linux-kernel - [PATCH] serial:ifx6x60:Keep word size accordance with SPI controller

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Date:	Wed, 12 Dec 2012 13:07:06 +0800
From:	chao bi <chao.bi@...el.com>
To:	Alan Cox <alan@...ux.intel.com>
Cc:	richardx.r.gorby@...el.com, jun.d.chen@...el.com,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] serial:ifx6x60:Keep word size accordance with SPI
 controller


As protocol driver, IFX SPI driver initiate to setup SPI master with default
SPI word size as 16 bit/word, however, SPI master may not adopt this default
value due to SPI controller's capability, it might choose an available value by
itself and set it to spi_device.bits_per_word. In order to keep align with
Controller, IFX driver should make use of this value during SPI transfer,
but the default one.

Signed-off-by: Chen Jun <jun.d.chen@...el.com>
Signed-off-by: channing <chao.bi@...el.com>
---
 drivers/tty/serial/ifx6x60.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 675d94a..5919992 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -810,7 +810,8 @@ static void ifx_spi_io(unsigned long data)
 		ifx_dev->spi_xfer.cs_change = 0;
 		ifx_dev->spi_xfer.speed_hz = ifx_dev->spi_dev->max_speed_hz;
 		/* ifx_dev->spi_xfer.speed_hz = 390625; */
-		ifx_dev->spi_xfer.bits_per_word = spi_bpw;
+		ifx_dev->spi_xfer.bits_per_word =
+		ifx_dev->spi_dev->bits_per_word;
 
 		ifx_dev->spi_xfer.tx_buf = ifx_dev->tx_buffer;
 		ifx_dev->spi_xfer.rx_buf = ifx_dev->rx_buffer;
-- 
1.7.1



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