From: Johnson CH Chen (陳昭勳) Date: Tue, 26 Nov 2019 06:51:11 +0000 (+0000) Subject: gpio: mpc8xxx: Add platform device to gpiochip->parent X-Git-Tag: v5.4.13~23 X-Git-Url: https://git.fsl.cs.sunysb.edu/?a=commitdiff_plain;h=f44e6a300d45ca4ccb10af24974207bbce8bd607;p=wrapfs-5.3.y.git gpio: mpc8xxx: Add platform device to gpiochip->parent [ Upstream commit 322f6a3182d42df18059a89c53b09d33919f755e ] 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 Link: https://patchwork.kernel.org/patch/11234609 Link: https://lore.kernel.org/r/HK0PR01MB3521489269F76467DFD7843FFA450@HK0PR01MB3521.apcprd01.prod.exchangelabs.com Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index a031cbcdf6ef..d72a3a5507b0 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -346,6 +346,7 @@ static int mpc8xxx_probe(struct platform_device *pdev) return -ENOMEM; gc = &mpc8xxx_gc->gc; + gc->parent = &pdev->dev; if (of_property_read_bool(np, "little-endian")) { ret = bgpio_init(gc, &pdev->dev, 4,