Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752910AbaKGOPM (ORCPT ); Fri, 7 Nov 2014 09:15:12 -0500 Received: from fw-tnat.cambridge.arm.com ([217.140.96.21]:54177 "EHLO cam-smtp0.cambridge.arm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752791AbaKGOPF (ORCPT ); Fri, 7 Nov 2014 09:15:05 -0500 Message-ID: <545CD3CB.7090909@arm.com> Date: Fri, 07 Nov 2014 14:14:35 +0000 From: Andrew Jackson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Russell King , Greg Kroah-Hartman , Jiri Slaby , linux-serial@vger.kernel.org, "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: [PATCH 1/5] serial: pl011: Allocate TX DMA buffer from DMA capable memory Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allocating with __GFP_DMA avoids the need for bounce buffers Signed-off-by: Andrew Jackson --- drivers/tty/serial/amba-pl011.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 8572f2a..a285196 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -987,7 +987,7 @@ static void pl011_dma_startup(struct uart_amba_port *uap) if (!uap->dmatx.chan) return; - uap->dmatx.buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL); + uap->dmatx.buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL | __GFP_DMA); if (!uap->dmatx.buf) { dev_err(uap->port.dev, "no memory for DMA TX buffer\n"); uap->port.fifosize = uap->fifosize; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/