diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-xilinx.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c index 337fda4..2ca55f6 100644 --- a/drivers/spi/spi-xilinx.c +++ b/drivers/spi/spi-xilinx.c @@ -22,6 +22,8 @@ #include <linux/spi/xilinx_spi.h> #include <linux/io.h> +#define XILINX_SPI_MAX_CS 32 + #define XILINX_SPI_NAME "xilinx_spi" /* Register definitions as per "OPB Serial Peripheral Interface (SPI) (v1.00e) @@ -347,6 +349,11 @@ static int xilinx_spi_probe(struct platform_device *pdev) return -EINVAL; } + if (num_cs > XILINX_SPI_MAX_CS) { + dev_err(&pdev->dev, "Invalid number of spi slaves\n"); + return -EINVAL; + } + master = spi_alloc_master(&pdev->dev, sizeof(struct xilinx_spi)); if (!master) return -ENODEV; |
