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util/nvmutil: reset errno if any MAC updated 

instead of setting errno in the for loop, set a variable
declaring that the mac was updated, and reset errno based
on that.

Signed-off-by: Leah Rowe <leah@libreboot.org>
master
Leah Rowe 2025-01-27 05:07:27 +00:00
parent 4ea5484e02
commit 43e583d0b9
1 changed files with 5 additions and 1 deletions
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6
util/nvmutil/nvmutil.c
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@ -246,18 +246,22 @@ readGbe(void)
void
cmd_setmac(void)
{
int mac_updated = 0;
parseMacString(strMac, mac);
for (int partnum = 0; partnum < 2; partnum++) {
if (!goodChecksum(part = partnum))
continue;
errno = 0;
mac_updated = 1;
for (int w = 0; w < 3; w++) /* write MAC to gbe part */
setWord(w, partnum, mac[w]);
cmd_setchecksum(); /* MAC updated; need valid checksum */
}
if (mac_updated)
errno = 0; /* reset in case one of the checksums failed */
}
/* parse MAC string, write to char buffer */