korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-17 01:04:19 +08:00
Code Issues Packages Projects Releases Wiki Activity

pinctrl: samsung: Fix device node refcount leaks in Exynos wakeup controller init

Browse Source 
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: 43b169db18 ("pinctrl: add exynos4210 specific extensions for samsung pinctrl driver")
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2019-08-05 18:27:07 +02:00
parent 3d2557ab75
commit 5c7f48dd14
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/pinctrl/samsung/pinctrl-exynos.c
View File

@ -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;