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| author | Krzysztof Kozlowski <krzk@kernel.org> | 2019-08-05 18:27:07 +0200 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2019-10-01 20:22:04 +0200 |
| commit | 5c7f48dd14e892e3e920dd6bbbd52df79e1b3b41 (patch) | |
| tree | 058915f0a2f4cf6fdcf54508c2a468a4eda67370 /drivers/pinctrl/samsung | |
| parent | 3d2557ab75d4c568c79eefa2e550e0d80348a6bd (diff) | |
| download | linux-5c7f48dd14e892e3e920dd6bbbd52df79e1b3b41.tar.bz2 | |
pinctrl: samsung: Fix device node refcount leaks in Exynos wakeup controller init
In exynos_eint_wkup_init() the for_each_child_of_node() loop is used
with a break to find a matching child node. Although each iteration of
for_each_child_of_node puts the previous node, but early exit from loop
misses it. This leads to leak of device node.
Cc: <stable@vger.kernel.org>
Fixes: 43b169db1841 ("pinctrl: add exynos4210 specific extensions for samsung pinctrl driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'drivers/pinctrl/samsung')
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-exynos.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index e7f4cbad2c92..0599f5127b01 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -506,6 +506,7 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) bank->nr_pins, &exynos_eint_irqd_ops, bank); if (!bank->irq_domain) { dev_err(dev, "wkup irq domain add failed\n"); + of_node_put(wkup_np); return -ENXIO; } @@ -520,8 +521,10 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) weint_data = devm_kcalloc(dev, bank->nr_pins, sizeof(*weint_data), GFP_KERNEL); - if (!weint_data) + if (!weint_data) { + of_node_put(wkup_np); return -ENOMEM; + } for (idx = 0; idx < bank->nr_pins; ++idx) { irq = irq_of_parse_and_map(bank->of_node, idx); @@ -538,10 +541,13 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) } } - if (!muxed_banks) + if (!muxed_banks) { + of_node_put(wkup_np); return 0; + } irq = irq_of_parse_and_map(wkup_np, 0); + of_node_put(wkup_np); if (!irq) { dev_err(dev, "irq number for muxed EINTs not found\n"); return 0; |