From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH 04/12] spi: imx: drop fallback to PIO Date: Sat, 20 Feb 2016 00:51:03 +0900 Message-ID: <20160219155103.GS18327@sirena.org.uk> References: <1455867792-26389-1-git-send-email-s.hauer@pengutronix.de> <1455867792-26389-5-git-send-email-s.hauer@pengutronix.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ShzQXCswyqjgWi6k" Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Anton Bondarenko To: Sascha Hauer Return-path: Content-Disposition: inline In-Reply-To: <1455867792-26389-5-git-send-email-s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: --ShzQXCswyqjgWi6k Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Feb 19, 2016 at 08:43:04AM +0100, Sascha Hauer wrote: > At the moment the driver decides to fallback to PIO mode the buffers > are already mapped for DMA. It's a bug to access them with the CPU > afterwards, so we cannot just fallback to PIO mode. This doesn't apply against current code, please check and resend. --ShzQXCswyqjgWi6k Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJWxznnAAoJECTWi3JdVIfQaxAIAIIsELtT92+qKvTtaRXxMWyC 2RU7UJ9lZBFiEY2zlTLrY1s/L16QZoWKOOazOZb2kbEx5bmti+7UHro7Xuh24MTU Ws9pIMzR24bRLEUqgMULBEou3LKW4doHiQLx4R8kiAfo9WbJ1ubyKreCyeD9ZeY3 WBcdevs6G9r68qf65LmgTLCssCfxz09q2jHqs1cvn783S8QnRAur68L1DFtl6+LQ gcnCT1QetMpvy+Q6sSH2tVBF5kCbGeL/S6klXCC5jmLdZVADUnx27werc2SWFgAz 90pBzMNjifQwepZDzVIhoUtKA4jl275v19bfayn4Y/N4aqWKdA1ROrx4DJn5/JA= =Q6g3 -----END PGP SIGNATURE----- --ShzQXCswyqjgWi6k-- -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html