diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/runtime.c | 10 | ||||
| -rw-r--r-- | drivers/base/regmap/regcache-rbtree.c | 38 | ||||
| -rw-r--r-- | drivers/base/regmap/regcache.c | 5 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap.c | 2 |
4 files changed, 38 insertions, 17 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index e097d355cc04..17995fadebd7 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -301,7 +301,7 @@ static int rpm_idle(struct device *dev, int rpmflags) int (*callback)(struct device *); int retval; - trace_rpm_idle(dev, rpmflags); + trace_rpm_idle_rcuidle(dev, rpmflags); retval = rpm_check_suspend_allowed(dev); if (retval < 0) ; /* Conditions are wrong. */ @@ -337,7 +337,7 @@ static int rpm_idle(struct device *dev, int rpmflags) dev->power.request_pending = true; queue_work(pm_wq, &dev->power.work); } - trace_rpm_return_int(dev, _THIS_IP_, 0); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, 0); return 0; } @@ -352,7 +352,7 @@ static int rpm_idle(struct device *dev, int rpmflags) wake_up_all(&dev->power.wait_queue); out: - trace_rpm_return_int(dev, _THIS_IP_, retval); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); return retval ? retval : rpm_suspend(dev, rpmflags | RPM_AUTO); } @@ -601,7 +601,7 @@ static int rpm_resume(struct device *dev, int rpmflags) struct device *parent = NULL; int retval = 0; - trace_rpm_resume(dev, rpmflags); + trace_rpm_resume_rcuidle(dev, rpmflags); repeat: if (dev->power.runtime_error) @@ -764,7 +764,7 @@ static int rpm_resume(struct device *dev, int rpmflags) spin_lock_irq(&dev->power.lock); } - trace_rpm_return_int(dev, _THIS_IP_, retval); + trace_rpm_return_int_rcuidle(dev, _THIS_IP_, retval); return retval; } diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index aa56af87d941..b11af3f2c1db 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -404,6 +404,7 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg, unsigned int new_base_reg, new_top_reg; unsigned int min, max; unsigned int max_dist; + unsigned int dist, best_dist = UINT_MAX; max_dist = map->reg_stride * sizeof(*rbnode_tmp) / map->cache_word_size; @@ -423,24 +424,41 @@ static int regcache_rbtree_write(struct regmap *map, unsigned int reg, &base_reg, &top_reg); if (base_reg <= max && top_reg >= min) { - new_base_reg = min(reg, base_reg); - new_top_reg = max(reg, top_reg); - } else { - if (max < base_reg) - node = node->rb_left; + if (reg < base_reg) + dist = base_reg - reg; + else if (reg > top_reg) + dist = reg - top_reg; else - node = node->rb_right; - - continue; + dist = 0; + if (dist < best_dist) { + rbnode = rbnode_tmp; + best_dist = dist; + new_base_reg = min(reg, base_reg); + new_top_reg = max(reg, top_reg); + } } - ret = regcache_rbtree_insert_to_block(map, rbnode_tmp, + /* + * Keep looking, we want to choose the closest block, + * otherwise we might end up creating overlapping + * blocks, which breaks the rbtree. + */ + if (reg < base_reg) + node = node->rb_left; + else if (reg > top_reg) + node = node->rb_right; + else + break; + } + + if (rbnode) { + ret = regcache_rbtree_insert_to_block(map, rbnode, new_base_reg, new_top_reg, reg, value); if (ret) return ret; - rbtree_ctx->cached_rbnode = rbnode_tmp; + rbtree_ctx->cached_rbnode = rbnode; return 0; } diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index df7ff7290821..4e582561e1e7 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -38,10 +38,11 @@ static int regcache_hw_init(struct regmap *map) /* calculate the size of reg_defaults */ for (count = 0, i = 0; i < map->num_reg_defaults_raw; i++) - if (!regmap_volatile(map, i * map->reg_stride)) + if (regmap_readable(map, i * map->reg_stride) && + !regmap_volatile(map, i * map->reg_stride)) count++; - /* all registers are volatile, so just bypass */ + /* all registers are unreadable or volatile, so just bypass */ if (!count) { map->cache_bypass = true; return 0; diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 51fa7d66a393..25d26bb18970 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1474,6 +1474,8 @@ int _regmap_raw_write(struct regmap *map, unsigned int reg, ret = map->bus->write(map->bus_context, buf, len); kfree(buf); + } else if (ret != 0 && !map->cache_bypass && map->format.parse_val) { + regcache_drop_region(map, reg, reg + 1); } trace_regmap_hw_write_done(map, reg, val_len / map->format.val_bytes); |