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From:   Robin Murphy <robin.murphy@arm.com>
To:     Joerg Roedel <joro@8bytes.org>, Christoph Hellwig <hch@lst.de>
Cc:     Vineet Gupta <vgupta@kernel.org>,
        Russell King <linux@armlinux.org.uk>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Huacai Chen <chenhuacai@kernel.org>,
        WANG Xuerui <kernel@xen0n.name>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
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        Palmer Dabbelt <palmer@dabbelt.com>,
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        Hanjun Guo <guohanjun@huawei.com>,
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        Haiyang Zhang <haiyangz@microsoft.com>,
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        Matthew Rosato <mjrosato@linux.ibm.com>,
        Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Jason Gunthorpe <jgg@ziepe.ca>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org,
        iommu@lists.linux.dev, devicetree@vger.kernel.org,
        Rob Herring <robh@kernel.org>
Subject: [PATCH v2 1/7] OF: Retire dma-ranges mask workaround
Date:   Wed, 13 Dec 2023 17:17:54 +0000
Message-Id: <6b4156c5061e29bfd95fdd2f6744ee727ea7f1a2.1702486837.git.robin.murphy@arm.com>
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The fixup adding 1 to the dma-ranges size may have been for the benefit
of some early AMD Seattle DTs, or may have merely been a just-in-case,
but either way anyone who might have deserved to get the message has
hopefully seen the warning in the 9 years we've had it there. The modern
dma_range_map mechanism should happily handle odd-sized ranges with no
ill effect, so there's little need to care anyway now. Clean it up.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
v2: Tweak commit message
---
 drivers/of/device.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/of/device.c b/drivers/of/device.c
index 1ca42ad9dd15..526a42cdf66e 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -129,22 +129,6 @@ int of_dma_configure_id(struct device *dev, struct device_node *np,
 				dma_end = r->dma_start + r->size;
 		}
 		size = dma_end - dma_start;
-
-		/*
-		 * Add a work around to treat the size as mask + 1 in case
-		 * it is defined in DT as a mask.
-		 */
-		if (size & 1) {
-			dev_warn(dev, "Invalid size 0x%llx for dma-range(s)\n",
-				 size);
-			size = size + 1;
-		}
-
-		if (!size) {
-			dev_err(dev, "Adjusted size 0x%llx invalid\n", size);
-			kfree(map);
-			return -EINVAL;
-		}
 	}
 
 	/*
-- 
2.39.2.101.g768bb238c484.dirty