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authorJeremy Kerr <jeremy.kerr@canonical.com>2010-01-30 01:45:26 -0700
committerGrant Likely <grant.likely@secretlab.ca>2010-02-09 08:34:10 -0700
commit337148812f97368a8ec4a69f1691e4c5ce3af494 (patch)
tree3fa2e5477c657cb2ebc40db9182d0989a5d60e13 /drivers/of/of_spi.c
parent2e89e685a8fd0e8334de967739d11e2e28c1a4dd (diff)
downloadlwn-337148812f97368a8ec4a69f1691e4c5ce3af494.tar.gz
lwn-337148812f97368a8ec4a69f1691e4c5ce3af494.zip
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>
Diffstat (limited to 'drivers/of/of_spi.c')
-rw-r--r--drivers/of/of_spi.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/of/of_spi.c b/drivers/of/of_spi.c
index bed0ed6dcdc1..f65f48b98448 100644
--- a/drivers/of/of_spi.c
+++ b/drivers/of/of_spi.c
@@ -23,7 +23,7 @@ void of_register_spi_devices(struct spi_master *master, struct device_node *np)
{
struct spi_device *spi;
struct device_node *nc;
- const u32 *prop;
+ const __be32 *prop;
int rc;
int len;
@@ -54,7 +54,7 @@ void of_register_spi_devices(struct spi_master *master, struct device_node *np)
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 @@ void of_register_spi_devices(struct spi_master *master, struct device_node *np)
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);