[PATCH 0/2] phy: qcom: qmp-combo: fix forced com_init() error handling

[Oleg Keri]

Two pre-existing problems in the typec_switch and typec_mux callbacks,
both on the force=true path that tears the common block down and brings it
back up.  Found while looking at that code for

  https://lore.kernel.org/all/20260909140345.4239-1-okerixx@xxxxxxxxx/

which is an unrelated fix to the same two functions and does not depend on
these; they can be applied in either order.

Patch 1 stops a forced qmp_combo_com_init() failure from dropping an
init_count reference it never took, which drives the counter negative and
makes qmp_combo_com_exit() return early for the rest of the boot.

Patch 2 stops both callbacks from carrying on to write PHY registers after
the bringup has failed and left the clocks disabled.

Neither is easy to trigger deliberately - both need qmp_combo_com_init() to
fail - so they are found by inspection rather than reproduced.  The tree
they were written against is exercised daily on a Lenovo Yoga Slim 7x Gen 11
(Snapdragon X2 Elite), where the typec callbacks run on every USB-C
orientation and altmode change.

Oleg Keri (2):
  phy: qcom: qmp-combo: do not decrement init_count on a forced init
    failure
  phy: qcom: qmp-combo: check qmp_combo_com_init() in the typec
    callbacks

 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

-- 
2.55.0


base-commit: df2908090cda368b01ff43709f51890076c56157