From: Prabhakar Kushwaha <prabhakar.pkin@gmail.com>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: Prabhakar Kushwaha <pkushwaha@marvell.com>,
stable@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
Ganapatrao Prabhakerrao Kulkarni <gkulkarni@marvell.com>,
Kamlakant Patel <kamlakantp@marvell.com>
Subject: Re: [RESEND][PATCH] ata: ahci: Add shutdown to freeze hardware resources of ahci
Date: Sat, 22 Feb 2020 09:52:27 +0530 [thread overview]
Message-ID: <CAJ2QiJLOqAFGN9UPWb0jGBE8mRvTsY3RufTt3fu2H_au6iA77A@mail.gmail.com> (raw)
In-Reply-To: <20200218044136.GB2046752@kroah.com>
On Tue, Feb 18, 2020 at 10:11 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Mon, Feb 17, 2020 at 06:28:02PM -0800, Prabhakar Kushwaha wrote:
> > device_shutdown() called from reboot or power_shutdown expect
> > all devices to be shutdown. Same is true for even ahci pci driver.
> > As no ahci shutdown function is implemented, the ata subsystem
> > always remains alive with DMA & interrupt support. File system
> > related calls should not be honored after device_shutdown().
> >
> > So defining ahci pci driver shutdown to freeze hardware (mask
> > interrupt, stop DMA engine and free DMA resources).
> >
> > Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
> > Signed-off-by: Jens Axboe <axboe@kernel.dk>
> > ---
> >
> > This problem has also been seen on older kernel. So sending to stable@vger.kernel.org
> > Note: It is already applied to git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> > with commit id: 10a663a1b151 ("ata: ahci: Add shutdown to freeze hardware resources of ahci")
>
> So what kernel(s) do you wish to have this commit backported to?
>
Sorry for the late reply. This patch should be back-ported to
following kernels versions
4.9, 4.14, 4.19, 5.4 and 5.5
--pk
next prev parent reply other threads:[~2020-02-22 4:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 2:28 [RESEND][PATCH] ata: ahci: Add shutdown to freeze hardware resources of ahci Prabhakar Kushwaha
2020-02-18 4:41 ` Greg KH
2020-02-22 4:22 ` Prabhakar Kushwaha [this message]
2020-02-27 12:50 ` Greg KH
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