diff options
| -rw-r--r-- | dediprog.c | 10 |
1 files changed, 9 insertions, 1 deletions
@@ -362,7 +362,15 @@ static int dediprog_set_spi_speed(unsigned int spispeed_idx) static int prepare_rw_cmd( struct flashctx *const flash, uint8_t *data_packet, unsigned int count, - uint8_t dedi_spi_cmd, unsigned int *value, unsigned int *idx, unsigned int start, int is_read) { + uint8_t dedi_spi_cmd, unsigned int *value, unsigned int *idx, unsigned int start, int is_read) +{ + if (count >= 1 << 16) { + msg_perr("%s: Unsupported transfer length of %u blocks! " + "Please report a bug at flashrom@flashrom.org\n", + __func__, count); + return 1; + } + /* First 5 bytes are common in both generations. */ data_packet[0] = count & 0xff; data_packet[1] = (count >> 8) & 0xff; |