From: Linus Walleij Subject: Re: [PATCH 05/39] ARM: ux500: Stop passing MMC's platform data for Device Tree boots Date: Wed, 15 May 2013 18:50:47 +0200 Message-ID: References: <1368611522-9984-1-git-send-email-lee.jones@linaro.org> <1368611522-9984-6-git-send-email-lee.jones@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Felipe Balbi , "linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-crypto-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "David S. Miller" , Herbert Xu , Vinod Koul , Linus WALLEIJ , Arnd Bergmann , Srinidhi KASAGAR To: Lee Jones Return-path: In-Reply-To: <1368611522-9984-6-git-send-email-lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-crypto.vger.kernel.org On Wed, May 15, 2013 at 11:51 AM, Lee Jones wrote: > It was required to pass DMA channel configuration information to the > MMC driver before the new DMA API was in place. Now that it is, and > is fully compatible with Device Tree we can stop doing that. > > Reviewed-by: Linus Walleij > Signed-off-by: Lee Jones So since the use of dma_request_slave_channel() is not upstream, I guess this will break DMA use (i.e slow down transfers!) on all device tree boots? I'd be happy to apply it once the MMCI patch is in linux-next indicating there may just be a window in the merge period where it falls back to IRQ mode, but I don't want to disable DMA on DT boots for an entire kernel cycle just like that. Not applied as of yet. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html