[PATCH 0/2] Preserve the flags portion on 1:1 dma-ranges mapping

Andrea della Porta
2024-11-08T10:38:57Z

Empty dma-ranges in DT nodes using 3-cell address spcifier cause the
flag portion to be dropped by of_translate_one(), failing the translation
chain. This patch aims at fixing this issue.

Part of this patchset was originally preparatory for a bigger patchset
(see [1]). It has been split in a standalone one for better management
and because it contains a bugfix which is probably of interest to stable
branch.
I've also added new tests to unittest to prove it.

Many thanks,
Andrea

References:
[1] - https://lore.kernel.org/all/3029857353c9499659369c1540ba887d7860670f.1730123575.git.andrea.porta@suse.com/

Andrea della Porta (2):
of/unittest: Add empty dma-ranges address translation tests
of: address: Preserve the flags portion on 1:1 dma-ranges mapping

drivers/of/address.c | 3 +-
drivers/of/unittest-data/tests-address.dtsi | 2 ++
drivers/of/unittest.c | 39 +++++++++++++++++++++
3 files changed, 43 insertions(+), 1 deletion(-)

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2.35.3