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fsi: occ: Fix checksum failure mode 

Change the checksum errno to something different than the errno
used for a bad SBE message. In addition, don't set the user's
response length to the data length in this case, since it's not
SBE FFDC.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20220426154956.27205-2-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Eddie James 2022-04-26 10:49:55 -05:00 committed by Joel Stanley
parent f157555ea3
commit 7326939faa
1 changed files with 5 additions and 2 deletions
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7
drivers/fsi/fsi-occ.c
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@ -246,7 +246,7 @@ static int occ_verify_checksum(struct occ *occ, struct occ_response *resp,
if (checksum != checksum_resp) {
dev_err(occ->dev, "Bad checksum: %04x!=%04x\n", checksum,
checksum_resp);
return -EBADMSG;
return -EBADE;
}
return 0;
@ -575,8 +575,11 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
dev_dbg(dev, "resp_status=%02x resp_data_len=%d\n",
resp->return_status, resp_data_length);
occ->client_response_size = resp_data_length + 7;
rc = occ_verify_checksum(occ, resp, resp_data_length);
if (rc)
goto done;
occ->client_response_size = resp_data_length + 7;
done:
*resp_len = occ->client_response_size;