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    Subject[PATCH 5.10 27/42] of: unittest: Add test for of_dma_get_max_cpu_address()
    Date
    From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>

    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>
    ---
    drivers/of/unittest.c | 18 ++++++++++++++++++
    1 file changed, 18 insertions(+)

    --- a/drivers/of/unittest.c
    +++ b/drivers/of/unittest.c
    @@ -869,6 +869,23 @@ static void __init of_unittest_changeset
    #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();

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