linux/drivers/of/unittest-data
Frank Rowand 2fe0e8769d of: overlay: check prevents multiple fragments touching same property
Add test case of two fragments updating the same property.  After
adding the test case, the system hangs at end of boot, after
after slub stack dumps from kfree() in crypto modprobe code.

Multiple overlay fragments adding, modifying, or deleting the same
property is not supported.  Add check to detect the attempt and fail
the overlay apply.

Before this patch, the first fragment error would terminate
processing.  Allow fragment checking to proceed and report all
of the fragment errors before terminating the overlay apply. This
is not a hot path, thus not a performance issue (the error is not
transient and requires fixing the overlay before attempting to
apply it again).

After applying this patch, the devicetree unittest messages will
include:

   OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/rpm_avail

   ...

   ### dt-test ### end of unittest - 212 passed, 0 failed

The check to detect two fragments updating the same property is
folded into the patch that created the test case to maintain
bisectability.

Tested-by: Alan Tull <atull@kernel.org>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
2018-11-08 22:12:03 -08:00
..
Makefile of: overlay: check prevents multiple fragments touching same property 2018-11-08 22:12:03 -08:00
overlay.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_0.dts of: change overlay apply input data from unflattened to FDT 2018-03-04 00:29:24 -08:00
overlay_1.dts of: change overlay apply input data from unflattened to FDT 2018-03-04 00:29:24 -08:00
overlay_2.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_3.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_4.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_5.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_6.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_7.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_8.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_9.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_10.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_11.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_12.dts of: change overlay apply input data from unflattened to FDT 2018-03-04 00:29:24 -08:00
overlay_13.dts of: change overlay apply input data from unflattened to FDT 2018-03-04 00:29:24 -08:00
overlay_15.dts of/unittest: Fix I2C bus unit-address error 2018-09-19 15:10:06 -07:00
overlay_bad_add_dup_node.dts of: overlay: test case of two fragments adding same node 2018-11-08 22:11:51 -08:00
overlay_bad_add_dup_prop.dts of: overlay: check prevents multiple fragments touching same property 2018-11-08 22:12:03 -08:00
overlay_bad_phandle.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_bad_symbol.dts of: convert unittest overlay devicetree source to sugar syntax 2018-03-04 00:29:34 -08:00
overlay_base.dts of: overlay: check prevents multiple fragments touching same property 2018-11-08 22:12:03 -08:00
testcases.dts DeviceTree fixes for 4.15: 2017-11-20 21:38:41 -10:00
tests-interrupts.dtsi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tests-match.dtsi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tests-overlay.dtsi of/unittest: Fix I2C bus unit-address error 2018-09-19 15:10:06 -07:00
tests-phandle.dtsi of: unittest: Add phandle remapping test 2018-02-12 08:37:59 -06:00
tests-platform.dtsi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00