backlight: tdo24m: ensure chip select changes between transfers
authorMike Rapoport <mike@compulab.co.il>
Tue, 24 Nov 2009 08:25:33 +0000 (10:25 +0200)
committerEric Miao <eric.y.miao@gmail.com>
Tue, 1 Dec 2009 01:02:34 +0000 (09:02 +0800)
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

index bbfb502add6717832a6675883be3722afd879907..4a3d46e08016cc9ff49100f51574d67850249db2 100644 (file)
@@ -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);