linux-kernel - Re: [stable 4.19][PATCH 06/17] remoteproc: fix rproc_da_to

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Message-ID: <CANLsYkyBBp_bAjsEuS=ZDY=Qza67PrwyWJUaDdBHTe1ZM1=2jw@mail.gmail.com>
Date:   Wed, 4 Dec 2019 11:13:05 -0700
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     "# 4 . 7" <stable@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [stable 4.19][PATCH 06/17] remoteproc: fix rproc_da_to_va in case
 of unallocated carveout

On Tue, 3 Dec 2019 at 12:43, Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Thu, Nov 28, 2019 at 09:49:51AM -0700, Mathieu Poirier wrote:
> > From: Loic Pallardy <loic.pallardy@...com>
> >
> > commit 74457c40f97a98142bb13153395d304ad3c85cdd upstream
> >
> > With introduction of rproc_alloc_registered_carveouts() which
> > delays carveout allocation just before the start of the remote
> > processor, rproc_da_to_va() could be called before all carveouts
> > are allocated.
> > This patch adds a check in rproc_da_to_va() to return NULL if
> > carveout is not allocated.
> >
> > Fixes: d7c51706d095 ("remoteproc: add alloc ops in rproc_mem_entry struct")
>
> This commit only shows up in 4.20, not 4.19, so why is this patch
> relevant for 4.19?

Your scripts are better than mine...

>
> thanks,
>
> greg k-h