This is a note to let you know that I've just added the patch titled
regmap: regcache-rbtree: Fix present bitmap resize
to the 3.19-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-regcache-rbtree-fix-present-bitmap-resize.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 328f494d95aac8bd4896aea2328bc281053bcb71 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
Date: Sat, 7 Mar 2015 17:10:01 +0100
Subject: regmap: regcache-rbtree: Fix present bitmap resize
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
commit 328f494d95aac8bd4896aea2328bc281053bcb71 upstream.
When inserting a new register into a block at the lower end the present
bitmap is currently shifted into the wrong direction. The effect of this is
that the bitmap becomes corrupted and registers which are present might be
reported as not present and vice versa.
Fix this by shifting left rather than right.
Fixes: 472fdec7380c("regmap: rbtree: Reduce number of nodes, take 2")
Reported-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/regmap/regcache-rbtree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -307,7 +307,7 @@ static int regcache_rbtree_insert_to_blo
if (pos == 0) {
memmove(blk + offset * map->cache_word_size,
blk, rbnode->blklen * map->cache_word_size);
- bitmap_shift_right(present, present, offset, blklen);
+ bitmap_shift_left(present, present, offset, blklen);
}
/* update the rbnode block, its size and the base register */
Patches currently in stable-queue which might be from lars@xxxxxxxxxx are
queue-3.19/asoc-da732x-fix-control-less-dapm-routes.patch
queue-3.19/regmap-regcache-rbtree-fix-present-bitmap-resize.patch
queue-3.19/asoc-ak4671-fix-control-less-dapm-routes.patch
queue-3.19/asoc-adav80x-fix-wrong-value-references-for-boolean-kctl.patch
queue-3.19/asoc-sn95031-fix-control-less-dapm-routes.patch
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