linux-kernel - Re: [Question: devm_kfree] When should devm

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Message-ID: <20190528124748.GA23945@zhanggen-UX430UQ>
Date:   Tue, 28 May 2019 20:47:48 +0800
From:   Gen Zhang <blackgod016574@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     rafael@...nel.org, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [Question: devm_kfree] When should devm_kfree() be used?

On Tue, May 28, 2019 at 02:41:38PM +0200, Greg KH wrote:
> No, you are not leaking any memory if you do not call that function.
> Try it and see :)
> 
> The function is there if you just want to "free the memory now!", it's
> not necessary if you return an error as when the device is removed the
> memory will be freed then (or if probe fails, depending on the code
> path.)
> 
> thanks,
> 
> greg k-h
Thanks for your patient replies, Greg. I thinks I am getting to know 
this issue.

Thanks
Gen