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Weigang He
fa476d53ed
exynos_get_pmu_regmap() obtains a device_node via of_find_matching_node()
and passes it to exynos_get_pmu_regmap_by_phandle(np, NULL). With
propname == NULL the callee uses np directly and does not drop a
reference, so the reference taken by of_find_matching_node() is leaked on
every call -- including on each -EPROBE_DEFER retry of the only in-tree
caller, exynos_retention_init() in the Exynos pinctrl driver.
Annotate np with the __free(device_node) cleanup attribute so the
reference is released when the function returns.
Found by static analysis tool CodeQL.
Fixes: 76640b84bd ("soc: samsung: pmu: Provide global function to get PMU regmap")
Signed-off-by: Weigang He <geoffreyhe2@gmail.com>
Link: https://patch.msgid.link/20260609143852.1783558-1-geoffreyhe2@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>