The following commit has been merged into the timers/ptp branch of tip:
Commit-ID: 6a5d1d6b447f4ead15133730b92141707c61832b
Gitweb: https://git.kernel.org/tip/6a5d1d6b447f4ead15133730b92141707c61832b
Author: Thomas Gleixner <tglx@kernel.org>
AuthorDate: Fri, 29 May 2026 22:00:36 +02:00
Committer: Thomas Gleixner <tglx@kernel.org>
CommitterDate: Tue, 02 Jun 2026 11:39:58 +02:00
wifi: iwlwifi: Adopt PTP cross timestamps to core changes
iwlwifi only supports CLOCK_REALTIME timestamps and provides an incomplete
result without system counter values etc.
It also zeros struct system_device_crosststamp, which is already zeroed in
the core and initialized with the clock ID.
Remove the zeroing and reject any request for a clock ID other than REALTIME.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260529195557.535447186@kernel.org
---
drivers/net/wireless/intel/iwlwifi/mld/ptp.c | 3 ++-
drivers/net/wireless/intel/iwlwifi/mvm/ptp.c | 5 +++--
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mld/ptp.c b/drivers/net/wireless/intel/iwlwifi/mld/ptp.c
index c65f4b5..921b93c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mld/ptp.c
+++ b/drivers/net/wireless/intel/iwlwifi/mld/ptp.c
@@ -250,7 +250,8 @@ iwl_mld_phc_get_crosstimestamp(struct ptp_clock_info *ptp,
/* System (wall) time */
ktime_t sys_time;
- memset(xtstamp, 0, sizeof(struct system_device_crosststamp));
+ if (xtstamp->clock_id != CLOCK_REALTIME)
+ return -ENOTSUPP;
ret = iwl_mld_get_crosstimestamp_fw(mld, &gp2, &sys_time);
if (ret) {
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ptp.c b/drivers/net/wireless/intel/iwlwifi/mvm/ptp.c
index f7b6201..4c40a52 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ptp.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ptp.c
@@ -160,13 +160,14 @@ iwl_mvm_phc_get_crosstimestamp(struct ptp_clock_info *ptp,
/* System (wall) time */
ktime_t sys_time;
- memset(xtstamp, 0, sizeof(struct system_device_crosststamp));
-
if (!mvm->ptp_data.ptp_clock) {
IWL_ERR(mvm, "No PHC clock registered\n");
return -ENODEV;
}
+ if (xtstamp->clock_id != CLOCK_REALTIME)
+ return -ENOTSUPP;
+
mutex_lock(&mvm->mutex);
if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SYNCED_TIME)) {
ret = iwl_mvm_get_crosstimestamp_fw(mvm, &gp2, &sys_time);