From 903e83ee84649c1a70bfd8b9ec84dacb8c24e7cb Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 27 Jan 2020 08:49:48 -0700 Subject: dm: core: Add a way to iterate through children, probing each It is sometimes useful to process all children, making sure they are probed first. Add functions to help with this and a macro to make it more convenient. Signed-off-by: Simon Glass --- drivers/core/device.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/core') diff --git a/drivers/core/device.c b/drivers/core/device.c index c948d8d..89ea820 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -792,6 +792,28 @@ int device_find_child_by_name(const struct udevice *parent, const char *name, return -ENODEV; } +int device_first_child_err(struct udevice *parent, struct udevice **devp) +{ + struct udevice *dev; + + device_find_first_child(parent, &dev); + if (!dev) + return -ENODEV; + + return device_get_device_tail(dev, 0, devp); +} + +int device_next_child_err(struct udevice **devp) +{ + struct udevice *dev = *devp; + + device_find_next_child(&dev); + if (!dev) + return -ENODEV; + + return device_get_device_tail(dev, 0, devp); +} + int device_first_child_ofdata_err(struct udevice *parent, struct udevice **devp) { struct udevice *dev; -- cgit v1.1