regmap: Return a sensible error code if we fail to read the cache
If a register isn't cached then let callers know that so they can fall
back or error handle appropriately.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index ad6af92..066aeec 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -232,7 +232,6 @@
size_t blksize, tmp_dst_len;
void *tmp_dst;
- *value = 0;
/* index of the compressed lzo block */
blkindex = regcache_lzo_get_blkindex(map, reg);
/* register index within the decompressed block */
@@ -261,7 +260,8 @@
/* restore the pointer and length of the compressed block */
lzo_block->dst = tmp_dst;
lzo_block->dst_len = tmp_dst_len;
- return 0;
+
+ return ret;
}
static int regcache_lzo_write(struct regmap *map,