of: unittest: Add test for of_dma_get_max_cpu_address()

commit 07d13a1d6120d453c3c1f020578693d072deded5 upstream

Introduce a test for of_dma_get_max_cup_address(), it uses the same DT
data as the rest of dma-ranges unit tests.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201119175400.9995-5-nsaenzjulienne@suse.de
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 06cc988faf78b34dddf596faa3bbe5dac9622af2..98cc0163301bfce994ae6d36664cf0244695fbd5 100644 (file)
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -869,6 +869,23 @@ static void __init of_unittest_changeset(void)
 #endif
 }
 
+static void __init of_unittest_dma_get_max_cpu_address(void)
+{
+       struct device_node *np;
+       phys_addr_t cpu_addr;
+
+       np = of_find_node_by_path("/testcase-data/address-tests");
+       if (!np) {
+               pr_err("missing testcase data\n");
+               return;
+       }
+
+       cpu_addr = of_dma_get_max_cpu_address(np);
+       unittest(cpu_addr == 0x4fffffff,
+                "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
+                &cpu_addr, 0x4fffffff);
+}
+
 static void __init of_unittest_dma_ranges_one(const char *path,
                u64 expect_dma_addr, u64 expect_paddr)
 {
@@ -3266,6 +3283,7 @@ static int __init of_unittest(void)
        of_unittest_changeset();
        of_unittest_parse_interrupts();
        of_unittest_parse_interrupts_extended();
+       of_unittest_dma_get_max_cpu_address();
        of_unittest_parse_dma_ranges();
        of_unittest_pci_dma_ranges();
        of_unittest_match_node();