el.com>, patches.audio@...el.com,
        alan@...ux.intel.com,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Sagar Dharia <sdharia@...eaurora.org>, plai@...eaurora.org,
        Sudheer Papothi <spapothi@...eaurora.org>
Subject: Re: [PATCH 10/14] soundwire: Add sysfs for SoundWire DisCo properties



On 19/10/17 04:03, Vinod Koul wrote:
> It helps to read the properties for understanding and debug
> SoundWire systems, so add sysfs files for SoundWire DisCo
> properties.
> 
> TODO: Add ABI files for sysfs
> 
> Signed-off-by: Sanyog Kale <sanyog.r.kale@...el.com>
> Signed-off-by: Vinod Koul <vinod.koul@...el.com>
> ---

> diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
> index 6c4f41b64744..e3d7aea18892 100644
> --- a/drivers/soundwire/bus.c
> +++ b/drivers/soundwire/bus.c
> @@ -90,6 +90,8 @@ int sdw_add_bus_master(struct sdw_bus *bus)
>   		}
>   	}
>   
> +	sdw_sysfs_bus_init(bus);
> +
>   	/*
>   	 * SDW is an enumerable bus, but devices can be powered off. So,
>   	 * they won't be able to report as present.
> @@ -119,6 +121,8 @@ static int sdw_delete_slave(struct device *dev, void *data)
>   	struct sdw_slave *slave = dev_to_sdw_dev(dev);
>   	struct sdw_bus *bus = slave->bus;
>   
> +	sdw_sysfs_slave_exit(slave);
> +
>   	mutex_lock(&bus->bus_lock);
>   	if (!list_empty(&bus->slaves))
>   		list_del(&slave->node);
> @@ -130,6 +134,7 @@ static int sdw_delete_slave(struct device *dev, void *data)
>   
>   void sdw_delete_bus_master(struct sdw_bus *bus)
>   {
> +	sdw_sysfs_bus_init(bus);

Shouldn't this be sdw_sysfs_bus_exit() here?


>   	device_for_each_child(bus->dev, NULL, sdw_delete_slave);
>   }

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