From: Mark Spender <mspen...@solarflare.com>
With MCDIv2, the reponse length can be to big to fit into the
CMDDONE_DATALEN field in the MCDI completion event. But rather that
the length being truncated, it can overflow into the CMDDONE_ERRNO
field (this is a longstanding firmware bug). Hence the CMDDONE_ERRNO
field may not be valid.
It isn't necessary to use the value in the CMDDONE_ERRNO field though,
so it can be ignored. The actual error code is already read from the
response header on MCDIv2 capable hardware and stored in emr_rc, so
that can be used instead.
Signed-off-by: Mark Spender <mspen...@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybche...@solarflare.com>
---
drivers/net/sfc/base/efx_mcdi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/sfc/base/efx_mcdi.c b/drivers/net/sfc/base/efx_mcdi.c
index 888a47b..936ad25 100644
--- a/drivers/net/sfc/base/efx_mcdi.c
+++ b/drivers/net/sfc/base/efx_mcdi.c
@@ -793,9 +793,8 @@ efx_mcdi_ev_cpl(
emrp->emr_rc = 0;
}
}
- if (errcode == 0) {
+ if (emrp->emr_rc == 0)
efx_mcdi_finish_response(enp, emrp);
- }
emtp->emt_ev_cpl(emtp->emt_context);
}
--
2.7.4
