From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 21 Jun 2017 09:15:21 +0200 From: Wolfram Sang To: Jonathan Cameron Cc: "linux-iio@vger.kernel.org" Subject: Re: DMA safe buffers for I2C. Message-ID: <20170621071521.GA1574@katana> References: <5e4f022e-9434-2892-4fac-94cadd1f8f43@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="DocE+STaALJfprDB" In-Reply-To: <5e4f022e-9434-2892-4fac-94cadd1f8f43@kernel.org> List-ID: --DocE+STaALJfprDB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Jonathan, > Just looking to get up to date info on whether we need to be careful > with cachelines on buffers passed to i2c function calls or not. > i.e. do they need to DMA safe buffers. I did document this recently and forgot to add you to CC. Please check https://lkml.org/lkml/2017/6/6/189 (or I can bounce you the mails if you are interested) and kindly let me know what you think. Kind regards, Wolfram --DocE+STaALJfprDB Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAllKHQUACgkQFA3kzBSg KbZT8g/+PcmBCRuu6baHyDFfK1TyZtSCtVJiZa2GzZty698mKHBjDqfThz2p1OsS grRedV4JCQO9o/6xDcdV2POHchg5D7T+HSgxisWQI5tEKVfgD+9zuQ8cv5OyuKtw tHwfKgiKTkfJBR4nmPtRbYbQ849855fi4bhfopsmHouDk0qdDRYBV0nPv2FPh6so 4Ifa3rBrgCil8p9kofrcWu/FZ4QYp+R+9mnsS02TrWExpzO5ym6cAd59NNlRcGHC WOLMZW3wGbEyehlnClJUaZQWwC9d8PMCdyWFTSkx/XRoW50U8s8UkMzgS+eFXO4B Jf5Dqoo8XH01W9P5ESJx/9etZManxaK/G57GrJ9vmzukoph1wrDaWd9SwNIGVU5P pvYaZC+SKEurTeFAB6q9DX3UYGO0Obg6H3miMzAqEtqQih7ivkIJHj0ScKgSapA7 HFQZpc+VxAGg9ZvxYPbr827A4Yx+gbzCF+yQHJ1aeWUKmaMve9tmK1srv9Pi9QHk fKRcT393C3T/nRH0zRsgcX3GKOp6wfPbk2IGve7UA9ozseRl7h1idn+vxg3xTzJE YOZT0MiIatJ9EUgBTI4ZapPsozVY3RYGRN7ceonrdrAy5T6+60JSf26EfUHsX2K4 3Dm6CQDMAsU1lSjpGaezROWhHAhUW7+/bgYld9gDu/GCkqw2VP0= =5bbS -----END PGP SIGNATURE----- --DocE+STaALJfprDB--