This is a note to let you know that I've just added the patch titled
octeontx2-af: Increase link credit restore polling timeout
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
octeontx2-af-increase-link-credit-restore-polling-ti.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 12d0b60209df36f671ab657280bea5256434de71
Author: Geetha sowjanya <gakula@xxxxxxxxxxx>
Date: Fri Jan 21 12:04:44 2022 +0530
octeontx2-af: Increase link credit restore polling timeout
[ Upstream commit 1581d61b42d985cefe7b71eea67ab3bfcbf34d0f ]
It's been observed that sometimes link credit restore takes
a lot of time than the current timeout. This patch increases
the default timeout value and return the proper error value
on failure.
Fixes: 1c74b89171c3 ("octeontx2-af: Wait for TX link idle for credits change")
Signed-off-by: Geetha sowjanya <gakula@xxxxxxxxxxx>
Signed-off-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Signed-off-by: Sunil Goutham <sgoutham@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 4e79e918a1617..58e2aeebc14f8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -732,6 +732,7 @@ enum nix_af_status {
NIX_AF_ERR_BANDPROF_INVAL_REQ = -428,
NIX_AF_ERR_CQ_CTX_WRITE_ERR = -429,
NIX_AF_ERR_AQ_CTX_RETRY_WRITE = -430,
+ NIX_AF_ERR_LINK_CREDITS = -431,
};
/* For NIX RX vtag action */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index de6e5a1288640..97fb61915379a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -3891,8 +3891,8 @@ nix_config_link_credits(struct rvu *rvu, int blkaddr, int link,
NIX_AF_TL1X_SW_XOFF(schq), BIT_ULL(0));
}
- rc = -EBUSY;
- poll_tmo = jiffies + usecs_to_jiffies(10000);
+ rc = NIX_AF_ERR_LINK_CREDITS;
+ poll_tmo = jiffies + usecs_to_jiffies(200000);
/* Wait for credits to return */
do {
if (time_after(jiffies, poll_tmo))
