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[217.229.24.144]) by smtp.gmail.com with ESMTPSA id w7sm122386485wrn.11.2019.08.13.02.46.35 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 13 Aug 2019 02:46:35 -0700 (PDT) Date: Tue, 13 Aug 2019 11:46:35 +0200 From: Thierry Reding To: Krishna Yarlagadda Cc: gregkh@linuxfoundation.org, robh+dt@kernel.org, mark.rutland@arm.com, jonathanh@nvidia.com, ldewangan@nvidia.com, jslaby@suse.com, linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Ahung Cheng Subject: Re: [PATCH 04/14] serial: tegra: protect IER against LCR.DLAB Message-ID: <20190813094635.GI1137@ulmo> References: <1565609303-27000-1-git-send-email-kyarlagadda@nvidia.com> <1565609303-27000-5-git-send-email-kyarlagadda@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="cVp8NMj01v+Em8Se" Content-Disposition: inline In-Reply-To: <1565609303-27000-5-git-send-email-kyarlagadda@nvidia.com> User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --cVp8NMj01v+Em8Se Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Aug 12, 2019 at 04:58:13PM +0530, Krishna Yarlagadda wrote: > From: Ahung Cheng >=20 > The IER and DLH registers occupy the same address space, selected by > the LCR.DLAB bit. Hence, add port lock to protect IER when LCR.DLAB bit > is set. >=20 > Signed-off-by: Ahung Cheng > Signed-off-by: Krishna Yarlagadda > --- > drivers/tty/serial/serial-tegra.c | 3 +++ > 1 file changed, 3 insertions(+) Acked-by: Thierry Reding --cVp8NMj01v+Em8Se Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl1ShvoACgkQ3SOs138+ s6ELYg/+O1adqcMU5/CWtP2Mlzii/9QsLg7Ocr3E1iAHX1QgRkmcf85BzjkgPUt1 2T6erGS1mdXQFtlWADtskxzCWdKeOoUlKAdPmbApwB0QF+ELBUhjbOGfRS1vUg6I /9jeiW70PL9cvuw1/X2E/hIwMTNPWmKfnvP+ONzUwlwQ2Kw98FoW9zbNAUlPgS1B tj61fXIFNgNhVL2PbAUsWXfakFADl/X4dGxs+pDLOL61xUi4Ag4CXhS6tGckEKwS 6alqh/cxVmOl4OFAdaTo5dUX3rZ91dAg7Q420SjpkzVZBqxuj5lW2yHLetYVyXXZ 4LX/QOa7wSo8ImnnxhcNJQcEyL6DxP1szp2Cpp077tfokinqLg7jd1wf+PYJgRcU 8hE2XwpiUOg2+MHCZ2seseQ16zBJIgwI4CW+hmQJaxDeO45TCObZVD2Q/UqT+pFC s8RnxF33IpYatRaIFrrDMJNOrg0+hPbZQlip2epvheR5uXNmtGVX9D9hIlnaaGLj VfFr04huq6qaW8VPzYjWNnFQaclFHCt5OLJqa7KUHZlmGD6GB2XPiJIcuQ/MEoBd iZDvcHNDuonVWu7YlDqaj+Zk+AU/mstYsNjF+j9mdwKbg3/UI61YCvtXLRTgNUmX A5lpw2v9X1xdro8y9hJ6vKDQCaRSgwxd5nf7KCkNnRtQ6HOgefw= =itlT -----END PGP SIGNATURE----- --cVp8NMj01v+Em8Se--