From f64dcac0b1247842db2530959cbe3df1cb1947c4 Mon Sep 17 00:00:00 2001
From: Mike Rapoport <mike@compulab.co.il>
Date: Tue, 24 Nov 2009 10:25:33 +0200
Subject: [PATCH] backlight: tdo24m: ensure chip select changes between
 transfers

Some SPI host drivers do not change chip select betwen transfers unless
.cs_chnage field is explicitly set. The LCD spec requires chip select
change between consecuitive transfers, so ensure it at the SPI driver
level.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
---
 drivers/video/backlight/tdo24m.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index bbfb502add671..4a3d46e08016c 100644
--- a/drivers/video/backlight/tdo24m.c
+++ b/drivers/video/backlight/tdo24m.c
@@ -367,6 +367,7 @@ static int __devinit tdo24m_probe(struct spi_device *spi)
 
 	spi_message_init(m);
 
+	x->cs_change = 1;
 	x->tx_buf = &lcd->buf[0];
 	spi_message_add_tail(x, m);
 
-- 
2.30.2