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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-05-16 12:12:29 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-05-18 08:06:35 +0200 |
| commit | 145e65ab12e7a8d7a895b8a8a4631ae303ec734f (patch) | |
| tree | 9612f457584f15eae8714c0181fbb0174db5246d /common/oftree.c | |
| parent | 65a8f2f8f1066b589560b1f09f3ae1da485335eb (diff) | |
| download | barebox-145e65ab12e7a8d7a895b8a8a4631ae303ec734f.tar.gz barebox-145e65ab12e7a8d7a895b8a8a4631ae303ec734f.tar.xz | |
of: add a function to remove an of_fixup
This function is needed when a device that already registered a fixup in
the probe routine fails later to probe completely. Without unregistering
the fixup the function might later be called with invalid data.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'common/oftree.c')
| -rw-r--r-- | common/oftree.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/common/oftree.c b/common/oftree.c index 50fc95b588..f75d7b4bfe 100644 --- a/common/oftree.c +++ b/common/oftree.c @@ -160,6 +160,25 @@ int of_register_fixup(int (*fixup)(struct device_node *, void *), void *context) } /* + * Remove a previously registered fixup. Only the first (if any) is removed. + * Returns 0 if a match was found (and removed), -ENOENT otherwise. + */ +int of_unregister_fixup(int (*fixup)(struct device_node *, void *), + void *context) +{ + struct of_fixup *of_fixup; + + list_for_each_entry(of_fixup, &of_fixup_list, list) { + if (of_fixup->fixup == fixup && of_fixup->context == context) { + list_del(&of_fixup->list); + return 0; + } + } + + return -ENOENT; +} + +/* * Apply registered fixups for the given fdt. The fdt must have * enough free space to apply the fixups. */ |