diff options
| author | Karol Kolacinski <karol.kolacinski@intel.com> | 2022-10-03 11:55:18 +0200 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2022-11-23 08:59:42 -0800 |
| commit | a711a3288cc69af93148db343d3bfaf5a177a6b0 (patch) | |
| tree | c34b5f3550577c60464e4c481892ba0218878356 /drivers/net/ethernet/intel/ice/ice_ptp_hw.c | |
| parent | e80bd08fd75a644e2337fb535c1afdb6417357ff (diff) | |
| download | linux-a711a3288cc69af93148db343d3bfaf5a177a6b0.tar.bz2 | |
ice: Check for PTP HW lock more frequently
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>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_ptp_hw.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c index 772b1f566d6e..1f8dd50db524 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp_hw.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp_hw.c @@ -2963,16 +2963,18 @@ bool ice_ptp_lock(struct ice_hw *hw) 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; |