[PATCH net-next] octeontx2: use dev_err_probe() for deferred probe

[Juuso Rinta <juuso.rinta@nokia.com>]

The PF and VF drivers warn and return -EPROBE_DEFER when the AF has
not programmed the RVUM revision or does not answer the mailbox READY
message. That is expected until rvu_af has finished initializing, so
the warning is repeated on every deferred retry.

Use dev_err_probe() instead of dev_warn() so the expected deferral is
not printed at warning level. -EPROBE_DEFER is logged at debug level
and the reason is recorded in devices_deferred.

Signed-off-by: Juuso Rinta <juuso.rinta@nokia.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 11 ++++-------
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c |  5 ++---
 2 files changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index c995f2900..529040f3e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -1167,10 +1167,9 @@ int otx2_register_mbox_intr(struct otx2_nic *pf, bool probe_af)
 	}
 	err = otx2_sync_mbox_msg(&pf->mbox);
 	if (err) {
-		dev_warn(pf->dev,
-			 "AF not responding to mailbox, deferring probe\n");
 		otx2_disable_mbox_intr(pf);
-		return -EPROBE_DEFER;
+		return dev_err_probe(pf->dev, -EPROBE_DEFER,
+			 "AF not responding to mailbox, deferring probe\n");
 	}
 
 	return 0;
@@ -2993,11 +2992,9 @@ int otx2_check_pf_usable(struct otx2_nic *nic)
 	 * otherwise this driver probe should be deferred
 	 * until AF driver comes up.
 	 */
-	if (!rev) {
-		dev_warn(nic->dev,
+	if (!rev)
+		return dev_err_probe(nic->dev, -EPROBE_DEFER,
 			 "AF is not initialized, deferring probe\n");
-		return -EPROBE_DEFER;
-	}
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index fcdf891f9..a02267978 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -297,10 +297,9 @@ static int otx2vf_register_mbox_intr(struct otx2_nic *vf, bool probe_pf)
 
 	err = otx2_sync_mbox_msg(&vf->mbox);
 	if (err) {
-		dev_warn(vf->dev,
-			 "AF not responding to mailbox, deferring probe\n");
 		otx2vf_disable_mbox_intr(vf);
-		return -EPROBE_DEFER;
+		return dev_err_probe(vf->dev, -EPROBE_DEFER,
+			 "AF not responding to mailbox, deferring probe\n");
 	}
 	return 0;
 }

---
base-commit: 25c1f6111034aef7fc06cfbdcf1e4f0d6e5ee74b
change-id: 20260831-octeontx2-dev-err-probe-9ff7be8b5e6c

Best regards,
--  
Juuso Rinta <juuso.rinta@nokia.com>