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dpll: send delete notification before unregister in on-pin rollback

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The rollback path in dpll_pin_on_pin_register() called
__dpll_pin_unregister() before dpll_pin_delete_ntf(). When the
unregister dropped the pin's last DPLL reference it cleared the
DPLL_REGISTERED mark in dpll_pin_xa, so the subsequent
dpll_pin_event_send() failed dpll_pin_available() and aborted with
-ENODEV. As a result userspace was never notified of the rollback
deletion and remained out of sync with the kernel.

Send the delete notification first, matching the order used by
dpll_pin_unregister() and dpll_pin_on_pin_unregister().

Fixes: 9d71b54b65 ("dpll: netlink: Add DPLL framework base functions")
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Link: https://patch.msgid.link/20260607183045.1213735-5-grzegorz.nitka@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Grzegorz Nitka
2026-06-07 20:30:36 +02:00
committed by Jakub Kicinski
parent 32239d6002
commit e83b403eb1
1 changed files with 1 additions and 1 deletions
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2
drivers/dpll/dpll_core.c
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@@ -1007,9 +1007,9 @@ int dpll_pin_on_pin_register(struct dpll_pin *parent, struct dpll_pin *pin,
dpll_unregister:
xa_for_each(&parent->dpll_refs, i, ref)
if (i < stop) {
dpll_pin_delete_ntf(pin);
__dpll_pin_unregister(ref->dpll, pin, ops, priv,
parent);
dpll_pin_delete_ntf(pin);
}
dpll_xa_ref_pin_del(&pin->parent_refs, parent, ops, priv, pin);
unlock: