resources: Set type in __request_region()
We don't set the type (I/O, memory, etc.) of resources added by
__request_region(), which leads to confusing messages like this:
address space collision: [io 0x1000-0x107f] conflicts with ACPI CPU throttle [??? 0x00001010-0x00001015 flags 0x80000000]
Set the type of a new resource added by __request_region() (used by
request_region() and request_mem_region()) to the type of its parent. This
makes the resource tree internally consistent and fixes messages like the
above, where the ACPI CPU throttle resource really is an I/O port region,
but request_region() didn't fill in the type, so %pR didn't know how to
print it.
Sample dmesg showing the issue at the link below.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=71611
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>diff --git a/kernel/resource.c b/kernel/resource.c
index a8344dd..673061c 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -945,8 +945,8 @@
res->name = name;
res->start = start;
res->end = start + n - 1;
- res->flags = IORESOURCE_BUSY;
- res->flags |= flags;
+ res->flags = resource_type(parent);
+ res->flags |= IORESOURCE_BUSY | flags;
write_lock(&resource_lock);