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10527106ab
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) iQIcBAABAgAGBQJTB2qsAAoJEMWQL496c2LNmvYQAJPwmc3f76L/HxxuJZ3TVpFF 2JhtCUyzTrsuebDSanAZLhzwCrIL4N8I/1rZObvkQuxUEUPNg4Khx9chMYwsG7L7 vbdr+3bkYnwaaGHzoH0NnNM5x1NLm29WOeHaWvT9Nm8iA1399AaOeAXniLQrTgBv LxipQc3SZpRSKdCDCi2y32TESMJcN7FT1aD4EKHAZocmXMpMaxEYQ2eFO70Txf5O 1SbNkZ7LsAnm1TmoH7nf0um9IFX7bvt2KkonpKBL2mOoDfq40pBosV3Zt2JwaeDy 3nkBeAFs3YvIDjZy3h+WdWLXlF9E29P7CXreE/uSJTnoYft6aCDfgz15USc2j2OA BTnK0kqJ3NWu6YAKrQHHoQmisnuDwg84oEK0JLJCfMcA3IOCBXV+iYHbo41j/dO5 yprnS1zms6UZuOXV2RjseQ34THkR3oDPbSxKmFTK/KGaa568ES0l1ZPAsvuVZqNr 5elDskt+lfF96WLGbyC0DP5Zib/0eFTbf18p///4lefkr6ysT+CdIJTsRj0/Uz0V 40nwCJH2t+wVCtcI/+mo3yvc4C77OoRhAOAxz8D9YkOlt8ilfgIDeAc1krAAa09T 0KfpfkLDvXEccZF+Jo2Z9TU7QFdeLVK/QAsvCZN4EcMU31ePEldMiniZ69/aySPl D/ahG24w1pakKXujtJK2 =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()"