[PATCH] regcache: Always make cache_present big enough for max_register

[Mark Brown]

There is no point in continually reallocating the cache_present bitmap
when we know how big it could possibly be.

Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
 drivers/base/regmap/regcache.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 8a0ab5f..14c6eef 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -463,6 +463,9 @@ int regcache_set_reg_present(struct regmap *map, unsigned int reg)
 	int i;
 
 	nregs = reg + 1;
+	if (nregs < map->max_register + 1)
+		nregs = map->max_register + 1;
+
 	cache_present_size = BITS_TO_LONGS(nregs);
 	cache_present_size *= sizeof(long);
 
-- 
1.7.10.4

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