From patchwork Thu Sep 19 21:51:02 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 276391 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 244CA2C00AB for ; Fri, 20 Sep 2013 22:09:35 +1000 (EST) Received: from caramon.arm.linux.org.uk (caramon.arm.linux.org.uk [IPv6:2002:4e20:1eda::1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D89EA2C00BD for ; Fri, 20 Sep 2013 22:09:01 +1000 (EST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=caramon; h=Date:Sender:Message-Id:Subject:Cc:To:From:References:In-Reply-To; bh=O9ICSulsf0CqQpTlZvAPF4qLahkWOu3DZmWhQSohScU=; b=oFp76Vu//wDQQYXmiEmUSJdsFWRwLXiu32hnhjVZ/Nj9KUi9jQc7WpNbVBZn8AvUPWEOtKzLcZeo3DG6CQKjPddEK1rB4kqvBuMeikDSwc4SxT8FBkmer5uFIMaWpv9Zaxb/EooFy1ASmv8eeIeImmRy4RNpBRlA9M5vniCHPSE=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:59166 helo=rmk-PC.arm.linux.org.uk) by caramon.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1VMnLS-0000qF-GW; Fri, 20 Sep 2013 00:09:10 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1VMm7q-0007iO-68; Thu, 19 Sep 2013 22:51:02 +0100 In-Reply-To: <20130919212235.GD12758@n2100.arm.linux.org.uk> References: <20130919212235.GD12758@n2100.arm.linux.org.uk> From: Russell King To: alsa-devel@alsa-project.org, b43-dev@lists.infradead.org, devel@driverdev.osuosl.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, e1000-devel@lists.sourceforge.net, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-ide@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, Solarflare linux maintainers , uclinux-dist-devel@blackfin.uclinux.org Subject: [PATCH 26/51] DMA-API: usb: ohci-sa1111: add a note about DMA masks Message-Id: Date: Thu, 19 Sep 2013 22:51:02 +0100 Cc: Greg Kroah-Hartman , Alan Stern X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.16rc2 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add a comment to explain why this driver doesn't call any of the DMA API dma_set_mask() functions. Signed-off-by: Russell King --- drivers/usb/host/ohci-sa1111.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 17b2a7d..aa9e127 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -185,6 +185,12 @@ static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev) if (usb_disabled()) return -ENODEV; + /* + * We don't call dma_set_mask_and_coherent() here because the + * DMA mask has already been appropraitely setup by the core + * SA-1111 bus code (which includes bug workarounds.) + */ + hcd = usb_create_hcd(&ohci_sa1111_hc_driver, &dev->dev, "sa1111"); if (!hcd) return -ENOMEM;