linux-kernel - Re: [PATCH v16 4/4] bus: mhi: Add userspace client interface driver

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Message-ID: <X9HifqAntBUBV0Ce@kroah.com>
Date:   Thu, 10 Dec 2020 09:55:26 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Hemant Kumar <hemantk@...eaurora.org>
Cc:     manivannan.sadhasivam@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jhugo@...eaurora.org,
        bbhatt@...eaurora.org, loic.poulain@...aro.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v16 4/4] bus: mhi: Add userspace client interface driver

On Wed, Dec 09, 2020 at 11:21:25PM -0800, Hemant Kumar wrote:
> This MHI client driver allows userspace clients to transfer
> raw data between MHI device and host using standard file operations.
> Driver instantiates UCI device object which is associated to device
> file node. UCI device object instantiates UCI channel object when device
> file node is opened. UCI channel object is used to manage MHI channels
> by calling MHI core APIs for read and write operations. MHI channels
> are started as part of device open(). MHI channels remain in start
> state until last release() is called on UCI device file node. Device
> file node is created with format
> 
> /dev/<mhi_device_name>
> 
> Currently it supports QMI channel.
> 
> Signed-off-by: Hemant Kumar <hemantk@...eaurora.org>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Reviewed-by: Jeffrey Hugo <jhugo@...eaurora.org>
> Tested-by: Loic Poulain <loic.poulain@...aro.org>
> ---

Can you provide a pointer to the open-source userspace program that will
be talking to this new kernel driver please?  That should be part of the
changelog here.

thanks,

greg k-h