diff options
| -rw-r--r-- | src/soc/amd/common/block/spi/fch_spi_flash.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/soc/amd/common/block/spi/fch_spi_flash.c b/src/soc/amd/common/block/spi/fch_spi_flash.c index d8eeefc7ed..b05c1a4a14 100644 --- a/src/soc/amd/common/block/spi/fch_spi_flash.c +++ b/src/soc/amd/common/block/spi/fch_spi_flash.c @@ -40,7 +40,8 @@ int fch_spi_flash_cmd_write(const u8 *cmd, size_t cmd_len, const void *data, siz int ret; u8 buff[SPI_FIFO_DEPTH + 1]; - if ((cmd_len + data_len) > SPI_FIFO_DEPTH) + /* Ensure FIFO is large enough. First byte of command does not go in the FIFO. */ + if ((cmd_len - 1 + data_len) > SPI_FIFO_DEPTH) return -1; memcpy(buff, cmd, cmd_len); memcpy(buff + cmd_len, data, data_len); |