diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-07 09:56:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-04-07 09:56:00 -0700 |
| commit | f4e52e7ffdea791c89494752b175b991090f0920 (patch) | |
| tree | 5ba632b8127ebc1a71f52102ef59d44c41eeb67b /drivers/base | |
| parent | a3fac08085136fb8b56bbd290500ed03c94ee5d1 (diff) | |
| parent | c04c1b9ee8f30c7a3a25e20e406247003f634ebe (diff) | |
Merge tag 'regmap-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull two more small regmap fixes from Mark Brown:
- Now we have users for it that aren't running Android it turns out
that regcache_sync_region() is much more useful to drivers if it's
exported for use by modules. Who knew?
- Make sure we don't divide by zero when doing debugfs dumps of
rbtrees, not visible up until now because everything was providing at
least some cache on startup.
* tag 'regmap-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: prevent division by zero in rbtree_show
regmap: Export regcache_sync_region()
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regcache-rbtree.c | 8 | ||||
| -rw-r--r-- | drivers/base/regmap/regcache.c | 1 |
2 files changed, 8 insertions, 1 deletions
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index fb14a6343d4..92b779ee002 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -138,6 +138,7 @@ static int rbtree_show(struct seq_file *s, void *ignored) unsigned int base, top; int nodes = 0; int registers = 0; + int average; mutex_lock(&map->lock); @@ -152,8 +153,13 @@ static int rbtree_show(struct seq_file *s, void *ignored) registers += top - base + 1; } + if (nodes) + average = registers / nodes; + else + average = 0; + seq_printf(s, "%d nodes, %d registers, average %d registers\n", - nodes, registers, registers / nodes); + nodes, registers, average); mutex_unlock(&map->lock); diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 87f54dbf601..74b69095def 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -346,6 +346,7 @@ out: return ret; } +EXPORT_SYMBOL_GPL(regcache_sync_region); /** * regcache_cache_only: Put a register map into cache only mode |