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[46.91.239.54]) by smtp.gmail.com with ESMTPSA id u13sm3027365wrq.62.2019.06.04.03.56.26 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 04 Jun 2019 03:56:26 -0700 (PDT) Date: Tue, 4 Jun 2019 12:56:25 +0200 From: Thierry Reding To: Dmitry Osipenko Cc: Jonathan Hunter , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Tomeu Vizoso , linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 03/16] PM / devfreq: tegra: Replace write memory barrier with the read barrier Message-ID: <20190604105625.GC16519@ulmo> References: <20190501233815.32643-1-digetx@gmail.com> <20190501233815.32643-4-digetx@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Y5rl02BVI9TCfPar" Content-Disposition: inline In-Reply-To: <20190501233815.32643-4-digetx@gmail.com> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Y5rl02BVI9TCfPar Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, May 02, 2019 at 02:38:02AM +0300, Dmitry Osipenko wrote: > The write memory barrier isn't needed because the BUS buffer is flushed > by read after write that happens after the removed wmb(), we will also > use readl() instead of the relaxed version to ensure that read is indeed > completed. >=20 > Reviewed-by: Chanwoo Choi > Signed-off-by: Dmitry Osipenko > --- > drivers/devfreq/tegra-devfreq.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) Acked-by: Thierry Reding --Y5rl02BVI9TCfPar Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAlz2TlkACgkQ3SOs138+ s6H9PhAAjyyQ3koVZYH/hahMlqPEixyEjfbN26+C7gkROXuFYnQQZupAVw1l69RQ 6yxAwwLOrmabKNH7xdqGJaTNHc+7WF7kJQATGndqDIUhAOyoicu/yUlT7SGKQam1 t2mtSOYPHDkB7v0xRFlagPLzzzYEiYkBv+2KnkSqQBvw1q4Hof6NbbFLcyzFN39X tcAgRQ851lZz+51r1ip2CEeFXrTt7c3Lb1ZbcpN9oMyiby/DQhT/IkRtI/mTw+jd LKGDNV5xXLGADtea4yyzyttGNaJxaVKa0ZIBnmSxoeUlXnSlJfpYvkK/xnFSx+m3 az9WhqvkAu3zYM8XsZMjuXIwMOwHvEP8dARBd6pR8HtdtDR9AXUOtgwQImQtWAUc 7gDccXxkUtx0k7Y33izZMS/qnPSHWYyw+9+6bHdgvgGkvw9na8eVIj7FPXX+BEo/ BrQBF7AfQ035H21h3qhjXZeUkgADMeKgxlizvNSvcfm+UeNP+kK3Wo2MnXHqZiJp K9rcqJOkaxtt9mDoHkMLkmrSe7ykYelMnTu/Su9aOPC+oDVSnOoLQatQmKzt5c9K Vu7uizim3K/RCQRaowMILmT1/CHzjoW1LGTdKmF8gPYdt6n9DTdkMzhoCo3jTNyP FdDj2FVrBhZemfZYiOpXbNAQh2pvWpwr+TFNFoEDH0RI50eMr1Q= =l/Ef -----END PGP SIGNATURE----- --Y5rl02BVI9TCfPar--