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The fdt_overlay_apply() function purports to support the edge cases where
an overlay has no fixups to be applied, or a base tree which has no
symbols (the latter can only work if the former is also true). However it
gets it wrong in a couple of small ways:
* In the no fixups case, it doesn't fail immediately, but will attempt
fdt_for_each_property_offset() giving -FDT_ERR_NOTFOUND as the node
offset, which will fail. Instead it should succeed immediately, since
there's nothing to do.
* In the case of no symbols, it again doesn't fail immediately. However
if there is an actual fixup it will fail with an unexpected error,
because -FDT_ERR_NOTFOUND is passed to fdt_getprop() when attempting to
look up the symbols. We should instead return -FDT_ERR_NOTFOUND
directly.
Both of these errors lead to the code returning misleading error codes in
failing cases.
[ DTC commit: 7d8ef6e1db9794f72805a0855f4f7f12fadd03d3 ]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Simon Glass <sjg@chromium.org>
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|---|---|---|
| .. | ||
| fdt.c | ||
| fdt_addresses.c | ||
| fdt_empty_tree.c | ||
| fdt_overlay.c | ||
| fdt_region.c | ||
| fdt_ro.c | ||
| fdt_rw.c | ||
| fdt_strerror.c | ||
| fdt_sw.c | ||
| fdt_wip.c | ||
| libfdt.swig | ||
| libfdt_internal.h | ||
| Makefile | ||
| README | ||
| setup.py | ||
| test_libfdt.py | ||
The libfdt functionality was written by David Gibson. The original source came from the Git repository: URL: git://ozlabs.org/home/dgibson/git/libfdt.git author David Gibson <dgibson@sneetch.(none)> Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100) committer David Gibson <dgibson@sneetch.(none)> Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100) commit 857f54e79f74429af20c2b5ecc00ee98af6a3b8b tree 2f648f0f88225a51ded452968d28b4402df8ade0 parent 07a12a08005f3b5cd9337900a6551e450c07b515 To adapt for U-Boot usage, only the applicable files were copied and imported into the U-Boot Git repository. Omitted: * GPL - U-Boot comes with a copy of the GPL license * test subdirectory - not directly useful for U-Boot After importing, other customizations were performed. See the "git log" for details. Jerry Van Baren