From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753573AbbBZHFQ (ORCPT ); Thu, 26 Feb 2015 02:05:16 -0500 Received: from nasmtp02.atmel.com ([204.2.163.16]:30946 "EHLO SJOEDG01.corp.atmel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753245AbbBZHFM (ORCPT ); Thu, 26 Feb 2015 02:05:12 -0500 From: Leilei Zhao To: , , , CC: , , Leilei Zhao Subject: [PATCH 2/5] tty/serial: at91: correct buffer size used in DMA Date: Thu, 26 Feb 2015 14:55:22 +0800 Message-ID: <1424933725-16242-3-git-send-email-leilei.zhao@atmel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1424933725-16242-1-git-send-email-leilei.zhao@atmel.com> References: <1424933725-16242-1-git-send-email-leilei.zhao@atmel.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The buffer size set in DMA is inconsistent with its allocation. So keep them consistent here. The structure atmel_uart_char is used in PIO mode with its meaning. But here in DMA, all of the buffer is treated as general char. Signed-off-by: Leilei Zhao Acked-by: Nicolas Ferre --- drivers/tty/serial/atmel_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 460903c..6a4d44d 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -1030,7 +1030,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port) BUG_ON((int)ring->buf & ~PAGE_MASK); sg_set_page(&atmel_port->sg_rx, virt_to_page(ring->buf), - ATMEL_SERIAL_RINGSIZE, + sizeof(struct atmel_uart_char) * ATMEL_SERIAL_RINGSIZE, (int)ring->buf & ~PAGE_MASK); nent = dma_map_sg(port->dev, &atmel_port->sg_rx, -- 1.7.9.5