[PATCH 38/39] spi: pl022: use DMA by default when probing from DT

[Linus Walleij]

From: Linus Walleij <linus.walleij at linaro.org>

In the past we controlled the selection of DMA for a certain
host by a boolean switch in the platform data. Currently
there is no way to enable DMA on a PL022 probed from the
device tree. Let's default to trying to obtain DMA channels
in the DT case, and then we can always fail (and thus fall
back to PIO mode).

Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
---
 drivers/spi/spi-pl022.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 371cc66f..3b24654 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -2083,6 +2083,7 @@ pl022_platform_data_dt_get(struct device *dev)
 	}
 
 	pd->bus_id = -1;
+	pd->enable_dma = 1;
 	of_property_read_u32(np, "num-cs", &tmp);
 	pd->num_chipselect = tmp;
 	of_property_read_u32(np, "pl022,autosuspend-delay",
-- 
1.7.11.3