net: stmmac: ptp: improve handling of aux_ts_lock lifetime

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The aux_ts_lock mutex is only required while the PTP clock has been
successfully registered.

stmmac_ptp_register() does not return any errors (as we don't wish to
prevent the netdev being opened if PTP fails), stmmac_ptp_unregister()
was coded to allow it to be called irrespective of whether PTP was
successfully registered or not.

Arrange for the aux_ts_lock mutex to be destroyed if the PTP clock
is not functional during stmmac_ptp_register(), and only destroy it
in stmmac_ptp_unregister() if we had a PTP clock registered.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Russell King (Oracle) 2025-09-11 12:09:37 +01:00 • committed by Jakub Kicinski

parent 9c0d0fa8d4

commit 9a1d6fa001

1 changed files with 7 additions and 3 deletions

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drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c

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