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gpio: mpc8xxx: Add platform device to gpiochip->parent
[ Upstream commit 322f6a3182
]
Dear Linus Walleij,
In old kernels, some APIs still try to use parent->of_node from struct gpio_chip,
and it could be resulted in kernel panic because parent is NULL. Adding platform
device to gpiochip->parent can fix this problem.
Signed-off-by: Johnson Chen <johnsonch.chen@moxa.com>
Link: https://patchwork.kernel.org/patch/11234609
Link: https://lore.kernel.org/r/HK0PR01MB3521489269F76467DFD7843FFA450@HK0PR01MB3521.apcprd01.prod.exchangelabs.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -317,6 +317,7 @@ static int mpc8xxx_probe(struct platform_device *pdev)
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return -ENOMEM;
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gc = &mpc8xxx_gc->gc;
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gc->parent = &pdev->dev;
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if (of_property_read_bool(np, "little-endian")) {
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ret = bgpio_init(gc, &pdev->dev, 4,
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