This patch applies to 2.6.34.7 (already included in 2.6.35.4)
It fixes an issue when sending only or receiving only (mspi->tx-dma was reset
as when no tx_buf is defined, tx_dma is 0)
Signed-off-by: christophe leroy <christophe.le...@c-s.fr>
diff -urN a/drivers/spi/spi_mpc8xxx.c b/drivers/spi/spi_mpc8xxx.c
--- a/drivers/spi/spi_mpc8xxx.c 2010-09-08 16:42:30.000000000 +0200
+++ b/drivers/spi/spi_mpc8xxx.c 2010-09-08 16:43:50.000000000 +0200
@@ -438,7 +438,7 @@
dev_err(dev, "unable to map tx dma\n");
return -ENOMEM;
}
- } else {
+ } else if (t->tx_buf) {
mspi->tx_dma = t->tx_dma;
}
@@ -449,7 +449,7 @@
dev_err(dev, "unable to map rx dma\n");
goto err_rx_dma;
}
- } else {
+ } else if (t->rx_buf) {
mspi->rx_dma = t->rx_dma;
}
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