linux-kernel - [PATCH 5.10 272/563] of: unittest: 64 bit dma address test requires arch support

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Date:   Mon, 24 Jan 2022 19:40:37 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Frank Rowand <frank.rowand@...y.com>,
        Rob Herring <robh@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 272/563] of: unittest: 64 bit dma address test requires arch support

From: Frank Rowand <frank.rowand@...y.com>

[ Upstream commit 9fd4cf5d3571b27d746b8ead494a3f051485b679 ]

If an architecture does not support 64 bit dma addresses then testing
for an expected dma address >= 0x100000000 will fail.

Fixes: e0d072782c73 ("dma-mapping: introduce DMA range map, supplanting dma_pfn_offset")
Signed-off-by: Frank Rowand <frank.rowand@...y.com>
Signed-off-by: Rob Herring <robh@...nel.org>
Link: https://lore.kernel.org/r/20211212221852.233295-1-frowand.list@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/of/unittest.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index a5c4c77b6f3e2..5407bbdb64395 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -941,8 +941,9 @@ static void __init of_unittest_parse_dma_ranges(void)
 {
 	of_unittest_dma_ranges_one("/testcase-data/address-tests/device@...00000",
 		0x0, 0x20000000);
-	of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@...00000/device@...0",
-		0x100000000, 0x20000000);
+	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
+		of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@...00000/device@...0",
+			0x100000000, 0x20000000);
 	of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@...00000",
 		0x80000000, 0x20000000);
 }
-- 
2.34.1