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author | Furquan Shaikh <furquan@google.com> | 2020-04-20 17:59:50 -0700 |
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committer | Furquan Shaikh <furquan@google.com> | 2020-04-22 19:14:51 +0000 |
commit | 1f3055aa36655cce731dcc8f33a21b011cec14eb (patch) | |
tree | aabdc97bc0cdfc6caf3ccab5f90d94e0bb7b704b /src/device | |
parent | 38b349cb35738377cf42b71afa9e5d66e1a8eb4b (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.c | 13 |
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. * |