From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: [PATCH v5 5/9] dmaengine: rcar-dmac: slave address are physical Date: Thu, 17 Mar 2016 13:30:20 +0200 Message-ID: <1661205.m6h487t3oE@avalon> References: <1457404974-1800-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> <1457404974-1800-6-git-send-email-niklas.soderlund+renesas@ragnatech.se> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1457404974-1800-6-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Niklas =?ISO-8859-1?Q?S=F6derlund?= Cc: linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org, vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-arch.vger.kernel.org Hi Niklas, Thank you for the patch. On Tuesday 08 March 2016 03:42:50 Niklas S=F6derlund wrote: > Slave addresses coming from a client is physical not dma. Store the > address using the correct data type. This is in preparation for hooking > up the dma-mapping API to the slave addresses. > = > Signed-off-by: Niklas S=F6derlund > --- > drivers/dma/sh/rcar-dmac.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > = > diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c > index 7820d07..01cf82f 100644 > --- a/drivers/dma/sh/rcar-dmac.c > +++ b/drivers/dma/sh/rcar-dmac.c > @@ -144,8 +144,8 @@ struct rcar_dmac_chan { > = > unsigned int src_xfer_size; > unsigned int dst_xfer_size; > - dma_addr_t src_slave_addr; > - dma_addr_t dst_slave_addr; > + phys_addr_t src_slave_addr; > + phys_addr_t dst_slave_addr; This moves the cast from phys_addr_t to dma_addr_t from the driver's DMA = engine operations to other places. I'm not sure there's much value in doing = so. I'd squash this patch with 7/9, the result will be easier to review. > int mid_rid; > = > spinlock_t lock; -- = Regards, Laurent Pinchart From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from galahad.ideasonboard.com ([185.26.127.97]:33785 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936290AbcCQQnX convert rfc822-to-8bit (ORCPT ); Thu, 17 Mar 2016 12:43:23 -0400 From: Laurent Pinchart Subject: Re: [PATCH v5 5/9] dmaengine: rcar-dmac: slave address are physical Date: Thu, 17 Mar 2016 13:30:20 +0200 Message-ID: <1661205.m6h487t3oE@avalon> In-Reply-To: <1457404974-1800-6-git-send-email-niklas.soderlund+renesas@ragnatech.se> References: <1457404974-1800-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> <1457404974-1800-6-git-send-email-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset="iso-8859-1" Sender: linux-arch-owner@vger.kernel.org List-ID: To: Niklas =?ISO-8859-1?Q?S=F6derlund?= Cc: vinod.koul@intel.com, linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, geert+renesas@glider.be, linus.walleij@linaro.org, dan.j.williams@intel.com, arnd@arndb.de, linux-arch@vger.kernel.org Message-ID: <20160317113020.QCG6nrS-zweGOjTtt8S29FCp06KFy1EYTYkzfyjPb7Y@z> Hi Niklas, Thank you for the patch. On Tuesday 08 March 2016 03:42:50 Niklas Söderlund wrote: > Slave addresses coming from a client is physical not dma. Store the > address using the correct data type. This is in preparation for hooking > up the dma-mapping API to the slave addresses. > > Signed-off-by: Niklas Söderlund > --- > drivers/dma/sh/rcar-dmac.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c > index 7820d07..01cf82f 100644 > --- a/drivers/dma/sh/rcar-dmac.c > +++ b/drivers/dma/sh/rcar-dmac.c > @@ -144,8 +144,8 @@ struct rcar_dmac_chan { > > unsigned int src_xfer_size; > unsigned int dst_xfer_size; > - dma_addr_t src_slave_addr; > - dma_addr_t dst_slave_addr; > + phys_addr_t src_slave_addr; > + phys_addr_t dst_slave_addr; This moves the cast from phys_addr_t to dma_addr_t from the driver's DMA engine operations to other places. I'm not sure there's much value in doing so. I'd squash this patch with 7/9, the result will be easier to review. > int mid_rid; > > spinlock_t lock; -- Regards, Laurent Pinchart