linux-kernel - [PATCH v2 0/2] Preserve the flags portion on 1:1 dma-ranges mapping

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Message-ID: <cover.1732441813.git.andrea.porta@suse.com>
Date: Sun, 24 Nov 2024 11:05:35 +0100
From: Andrea della Porta <andrea.porta@...e.com>
To: Andrea della Porta <andrea.porta@...e.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczynski <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Derek Kiernan <derek.kiernan@....com>,
	Dragan Cvetic <dragan.cvetic@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Saravana Kannan <saravanak@...gle.com>,
	linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org,
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	linux-arm-kernel@...ts.infradead.org,
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	Masahiro Yamada <masahiroy@...nel.org>,
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	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v2 0/2] Preserve the flags portion on 1:1 dma-ranges mapping

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/


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