octeontx2-af: Increase link credit restore polling timeout

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@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 4e79e91..58e2aee 100644 (file)
--- 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 de6e5a1..97fb619 100644 (file)
--- 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))