This is a note to let you know that I've just added the patch titled
regmap: cache: bail in regmap_async_complete() for bus-less maps
to the 3.10-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:
regmap-cache-bail-in-regmap_async_complete-for-bus-less-maps.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f2e055e7c9c6084bfbaa68701e52562acf96419e Mon Sep 17 00:00:00 2001
From: Daniel Mack <zonque@xxxxxxxxx>
Date: Thu, 4 Jul 2013 13:11:03 +0200
Subject: regmap: cache: bail in regmap_async_complete() for bus-less maps
From: Daniel Mack <zonque@xxxxxxxxx>
commit f2e055e7c9c6084bfbaa68701e52562acf96419e upstream.
Commit f8bd822cb ("regmap: cache: Factor out block sync") made
regcache_rbtree_sync() call regmap_async_complete(), which in turn does
not check for map->bus before dereferencing it.
This causes a NULL pointer dereference on bus-less maps.
Signed-off-by: Daniel Mack <zonque@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/regmap/regmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1717,7 +1717,7 @@ int regmap_async_complete(struct regmap
int ret;
/* Nothing to do with no async support */
- if (!map->bus->async_write)
+ if (!map->bus || !map->bus->async_write)
return 0;
trace_regmap_async_complete_start(map->dev);
Patches currently in stable-queue which might be from zonque@xxxxxxxxx are
queue-3.10/regmap-cache-bail-in-regmap_async_complete-for-bus-less-maps.patch
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