Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Tue, 18 Jul 2023 09:42:18 +0200
From:   Thierry Reding <thierry.reding@gmail.com>
To:     Haotien Hsu <haotienh@nvidia.com>
Cc:     Mathias Nyman <mathias.nyman@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        linux-usb@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-kernel@vger.kernel.org, Wayne Chang <waynec@nvidia.com>,
        JC Kuo <jckuo@nvidia.com>, WK Tsai <wtsai@nvidia.com>,
        Henry Lin <henryl@nvidia.com>
Subject: Re: [PATCH] usb: xhci: tegra: Add shutdown callback for Tegra XUSB
Message-ID: <ZLZCWgJTm5Wk-glL@orome>
References: <20230718072057.233011-1-haotienh@nvidia.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
        protocol="application/pgp-signature"; boundary="i1iMksCSr7RDaYjM"
Content-Disposition: inline
In-Reply-To: <20230718072057.233011-1-haotienh@nvidia.com>
User-Agent: Mutt/2.2.10 (2023-03-25)
Precedence: bulk


--i1iMksCSr7RDaYjM
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Tue, Jul 18, 2023 at 03:20:57PM +0800, Haotien Hsu wrote:
> From: Henry Lin <henryl@nvidia.com>
>=20
> If memory accesses by the Tegra XUSB controller are translated through
> the SMMU (System MMU), the hardware may continue accessing memory even
> after the SMMU translations have been disabled during the shutdown
> process and this can in turn cause unpredictable crashes.
> Fix this by adding a shutdown implementation that ensures the hardware
> is turned off during system reboot or shutdown.
>=20
> Signed-off-by: Henry Lin <henryl@nvidia.com>
> Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
> ---
>  drivers/usb/host/xhci-tegra.c | 28 +++++++++++++++++++++-------
>  1 file changed, 21 insertions(+), 7 deletions(-)

I just noticed that there's a typo in the linux-usb@vger.kernel.org
mailing list address, so you may want to resend this to make sure this
goes to the patch tracker and all.

Thierry

--i1iMksCSr7RDaYjM
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=BU6p
-----END PGP SIGNATURE-----

--i1iMksCSr7RDaYjM--