From 7aeac5bc8c5903b8d27188a21b39f0b2c4bd13c1 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 8 Nov 2015 23:47:52 -0700 Subject: dm: core: Add safe device iteration macros Add iteration macros which support unbinding a device within the loop. Signed-off-by: Simon Glass --- include/dm/device.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/dm/device.h') diff --git a/include/dm/device.h b/include/dm/device.h index 28ba4ca404..7fb99356be 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -509,6 +509,18 @@ static inline bool device_is_on_pci_bus(struct udevice *dev) return device_get_uclass_id(dev->parent) == UCLASS_PCI; } +/** + * device_foreach_child_safe() - iterate through child devices safely + * + * This allows the @pos child to be removed in the loop if required. + * + * @pos: struct udevice * for the current device + * @next: struct udevice * for the next device + * @parent: parent device to scan + */ +#define device_foreach_child_safe(pos, next, parent) \ + list_for_each_entry_safe(pos, next, &parent->child_head, sibling_node) + /* device resource management */ typedef void (*dr_release_t)(struct udevice *dev, void *res); typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data); -- cgit v1.2.1