When resource requests fail, the conflicting resource is not
always apparent. Emit diagnostic print when resource conflicts prevent
resource requests. For example,
kernel: resource: Requested i5k_amb [mem 0xfe000000-0xfe01ffff flags
0x80000000] conflicts with PCI Bus 0000:00 [mem 0xf0000000-0xfe000000 flags
0x200]
Cc: Bjorn Helgaas <bhelg...@google.com>
Signed-off-by: Peter Hurley <pe...@hurleysoftware.com>
---
kernel/resource.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/resource.c b/kernel/resource.c
index 461c2e0..268b5fa 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -924,6 +924,10 @@ struct resource * __request_region(struct resource *parent,
write_lock(&resource_lock);
continue;
}
+
+ pr_debug("Requested %s %pr conflicts with %s %pr\n",
+ res->name, res, conflict->name, conflict);
+
/* Uhhuh, that didn't work out.. */
kfree(res);
res = NULL;
--
1.7.12.3
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