From ffd4db9e10fdb431b559af052c17015682bbe2aa Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Tue, 31 Oct 2017 12:49:06 -0700 Subject: spi: imx: Don't require platform data chipselect array If the array is not present, assume all chip selects are native. This is the standard behavior for SPI masters configured via the device tree and the behavior of this driver as well when it is configured via device tree. This reduces platform data vs DT differences and allows most of the platform data based boards to remove their chip select arrays. CC: Shawn Guo CC: Sascha Hauer CC: Fabio Estevam CC: Mark Brown Signed-off-by: Trent Piepho Signed-off-by: Mark Brown --- drivers/spi/spi-imx.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index fdbbdac66839..79ddefe4180d 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1526,13 +1526,15 @@ static int spi_imx_probe(struct platform_device *pdev) /* Get number of chip selects, either platform data or OF */ if (mxc_platform_info) { master->num_chipselect = mxc_platform_info->num_chipselect; - master->cs_gpios = devm_kzalloc(&master->dev, - sizeof(int) * master->num_chipselect, GFP_KERNEL); - if (!master->cs_gpios) - return -ENOMEM; - - for (i = 0; i < master->num_chipselect; i++) - master->cs_gpios[i] = mxc_platform_info->chipselect[i]; + if (mxc_platform_info->chipselect) { + master->cs_gpios = devm_kzalloc(&master->dev, + sizeof(int) * master->num_chipselect, GFP_KERNEL); + if (!master->cs_gpios) + return -ENOMEM; + + for (i = 0; i < master->num_chipselect; i++) + master->cs_gpios[i] = mxc_platform_info->chipselect[i]; + } } else { u32 num_cs; -- cgit v1.2.3