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    Subject[PATCH 3/5] resources: Print warning when inserting resource [mem 0x00000000]
    Date
    Inserting iomem resource [0x0-0x0] is most likely a bug; at least
    print a warning message. Eg.,
    resource: inserting NULL resource iTCO_wdt [mem 0x00000000]

    Cc: Bjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
    ---
    kernel/resource.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/kernel/resource.c b/kernel/resource.c
    index 268b5fa..ab758bb 100644
    --- a/kernel/resource.c
    +++ b/kernel/resource.c
    @@ -589,6 +589,9 @@ static struct resource * __insert_resource(struct resource *parent, struct resou
    {
    struct resource *first, *next;

    + if (new->flags & IORESOURCE_MEM && !new->start && !new->end)
    + pr_warn("inserting NULL resource %s %pR", new->name, new);
    +
    for (;; parent = first) {
    first = __request_resource(parent, new);
    if (!first)
    --
    1.7.12.3


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