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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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