From eac8dbf74f30479b70b9a53f3b24285bd6229d09 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 3 Sep 2016 09:14:58 +0100 Subject: [PATCH] ARM: sa1111: ensure we only touch RAB bus type devices when removing When removing a SA1111 device, we try to remove all child devices. However, we must only remove our own RAB bus typed devices from the tree, there may be other devices present which should not be touched. This is necessary before we introduce gpiochip to SA1111 to avoid incorrectly trying to remove the gpiochip device, leading to an oops in __release_resource(). Signed-off-by: Russell King --- arch/arm/common/sa1111.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index 2e076c492005..303c62861d84 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -815,6 +815,8 @@ static int __sa1111_probe(struct device *me, struct resource *mem, int irq) static int sa1111_remove_one(struct device *dev, void *data) { struct sa1111_dev *sadev = SA1111_DEV(dev); + if (dev->bus != &sa1111_bus_type) + return 0; device_del(&sadev->dev); release_resource(&sadev->res); put_device(&sadev->dev);