linux-kernel - Re: [PATCH v4 3/4] remoteproc: core: Fix cdev remove and rproc del

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Message-ID: <YMj6T7qeKwQpccPv@kroah.com>
Date:   Tue, 15 Jun 2021 21:06:55 +0200
From:   Greg KH <greg@...ah.com>
To:     Siddharth Gupta <sidgup@...eaurora.org>
Cc:     bjorn.andersson@...aro.org, ohad@...ery.com,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, psodagud@...eaurora.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v4 3/4] remoteproc: core: Fix cdev remove and rproc del

On Tue, Jun 15, 2021 at 12:03:43PM -0700, Siddharth Gupta wrote:
> The rproc_char_device_remove() call currently unmaps the cdev
> region instead of simply deleting the cdev that was added as a
> part of the rproc_char_device_add() call. This change fixes that
> behaviour, and also fixes the order in which device_del() and
> cdev_del() need to be called.
> 
> Signed-off-by: Siddharth Gupta <sidgup@...eaurora.org>
> Cc: stable@...r.kernel.org

Is this really needed for stable?  What bug does this solve?  ANd again,
fixes: ?