This is a note to let you know that I've just added the patch titled
of/address: Don't loop forever in of_find_matching_node_by_address().
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
of-address-don-t-loop-forever-in-of_find_matching_node_by_address.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 3a496b00b6f90c41bd21a410871dfc97d4f3c7ab Mon Sep 17 00:00:00 2001
From: David Daney <[email protected]>
Date: Wed, 19 Aug 2015 13:17:47 -0700
Subject: of/address: Don't loop forever in of_find_matching_node_by_address().
From: David Daney <[email protected]>
commit 3a496b00b6f90c41bd21a410871dfc97d4f3c7ab upstream.
If the internal call to of_address_to_resource() fails, we end up
looping forever in of_find_matching_node_by_address(). This can be
caused by a defective device tree, or calling with an incorrect
matches argument.
Fix by calling of_find_matching_node() unconditionally at the end of
the loop.
Signed-off-by: David Daney <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/of/address.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -845,10 +845,10 @@ struct device_node *of_find_matching_nod
struct resource res;
while (dn) {
- if (of_address_to_resource(dn, 0, &res))
- continue;
- if (res.start == base_address)
+ if (!of_address_to_resource(dn, 0, &res) &&
+ res.start == base_address)
return dn;
+
dn = of_find_matching_node(dn, matches);
}
Patches currently in stable-queue which might be from [email protected] are
queue-4.2/of-address-don-t-loop-forever-in-of_find_matching_node_by_address.patch
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