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authorEddie James <eajames@linux.ibm.com>2022-04-26 18:49:55 +0300
committerJoel Stanley <joel@jms.id.au>2022-09-27 10:27:17 +0300
commit7326939faa4b8d078dd2b8cddc36b5758d9b984c (patch)
tree7497e7463d3afba847aee2bbd0249f443244dd52 /drivers/fsi
parentf157555ea3b0f1f7ff19ca7d52576ab231fabfad (diff)
downloadlinux-7326939faa4b8d078dd2b8cddc36b5758d9b984c.tar.xz
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>
Diffstat (limited to 'drivers/fsi')
-rw-r--r--drivers/fsi/fsi-occ.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/fsi/fsi-occ.c b/drivers/fsi/fsi-occ.c
index c9cc75fbdfb9..3d04e8baecbb 100644
--- a/drivers/fsi/fsi-occ.c
+++ b/drivers/fsi/fsi-occ.c
@@ -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;