6.8-stable review patch. If anyone has any objections, please let me know.
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From: Jiri Pirko jiri@nvidia.com
[ Upstream commit 9736c648370d237f61065a7e45e668e2db4374e9 ]
Similar to what is done in dpll_device_unregister(), add assertion to __dpll_pin_unregister() to make sure driver does not try to unregister non-registered pin.
Signed-off-by: Jiri Pirko jiri@nvidia.com Reviewed-by: Vadim Fedorenko vadim.fedorenko@linux.dev Reviewed-by: Arkadiusz Kubalewski arkadiusz.kubalewski@intel.com Link: https://lore.kernel.org/r/20240206074853.345744-1-jiri@resnulli.us Signed-off-by: Jakub Kicinski kuba@kernel.org Stable-dep-of: 38d7b94e81d0 ("dpll: fix dpll_pin_on_pin_register() for multiple parent pins") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dpll/dpll_core.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/dpll/dpll_core.c b/drivers/dpll/dpll_core.c index c751a87c7a8e6..3e6282937e35c 100644 --- a/drivers/dpll/dpll_core.c +++ b/drivers/dpll/dpll_core.c @@ -29,6 +29,8 @@ static u32 dpll_pin_xa_id; WARN_ON_ONCE(!xa_get_mark(&dpll_device_xa, (d)->id, DPLL_REGISTERED)) #define ASSERT_DPLL_NOT_REGISTERED(d) \ WARN_ON_ONCE(xa_get_mark(&dpll_device_xa, (d)->id, DPLL_REGISTERED)) +#define ASSERT_DPLL_PIN_REGISTERED(p) \ + WARN_ON_ONCE(!xa_get_mark(&dpll_pin_xa, (p)->id, DPLL_REGISTERED))
struct dpll_device_registration { struct list_head list; @@ -651,6 +653,7 @@ static void __dpll_pin_unregister(struct dpll_device *dpll, struct dpll_pin *pin, const struct dpll_pin_ops *ops, void *priv) { + ASSERT_DPLL_PIN_REGISTERED(pin); dpll_xa_ref_pin_del(&dpll->pin_refs, pin, ops, priv); dpll_xa_ref_dpll_del(&pin->dpll_refs, dpll, ops, priv); if (xa_empty(&pin->dpll_refs))