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author | Mark Brown <broonie@kernel.org> | 2017-07-03 16:52:16 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2017-07-03 16:52:16 +0100 |
commit | fcaa3167b2763d35a7dc60c5724f23e441d29f4f (patch) | |
tree | c3a747d7c71b3e79440091e4c068e9c3da5e965f /drivers/regulator | |
parent | 85fd19e432b5ed5357d54f1048a088d9eb5aae94 (diff) | |
parent | dbc559554086f176b04f97eec561ad26ee54e47c (diff) | |
download | linux-fcaa3167b2763d35a7dc60c5724f23e441d29f4f.tar.gz linux-fcaa3167b2763d35a7dc60c5724f23e441d29f4f.tar.bz2 linux-fcaa3167b2763d35a7dc60c5724f23e441d29f4f.zip |
Merge remote-tracking branch 'regulator/topic/core' into regulator-next
Diffstat (limited to 'drivers/regulator')
-rw-r--r-- | drivers/regulator/core.c | 46 |
1 files changed, 18 insertions, 28 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9fecbd4e3546..e9f74331fc69 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1462,7 +1462,7 @@ static struct regulator_dev *regulator_lookup_by_name(const char *name) static struct regulator_dev *regulator_dev_lookup(struct device *dev, const char *supply) { - struct regulator_dev *r; + struct regulator_dev *r = NULL; struct device_node *node; struct regulator_map *map; const char *devname = NULL; @@ -1489,10 +1489,6 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev, if (dev) devname = dev_name(dev); - r = regulator_lookup_by_name(supply); - if (r) - return r; - mutex_lock(®ulator_list_mutex); list_for_each_entry(map, ®ulator_map_list, list) { /* If the mapping has a device set up it must match */ @@ -1511,6 +1507,10 @@ static struct regulator_dev *regulator_dev_lookup(struct device *dev, if (r) return r; + r = regulator_lookup_by_name(supply); + if (r) + return r; + return ERR_PTR(-ENODEV); } @@ -4312,41 +4312,31 @@ void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data) EXPORT_SYMBOL_GPL(regulator_get_init_drvdata); #ifdef CONFIG_DEBUG_FS -static ssize_t supply_map_read_file(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) +static int supply_map_show(struct seq_file *sf, void *data) { - char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); - ssize_t len, ret = 0; struct regulator_map *map; - if (!buf) - return -ENOMEM; - list_for_each_entry(map, ®ulator_map_list, list) { - len = snprintf(buf + ret, PAGE_SIZE - ret, - "%s -> %s.%s\n", - rdev_get_name(map->regulator), map->dev_name, - map->supply); - if (len >= 0) - ret += len; - if (ret > PAGE_SIZE) { - ret = PAGE_SIZE; - break; - } + seq_printf(sf, "%s -> %s.%s\n", + rdev_get_name(map->regulator), map->dev_name, + map->supply); } - ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); - - kfree(buf); + return 0; +} - return ret; +static int supply_map_open(struct inode *inode, struct file *file) +{ + return single_open(file, supply_map_show, inode->i_private); } #endif static const struct file_operations supply_map_fops = { #ifdef CONFIG_DEBUG_FS - .read = supply_map_read_file, - .llseek = default_llseek, + .open = supply_map_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, #endif }; |