[PATCH iwl-net 0/2] ice: fix E825 PTP timer race and drop redundant cross-timestamp access

[Grzegorz Nitka <grzegorz.nitka@intel.com>]

This series fixes a race in the E825 PHY timer start path and removes a
redundant cross-timestamp command programming sequence.

The first patch serializes the E825 PHY timer start sequence with the PTP
lock and keeps the shared GLTSYN_CMD register access and incval programming
within the same critical section. This prevents concurrent PTP updates from
clobbering the source timer command and leaving the E825 PHY clock offset
from the PHC.

The second patch removes the redundant cross-timestamp programming of
GLTSYN_CMD in the capture path. The register accesses were mistakenly
assumed to be required for E823-class devices. In fact, it was the
E824-family (not supported by this driver) not E823.

Grzegorz Nitka (1):
  ice: remove redundant cross-timestamp PTP command

Maciek Machnikowski (1):
  ice: ptp: serialize E825 PHY timer start with PTP lock and incval

 drivers/net/ethernet/intel/ice/ice_ptp.c    |  6 ---
 drivers/net/ethernet/intel/ice/ice_ptp_hw.c | 48 +++++++++------------
 2 files changed, 21 insertions(+), 33 deletions(-)


base-commit: 349099e5d8082ab01e60d91fba9d107591c17371
-- 
2.39.3