[PATCH] net: lan966x: check for ptp to be enabled in lan966x_ptp_deinit()

Clément Léger
2023-01-06T13:46:38Z

If ptp was not enabled due to missing IRQ for instance,
lan966x_ptp_deinit() will dereference NULL pointers.

Fixes: d096459494a8 ("net: lan966x: Add support for ptp clocks")
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
---
drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
index f9ebfaafbebc..a8348437dd87 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
@@ -1073,6 +1073,9 @@ void lan966x_ptp_deinit(struct lan966x *lan966x)
struct lan966x_port *port;
int i;

+ if (!lan966x->ptp)
+ return;
+
for (i = 0; i < lan966x->num_phys_ports; i++) {
port = lan966x->ports[i];
if (!port)
--
2.38.1