crypto: caam/qi - fix error handling in ERN handler

ERN handler calls the caam/qi frontend "done" callback with a status
of -EIO. This is incorrect, since the callback expects a status value
meaningful for the crypto engine - hence the cryptic messages
like the one below:
platform caam_qi: 15: unknown error source

Fix this by providing the callback with:
-the status returned by the crypto engine (fd[status]) in case
it contains an error, OR
-a QI "No error" code otherwise; this will trigger the message:
platform caam_qi: 50000000: Queue Manager Interface: No error
which is fine, since QMan driver provides details about the cause of
failure

Cc: <stable@vger.kernel.org> # v5.1+
Fixes: 67c2315def06 ("crypto: caam - add Queue Interface (QI) backend support")
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/crypto/caam/error.c b/drivers/crypto/caam/error.c
index 4f0d45865aa2..95da6ae43482 100644
--- a/drivers/crypto/caam/error.c
+++ b/drivers/crypto/caam/error.c
@@ -118,6 +118,7 @@ static const struct {
 	u8 value;
 	const char *error_text;
 } qi_error_list[] = {
+	{ 0x00, "No error" },
 	{ 0x1F, "Job terminated by FQ or ICID flush" },
 	{ 0x20, "FD format error"},
 	{ 0x21, "FD command format error"},