ARM: davinci: da8xx_register_spi() should not register SPI board info

Without this patch, da8xx_register_spi() registers the SPI board info,
the SPI controller, and sets its number of chipselect to the size of the
static spi_board_info array. This is bad because a SPI board info may
declare devices for different SPI buses, and because other code can also
call spi_register_board_info() (e.g. a daughter board might provide
additional SPI devices).

This patch removes the spi_register_board_info() call from
da8xx_register_spi(), renames this last one to da8xx_register_spi_bus()
to be more explicit, takes the number of chipselect as a function
parameter, and updates the impacted board-da8{3,5}0-evm.c, and
board-mityomapl138.c files accordingly. It also sets the SPI platform
data static, as it doesn't need to be exported.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
[nsekhar@ti.com: fixed conflicts with v3.7-rc7, converted to use pr_warn(),
modified print messages to use __func__]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

1 files changed, 3 insertions, 11 deletions

diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 2d5502d84a22..30da05f22ef4 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -832,7 +832,7 @@ static struct resource da8xx_spi1_resources[] = {
 	},
 };
 
-struct davinci_spi_platform_data da8xx_spi_pdata[] = {
+static struct davinci_spi_platform_data da8xx_spi_pdata[] = {
 	[0] = {
 		.version	= SPI_VERSION_2,
 		.intr_line	= 1,
@@ -866,20 +866,12 @@ static struct platform_device da8xx_spi_device[] = {
 	},
 };
 
-int __init da8xx_register_spi(int instance, const struct spi_board_info *info,
-			      unsigned len)
+int __init da8xx_register_spi_bus(int instance, unsigned num_chipselect)
 {
-	int ret;
-
 	if (instance < 0 || instance > 1)
 		return -EINVAL;
 
-	ret = spi_register_board_info(info, len);
-	if (ret)
-		pr_warning("%s: failed to register board info for spi %d :"
-			   " %d\n", __func__, instance, ret);
-
-	da8xx_spi_pdata[instance].num_chipselect = len;
+	da8xx_spi_pdata[instance].num_chipselect = num_chipselect;
 
 	if (instance == 1 && cpu_is_davinci_da850()) {
 		da8xx_spi1_resources[0].start = DA850_SPI1_BASE;