From 95ce385a4ad0bb0d0a20f68b2a1f2451584bf3ff Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 23 Apr 2017 20:10:45 -0600 Subject: dm: core: Add uclass_first/next_device_check() Sometimes it is useful to iterate through all devices in a uclass and skip over those which do not work correctly (e.g fail to probe). Add two new functions to provide this feature. The caller must check the return value each time to make sure that the device is valid. But the device pointer is always returned. Signed-off-by: Simon Glass --- drivers/core/uclass.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'drivers') diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index 97500f41084..f5e40679220 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -492,6 +492,33 @@ int uclass_next_device(struct udevice **devp) return uclass_get_device_tail(dev, ret, devp); } +int uclass_first_device_check(enum uclass_id id, struct udevice **devp) +{ + int ret; + + *devp = NULL; + ret = uclass_find_first_device(id, devp); + if (ret) + return ret; + if (!*devp) + return 0; + + return device_probe(*devp); +} + +int uclass_next_device_check(struct udevice **devp) +{ + int ret; + + ret = uclass_find_next_device(devp); + if (ret) + return ret; + if (!*devp) + return 0; + + return device_probe(*devp); +} + int uclass_bind_device(struct udevice *dev) { struct uclass *uc; -- cgit v1.3.1