linux-kernel - [PATCH 2/6] serial: ifx6x60: dma_alloc

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Message-Id: <1297108952-27371-3-git-send-email-russ.gorby@intel.com>
Date:	Mon,  7 Feb 2011 12:02:28 -0800
From:	Russ Gorby <russ.gorby@...el.com>
To:	Russ Gorby <russ.gorby@...el.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org
Cc:	suhail.ahmed@...el.com
Subject: [PATCH 2/6] serial: ifx6x60: dma_alloc_coherent must use parent dev

This driver is a SPI protocol driver and has no DMA ops
associated with the device so the call will fail. Furthermore,
the DMA allocation made here will be used by the SPI
controller driver (parent dev) so it makes sense to
pass that device instead.

Signed-off-by: Russ Gorby <russ.gorby@...el.com>
---
 drivers/tty/serial/ifx6x60.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 972c04d..bb2ff20 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -998,7 +998,7 @@ static int ifx_spi_spi_probe(struct spi_device *spi)
 	ifx_dev->spi_slave_cts = 0;
 
 	/*initialize transfer and dma buffers */
-	ifx_dev->tx_buffer = dma_alloc_coherent(&ifx_dev->spi_dev->dev,
+	ifx_dev->tx_buffer = dma_alloc_coherent(ifx_dev->spi_dev->dev.parent,
 				IFX_SPI_TRANSFER_SIZE,
 				&ifx_dev->tx_bus,
 				GFP_KERNEL);
@@ -1007,7 +1007,7 @@ static int ifx_spi_spi_probe(struct spi_device *spi)
 		ret = -ENOMEM;
 		goto error_ret;
 	}
-	ifx_dev->rx_buffer = dma_alloc_coherent(&ifx_dev->spi_dev->dev,
+	ifx_dev->rx_buffer = dma_alloc_coherent(ifx_dev->spi_dev->dev.parent,
 				IFX_SPI_TRANSFER_SIZE,
 				&ifx_dev->rx_bus,
 				GFP_KERNEL);
-- 
1.7.3.4

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