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 <[email protected]> --- drivers/base/regmap/regcache-rbtree.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index 0fccc99..87aa318 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -325,8 +325,8 @@ regcache_rbtree_node_alloc(struct regmap *map, unsigned int reg) 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 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, 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; } -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
