regcache-rbtree: Fix reg_stride != 1
There are a couple of calculations, which convert between register addresses and
block indices, in regcache_rbtree_sync() and regcache_rbtree_node_alloc() which
assume that reg_stride is 1. This will break the rb cache for configurations
which do not use a reg_stride of 1.
Also rename 'base' in regcache_rbtree_sync() to 'start' to avoid confusion with
'base_reg'.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index 5c1435c..f2384a8 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -325,8 +325,8 @@
if (i != map->rd_table->n_yes_ranges) {
range = &map->rd_table->yes_ranges[i];
- rbnode->blklen = range->range_max - range->range_min
- + 1;
+ rbnode->blklen = (range->range_max - range->range_min) /
+ map->reg_stride + 1;
rbnode->base_reg = range->range_min;
}
}
@@ -418,30 +418,33 @@
struct regcache_rbtree_ctx *rbtree_ctx;
struct rb_node *node;
struct regcache_rbtree_node *rbnode;
+ unsigned int base_reg, top_reg;
+ unsigned int start, end;
int ret;
- int base, end;
rbtree_ctx = map->cache;
for (node = rb_first(&rbtree_ctx->root); node; node = rb_next(node)) {
rbnode = rb_entry(node, struct regcache_rbtree_node, node);
- if (rbnode->base_reg > max)
+ regcache_rbtree_get_base_top_reg(map, rbnode, &base_reg,
+ &top_reg);
+ if (base_reg > max)
break;
- if (rbnode->base_reg + rbnode->blklen < min)
+ if (top_reg < min)
continue;
- if (min > rbnode->base_reg)
- base = min - rbnode->base_reg;
+ if (min > base_reg)
+ start = (min - base_reg) / map->reg_stride;
else
- base = 0;
+ start = 0;
- if (max < rbnode->base_reg + rbnode->blklen)
- end = max - rbnode->base_reg + 1;
+ if (max < top_reg)
+ end = (max - base_reg) / map->reg_stride + 1;
else
end = rbnode->blklen;
ret = regcache_sync_block(map, rbnode->block, rbnode->base_reg,
- base, end);
+ start, end);
if (ret != 0)
return ret;
}