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>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/spi/spi-ppc4xx.c b/drivers/spi/spi-ppc4xx.c
index d95d307a1100..75ac9d48ef46 100644
--- a/drivers/spi/spi-ppc4xx.c
+++ b/drivers/spi/spi-ppc4xx.c
@@ -466,9 +466,6 @@ static int __init spi_ppc4xx_of_probe(struct platform_device *op)
         bbp->master->setup = spi_ppc4xx_setup;
         bbp->master->cleanup = spi_ppc4xx_cleanup;
 
-        /* Allocate bus num dynamically. */
-        bbp->master->bus_num = -1;
-
         /* the spi->mode bits understood by this driver: */
         bbp->master->mode_bits =
                 SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LSB_FIRST;