ixgbe: fix uninitialized event.type in ixgbe_ptp_check_pps_event

This patch fixes a bug in ixgbe_ptp_check_pps_event where the type was
uninitialized and could cause unknown event outcomes.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
index 842ba15550a5..01d99af0b9ba 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
@@ -387,6 +387,15 @@ void ixgbe_ptp_check_pps_event(struct ixgbe_adapter *adapter, u32 eicr)
         struct ixgbe_hw *hw = &adapter->hw;
         struct ptp_clock_event event;
 
+        event.type = PTP_CLOCK_PPS;
+
+        /* this check is necessary in case the interrupt was enabled via some
+         * alternative means (ex. debug_fs). Better to check here than
+         * everywhere that calls this function.
+         */
+        if (!adapter->ptp_clock)
+                return;
+
         switch (hw->mac.type) {
         case ixgbe_mac_X540:
                 ptp_clock_event(adapter->ptp_clock, &event);