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@xxxxxxxx/ Changes in V2: - Added blank lines between paragraphs in commit message for patch 2 - Fixed a comment to explain the code behaviour in a straighter way 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(-) -- 2.35.3
