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Date:	Tue, 24 Nov 2009 10:25:33 +0200
From:	Mike Rapoport <>
To:	Richard Purdie <>
Cc:	Eric Miao <>,,
	Mike Rapoport <>
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

Signed-off-by: Mike Rapoport <>
 drivers/video/backlight/tdo24m.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index bbfb502..4a3d46e 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)
+	x->cs_change = 1;
 	x->tx_buf = &lcd->buf[0];
 	spi_message_add_tail(x, m);

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