[PATCH] regmap: No multi_write support if bus->write does not exist
From: Markus Pargmann
Date: Fri Aug 21 2015 - 04:26:43 EST
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 <mpa@xxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
drivers/base/regmap/regmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index bc82fd3..27456c7 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;
--
2.5.0
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