diff options
| -rw-r--r-- | src/drivers/spi/spi-generic.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/drivers/spi/spi-generic.c b/src/drivers/spi/spi-generic.c index 116daf9088..9796663da2 100644 --- a/src/drivers/spi/spi-generic.c +++ b/src/drivers/spi/spi-generic.c @@ -98,8 +98,14 @@ unsigned int spi_crop_chunk(const struct spi_slave *slave, unsigned int cmd_len, if (deduct_opcode_len) cmd_len--; - if (deduct_cmd_len && (ctrlr_max > cmd_len)) - ctrlr_max -= cmd_len; + if (deduct_cmd_len) { + if (ctrlr_max >= cmd_len) { + ctrlr_max -= cmd_len; + } else { + ctrlr_max = 0; + printk(BIOS_WARNING, "%s: Command longer than buffer\n", __func__); + } + } return MIN(ctrlr_max, buf_len); } |