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

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

Fixes: d096459494 ("net: lan966x: Add support for ptp clocks")
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Clément Léger 2023-01-09 16:32:23 +01:00 committed by David S. Miller
parent 0aa7d35f5d
commit b0e380b5d4
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/microchip/lan966x/lan966x_ptp.c
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@ -1073,6 +1073,9 @@ void lan966x_ptp_deinit(struct lan966x *lan966x)
struct lan966x_port *port; struct lan966x_port *port;
int i; int i;
if (!lan966x->ptp)
return;
for (i = 0; i < lan966x->num_phys_ports; i++) { for (i = 0; i < lan966x->num_phys_ports; i++) {
port = lan966x->ports[i]; port = lan966x->ports[i];
if (!port) if (!port)