[PATCH net v2] net: airoha: Always check return value from airoha_ppe_foe_get_entry()

[Lorenzo Bianconi]

airoha_ppe_foe_get_entry routine can return NULL, so check the returned
pointer is not NULL in airoha_ppe_foe_flow_l2_entry_update()

Fixes: b81e0f2b58be3 ("net: airoha: Add FLOW_CLS_STATS callback support")
Reviewed-by: Simon Horman <horms at kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
Changes in v2:
- Target net tree instead of net-next one.
---
 drivers/net/ethernet/airoha/airoha_ppe.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c
index 9067d2fc7706ecf489bee9fc9b6425de18acb634..0e217acfc5ef748453b020e5713ace1910abc4a8 100644
--- a/drivers/net/ethernet/airoha/airoha_ppe.c
+++ b/drivers/net/ethernet/airoha/airoha_ppe.c
@@ -809,8 +809,10 @@ airoha_ppe_foe_flow_l2_entry_update(struct airoha_ppe *ppe,
 		int idle;
 
 		hwe = airoha_ppe_foe_get_entry(ppe, iter->hash);
-		ib1 = READ_ONCE(hwe->ib1);
+		if (!hwe)
+			continue;
 
+		ib1 = READ_ONCE(hwe->ib1);
 		state = FIELD_GET(AIROHA_FOE_IB1_BIND_STATE, ib1);
 		if (state != AIROHA_FOE_STATE_BIND) {
 			iter->hash = 0xffff;

---
base-commit: 0aff00432cc755ad7713f8a2f305395d443cdd4c
change-id: 20250618-check-ret-from-airoha_ppe_foe_get_entry-f0f1838641df

Best regards,
-- 
Lorenzo Bianconi <lorenzo at kernel.org>