[Intel-wired-lan] [PATCH v7 iwl-next 7/7] ice: stop destroying and reinitalizing Tx tracker during reset

[Simon Horman]

On Tue, Jan 23, 2024 at 11:51:31AM +0100, Karol Kolacinski wrote:
> From: Jacob Keller <jacob.e.keller at intel.com>
> 
> The ice driver currently attempts to destroy and re-initialize the Tx
> timestamp tracker during the reset flow. The release of the Tx tracker
> only happened during CORE reset or GLOBAL reset. The ice_ptp_rebuild()
> function always calls the ice_ptp_init_tx function which will allocate
> a new tracker data structure, resulting in memory leaks during PF reset.
> 
> Certainly the driver should not be allocating a new tracker without
> removing the old tracker data, as this results in a memory leak.
> Additionally, there's no reason to remove the tracker memory during a
> reset. Remove this logic from the reset and rebuild flow. Instead of
> releasing the Tx tracker, flush outstanding timestamps just before we
> reset the PHY timestamp block in ice_ptp_cfg_phy_interrupt().
> 
> Signed-off-by: Jacob Keller <jacob.e.keller at intel.com>
> Signed-off-by: Karol Kolacinski <karol.kolacinski at intel.com>
> Reviewed-by: Jacob Keller <jacob.e.keller at intel.com>

Reviewed-by: Simon Horman <horms at kernel.org>