[PATCH 08/20] regmap: Fix regmap_can_raw_write check

Markus Pargmann
2015-08-12T10:21:26Z

This function is missing a check if map->bus->write is implemented. If
it is not implemented arbitrary raw writes are not possible.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/base/regmap/regmap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 35ad3783da70..510dab052a95 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1382,7 +1382,8 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg,
*/
bool regmap_can_raw_write(struct regmap *map)
{
- return map->bus && map->format.format_val && map->format.format_reg;
+ return map->bus && map->bus->write && map->format.format_val &&
+ map->format.format_reg;
}
EXPORT_SYMBOL_GPL(regmap_can_raw_write);

--
2.4.6