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    Subject[PATCH 5.4 091/149] ACPI: AMBA: Fix resource name in /proc/iomem
    Date
    From: Liguang Zhang <zhangliguang@linux.alibaba.com>

    [ Upstream commit 7718629432676b5ebd9a32940782fe297a0abf8d ]

    In function amba_handler_attach(), dev->res.name is initialized by
    amba_device_alloc. But when address_found is false, dev->res.name is
    assigned to null value, which leads to wrong resource name display in
    /proc/iomem, "<BAD>" is seen for those resources.

    Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/acpi/acpi_amba.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/acpi/acpi_amba.c b/drivers/acpi/acpi_amba.c
    index 49b781a9cd97..ab8a4e0191b1 100644
    --- a/drivers/acpi/acpi_amba.c
    +++ b/drivers/acpi/acpi_amba.c
    @@ -76,6 +76,7 @@ static int amba_handler_attach(struct acpi_device *adev,
    case IORESOURCE_MEM:
    if (!address_found) {
    dev->res = *rentry->res;
    + dev->res.name = dev_name(&dev->dev);
    address_found = true;
    }
    break;
    --
    2.30.2


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