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usb: dm: Add a usb_for_each_root_dev() helper function

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Iterating over usb-root devs and doing something for all of them is
a bit tricky with dm, factor out the proven usb_show_tree() for this
into a helper function.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede 2016-07-03 20:22:04 +02:00 committed by Marek Vasut
parent e8009beff6
commit 2138fd6d5d
1 changed files with 12 additions and 3 deletions
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15
cmd/usb.c
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@ -438,9 +438,11 @@ static void usb_show_subtree(struct usb_device *dev)
usb_show_tree_graph(dev, &preamble[0]);
}
void usb_show_tree(void)
{
#ifdef CONFIG_DM_USB
typedef void (*usb_dev_func_t)(struct usb_device *udev);
static void usb_for_each_root_dev(usb_dev_func_t func)
{
struct udevice *bus;
for (uclass_find_first_device(UCLASS_USB, &bus);
@ -455,9 +457,16 @@ void usb_show_tree(void)
device_find_first_child(bus, &dev);
if (dev && device_active(dev)) {
udev = dev_get_parent_priv(dev);
usb_show_subtree(udev);
func(udev);
}
}
}
#endif
void usb_show_tree(void)
{
#ifdef CONFIG_DM_USB
usb_for_each_root_dev(usb_show_subtree);
#else
struct usb_device *udev;
int i;