diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/nvmutil/nvmutil.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c index 9e4f4d01..dabf8e83 100644 --- a/util/nvmutil/nvmutil.c +++ b/util/nvmutil/nvmutil.c @@ -547,11 +547,20 @@ cmd_setchecksum(void) static void cmd_brick(void) { - if (!good_checksum(part)) - err(ECANCELED, "brick p%d, file '%s'", part, fname); + uint16_t checksum_word; - set_word(NVM_CHECKSUM_WORD, part, - ((word(NVM_CHECKSUM_WORD, part)) ^ 0xFF)); + if (!good_checksum(part)) { + err(ECANCELED, + "Part %d checksum already invalid in file '%s'", + part, fname); + } + + /* + * We know checksum_word is valid, so we need only + * flip one bit to invalidate it. + */ + checksum_word = word(NVM_CHECKSUM_WORD, part); + set_word(NVM_CHECKSUM_WORD, part, checksum_word ^ 1); } static void |