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Date: Sun, 7 Aug 2022 21:31:04 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Liang He <windhl@....com>, Geert Uytterhoeven <geert+renesas@...der.be>, Sasha Levin <sashal@...nel.org>, magnus.damm@...il.com, linux@...linux.org.uk, linux-arm-kernel@...ts.infradead.org, linux-renesas-soc@...r.kernel.org Subject: [PATCH AUTOSEL 5.19 46/58] ARM: shmobile: rcar-gen2: Increase refcount for new reference From: Liang He <windhl@....com> [ Upstream commit 75a185fb92e58ccd3670258d8d3b826bd2fa6d29 ] In rcar_gen2_regulator_quirk(), for_each_matching_node_and_match() will automatically increase and decrease the refcount. However, we should call of_node_get() for the new reference created in 'quirk->np'. Besides, we also should call of_node_put() before the 'quirk' being freed. Signed-off-by: Liang He <windhl@....com> Link: https://lore.kernel.org/r/20220701121804.234223-1-windhl@126.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c b/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c index abea41f7782e..117e7b07995b 100644 --- a/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c +++ b/arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c @@ -125,6 +125,7 @@ static int regulator_quirk_notify(struct notifier_block *nb, list_for_each_entry_safe(pos, tmp, &quirk_list, list) { list_del(&pos->list); + of_node_put(pos->np); kfree(pos); } @@ -174,11 +175,12 @@ static int __init rcar_gen2_regulator_quirk(void) memcpy(&quirk->i2c_msg, id->data, sizeof(quirk->i2c_msg)); quirk->id = id; - quirk->np = np; + quirk->np = of_node_get(np); quirk->i2c_msg.addr = addr; ret = of_irq_parse_one(np, 0, argsa); if (ret) { /* Skip invalid entry and continue */ + of_node_put(np); kfree(quirk); continue; } @@ -225,6 +227,7 @@ static int __init rcar_gen2_regulator_quirk(void) err_mem: list_for_each_entry_safe(pos, tmp, &quirk_list, list) { list_del(&pos->list); + of_node_put(pos->np); kfree(pos); } -- 2.35.1
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