Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752687AbbGWJLW (ORCPT ); Thu, 23 Jul 2015 05:11:22 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:53995 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752331AbbGWJLM (ORCPT ); Thu, 23 Jul 2015 05:11:12 -0400 X-Listener-Flag: 11101 From: Leilk Liu To: Mark Brown CC: Mark Rutland , Matthias Brugger , Sascha Hauer , , , , , , Leilk Liu Subject: [PATCH v3 1/4] spi: support spi without dma channel to use can_dma() Date: Thu, 23 Jul 2015 17:10:40 +0800 Message-ID: <1437642643-11966-2-git-send-email-leilk.liu@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1437642643-11966-1-git-send-email-leilk.liu@mediatek.com> References: <1437642643-11966-1-git-send-email-leilk.liu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1765 Lines: 57 For spi without dma channel and use can_dma(), it can use master->dev for struct device. Change-Id: I5b320e1742767c2ea4368410fb49c6679e28af6b Signed-off-by: Leilk Liu --- drivers/spi/spi.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index cf8b91b..f725085 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -539,8 +539,15 @@ static int __spi_map_msg(struct spi_master *master, struct spi_message *msg) if (!master->can_dma) return 0; - tx_dev = master->dma_tx->device->dev; - rx_dev = master->dma_rx->device->dev; + if (master->dma_tx) + tx_dev = master->dma_tx->device->dev; + else + tx_dev = &master->dev; + + if (master->dma_rx) + rx_dev = master->dma_rx->device->dev; + else + rx_dev = &master->dev; list_for_each_entry(xfer, &msg->transfers, transfer_list) { if (!master->can_dma(master, msg->spi, xfer)) @@ -579,8 +586,15 @@ static int __spi_unmap_msg(struct spi_master *master, struct spi_message *msg) if (!master->cur_msg_mapped || !master->can_dma) return 0; - tx_dev = master->dma_tx->device->dev; - rx_dev = master->dma_rx->device->dev; + if (master->dma_tx) + tx_dev = master->dma_tx->device->dev; + else + tx_dev = &master->dev; + + if (master->dma_rx) + rx_dev = master->dma_rx->device->dev; + else + rx_dev = &master->dev; list_for_each_entry(xfer, &msg->transfers, transfer_list) { if (!master->can_dma(master, msg->spi, xfer)) -- 1.8.1.1.dirty -- 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/