From: Markus Pargmann Date: Fri, 21 Aug 2015 08:26:43 +0000 (+0200) Subject: regmap: No multi_write support if bus->write does not exist X-Git-Tag: firefly_0821_release~176^2~1107^2~2^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9c9f7f675970ba1b888272f016157de21f69e7e2;p=firefly-linux-kernel-4.4.55.git regmap: No multi_write support if bus->write does not exist There is no multi_write support available if we cannot use raw_write. This is the case if bus->write is not implemented. This patch adds a condition that we need bus and bus->write so that can_multi_write is true. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index bc82fd34483b..27456c7978b9 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -578,7 +578,7 @@ struct regmap *regmap_init(struct device *dev, map->reg_stride = 1; map->use_single_read = config->use_single_rw || !bus || !bus->read; map->use_single_write = config->use_single_rw || !bus || !bus->write; - map->can_multi_write = config->can_multi_write; + map->can_multi_write = config->can_multi_write && bus && bus->write; map->dev = dev; map->bus = bus; map->bus_context = bus_context;