of: assume big-endian properties, adding conversions where necessary
Properties in the device tree are specified as big-endian. At present,
the only platforms to support device trees are also big-endian, so we've
been acessing the properties as raw values.
We'd like to add device tree support to little-endian platforms too, so
add endian conversion to the sites where we access property values in
the common of code.
Compiled on powerpc (ppc44x_defconfig & ppc64_defconfig) and arm (fdt
support only for now).
Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/of/of_spi.c b/drivers/of/of_spi.c
index bed0ed6..f65f48b 100644
--- a/drivers/of/of_spi.c
+++ b/drivers/of/of_spi.c
@@ -23,7 +23,7 @@
{
struct spi_device *spi;
struct device_node *nc;
- const u32 *prop;
+ const __be32 *prop;
int rc;
int len;
@@ -54,7 +54,7 @@
spi_dev_put(spi);
continue;
}
- spi->chip_select = *prop;
+ spi->chip_select = be32_to_cpup(prop);
/* Mode (clock phase/polarity/etc.) */
if (of_find_property(nc, "spi-cpha", NULL))
@@ -72,7 +72,7 @@
spi_dev_put(spi);
continue;
}
- spi->max_speed_hz = *prop;
+ spi->max_speed_hz = be32_to_cpup(prop);
/* IRQ */
spi->irq = irq_of_parse_and_map(nc, 0);