linux-kernel - [PATCH 1/1] of: unittest: 64 bit dma address test requires arch support

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Date:   Sun, 12 Dec 2021 16:18:52 -0600
From:   frowand.list@...il.com
To:     Rob Herring <robh+dt@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] of: unittest: 64 bit dma address test requires arch support

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

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>
---
 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 481ba8682ebf..126020e9838a 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -934,8 +934,9 @@ 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);
 }
-- 
Frank Rowand <frank.rowand@...y.com>