spi: By default setup spi_masters with 1 chipselect and dynamics bus number
Trivial simplification. Instead of requiring spi master drivers to
always set the bus number (even when a dynamic number is desired),
this patch modifies spi_alloc_master() to initialize num_chipselect to
1 (because there will always be at least one CS) and bus_num to -1 for
dynamic allocation. This simplifies the code needed to be written for
drivers.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 2d65b16..1041cb8 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -936,6 +936,8 @@
return NULL;
device_initialize(&master->dev);
+ master->bus_num = -1;
+ master->num_chipselect = 1;
master->dev.class = &spi_master_class;
master->dev.parent = get_device(dev);
spi_master_set_devdata(master, &master[1]);