This branch contains a bug fix for the way devicetree code identifies
the type of device. Device drivers can contain a list of of_device_ids,
but it more than one entry will match, then the device driver may choose
the wrong one. Commit 105353145e, "match each node compatible against
all given matches first", was queued for v3.14 but ended up causing
other bugs. Commit 06b29e76a7 attempted to fix it but it had other bugs.
Merely reverting the fix and waiting until v3.15 isn't a good option
because there is code in v3.14 that depends on the revised behaviour to
boot.
This branch should finally fixes the problem correctly. This time
instead of just hoping that the patch is correct, this branch also adds
new testcases that validate the behaviour.
The changes in this branch are larger than I would like for a -rc pull,
but moving the test case data out of out of arch/arm so that it could be
validated on other architectures was important.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.14 (GNU/Linux)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=wJz0
-----END PGP SIGNATURE-----
Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux
Pull devicetree fixes from Grant Likely:
"Device tree compatible match order bug fix
This branch contains a bug fix for the way devicetree code identifies
the type of device. Device drivers can contain a list of
of_device_ids, but it more than one entry will match, then the device
driver may choose the wrong one. Commit 105353145e, "match each node
compatible against all given matches first", was queued for v3.14 but
ended up causing other bugs. Commit 06b29e76a7 attempted to fix it
but it had other bugs. Merely reverting the fix and waiting until
v3.15 isn't a good option because there is code in v3.14 that depends
on the revised behaviour to boot.
This branch should finally fixes the problem correctly. This time
instead of just hoping that the patch is correct, this branch also
adds new testcases that validate the behaviour.
The changes in this branch are larger than I would like for a -rc
pull, but moving the test case data out of out of arch/arm so that it
could be validated on other architectures was important"
* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux:
of: Add self test for of_match_node()
of: Move testcase FDT data into drivers/of
of: reimplement the matching method for __of_match_node()
Revert "of: search the best compatible match first in __of_match_node()"
Linus Torvalds
10527106ab