3.3-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stephen Warren <[email protected]> commit c04c1b9ee8f30c7a3a25e20e406247003f634ebe upstream. If there are no nodes in the cache, nodes will be 0, so calculating "registers / nodes" will cause division by zero. Signed-off-by: Stephen Warren <[email protected]> Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/base/regmap/regcache-rbtree.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -137,6 +137,7 @@ static int rbtree_show(struct seq_file * unsigned int base, top; int nodes = 0; int registers = 0; + int average; mutex_lock(&map->lock); @@ -151,8 +152,13 @@ static int rbtree_show(struct seq_file * 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); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
