From: Subbaraya Sundeep Date: Fri, 21 Jan 2022 06:34:46 +0000 (+0530) Subject: octeontx2-pf: Forward error codes to VF X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=437b6b3bd88ca698dca10747d85480a74f6d15ca;p=linux.git octeontx2-pf: Forward error codes to VF [ Upstream commit a8db854be28622a2477cb21cdf7f829adbb2c42d ] PF forwards its VF messages to AF and corresponding replies from AF to VF. AF sets proper error code in the replies after processing message requests. Currently PF checks the error codes in replies and sends invalid message to VF. This way VF lacks the information of error code set by AF for its messages. This patch changes that such that PF simply forwards AF replies so that VF can handle error codes. Fixes: d424b6c02415 ("octeontx2-pf: Enable SRIOV and added VF mbox handling") Signed-off-by: Subbaraya Sundeep Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c index 53a3e8de1a51e..b1894d4045b8d 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c @@ -386,7 +386,12 @@ static int otx2_forward_vf_mbox_msgs(struct otx2_nic *pf, dst_mdev->msg_size = mbox_hdr->msg_size; dst_mdev->num_msgs = num_msgs; err = otx2_sync_mbox_msg(dst_mbox); - if (err) { + /* Error code -EIO indicate there is a communication failure + * to the AF. Rest of the error codes indicate that AF processed + * VF messages and set the error codes in response messages + * (if any) so simply forward responses to VF. + */ + if (err == -EIO) { dev_warn(pf->dev, "AF not responding to VF%d messages\n", vf); /* restore PF mbase and exit */