It was observed that PTP HW semaphore can be held for ~50 ms in worst
case.
SW should wait longer and check more frequently if the HW lock is held.
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
u32 hw_lock;
int i;
-#define MAX_TRIES 5
+#define MAX_TRIES 15
for (i = 0; i < MAX_TRIES; i++) {
hw_lock = rd32(hw, PFTSYN_SEM + (PFTSYN_SEM_BYTES * hw->pf_id));
hw_lock = hw_lock & PFTSYN_SEM_BUSY_M;
- if (!hw_lock)
- break;
+ if (hw_lock) {
+ /* Somebody is holding the lock */
+ usleep_range(5000, 6000);
+ continue;
+ }
- /* Somebody is holding the lock */
- usleep_range(10000, 20000);
+ break;
}
return !hw_lock;