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authorFurquan Shaikh <furquan@google.com>2020-04-20 17:59:50 -0700
committerFurquan Shaikh <furquan@google.com>2020-04-22 19:14:51 +0000
commit1f3055aa36655cce731dcc8f33a21b011cec14eb (patch)
treeaabdc97bc0cdfc6caf3ccab5f90d94e0bb7b704b /src/device
parent38b349cb35738377cf42b71afa9e5d66e1a8eb4b (diff)
device: Add helper function to find matching device on bus
This change adds a helper function dev_find_matching_device_on_bus() which scans all the child devices on the given bus and calls a match function provided by the caller. It returns the first device that the match function returns true for, else NULL if no such device is found. Change-Id: I2e3332c0a175ab995c523f078f29a9f498f17931 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40543 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/device')
-rw-r--r--src/device/device_const.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/device/device_const.c b/src/device/device_const.c
index de404dc0d1..add253b511 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -70,6 +70,19 @@ DEVTREE_CONST struct device *dev_find_path(
return result;
}
+DEVTREE_CONST struct device *dev_find_matching_device_on_bus(const struct bus *bus,
+ match_device_fn fn)
+{
+ DEVTREE_CONST struct device *child = NULL;
+
+ while ((child = dev_bus_each_child(bus, child)) != NULL) {
+ if (fn(child))
+ break;
+ }
+
+ return child;
+}
+
/**
* Given a device pointer, find the next PCI device.
*