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author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-10-19 22:49:36 +0200 |
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committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-10-19 22:56:01 +0200 |
commit | 580daaf43afc7024d10d23021093e9e76181e338 (patch) | |
tree | 184ecf4a45efbf16474f955fcd6f8c0718c5ce7c /drivers/rtc | |
parent | f308b682028a34874a376da649f99e7531dea15c (diff) | |
download | linux-580daaf43afc7024d10d23021093e9e76181e338.tar.gz linux-580daaf43afc7024d10d23021093e9e76181e338.tar.bz2 linux-580daaf43afc7024d10d23021093e9e76181e338.zip |
rtc: ds1343: use rtc_add_group
Use rtc_add_group to add the sysfs group in a race free manner.
This has the side effect of moving the files to their proper location.
Link: https://lore.kernel.org/r/20191019204941.6203-4-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/rtc-ds1343.c | 47 |
1 files changed, 16 insertions, 31 deletions
diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index 8a4f1fbb57fd..ec8d1e82d7ac 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -90,7 +90,7 @@ struct ds1343_priv { static ssize_t ds1343_show_glitchfilter(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1343_priv *priv = dev_get_drvdata(dev); + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); int glitch_filt_status, data; regmap_read(priv->map, DS1343_CONTROL_REG, &data); @@ -107,7 +107,7 @@ static ssize_t ds1343_store_glitchfilter(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct ds1343_priv *priv = dev_get_drvdata(dev); + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); int data; regmap_read(priv->map, DS1343_CONTROL_REG, &data); @@ -148,7 +148,7 @@ static int ds1343_nvram_read(void *priv, unsigned int off, void *val, static ssize_t ds1343_show_tricklecharger(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1343_priv *priv = dev_get_drvdata(dev); + struct ds1343_priv *priv = dev_get_drvdata(dev->parent); int data; char *diodes = "disabled", *resistors = " "; @@ -189,28 +189,15 @@ static ssize_t ds1343_show_tricklecharger(struct device *dev, static DEVICE_ATTR(trickle_charger, S_IRUGO, ds1343_show_tricklecharger, NULL); -static int ds1343_sysfs_register(struct device *dev) -{ - int err; - - err = device_create_file(dev, &dev_attr_glitch_filter); - if (err) - return err; - - err = device_create_file(dev, &dev_attr_trickle_charger); - if (!err) - return 0; - - device_remove_file(dev, &dev_attr_glitch_filter); - - return err; -} +static struct attribute *ds1343_attrs[] = { + &dev_attr_glitch_filter.attr, + &dev_attr_trickle_charger.attr, + NULL +}; -static void ds1343_sysfs_unregister(struct device *dev) -{ - device_remove_file(dev, &dev_attr_glitch_filter); - device_remove_file(dev, &dev_attr_trickle_charger); -} +static const struct attribute_group ds1343_attr_group = { + .attrs = ds1343_attrs, +}; static int ds1343_read_time(struct device *dev, struct rtc_time *dt) { @@ -474,6 +461,11 @@ static int ds1343_probe(struct spi_device *spi) priv->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; priv->rtc->range_max = RTC_TIMESTAMP_END_2099; + res = rtc_add_group(priv->rtc, &ds1343_attr_group); + if (res) + dev_err(&spi->dev, + "unable to create sysfs entries for rtc ds1343\n"); + res = rtc_register_device(priv->rtc); if (res) return res; @@ -497,11 +489,6 @@ static int ds1343_probe(struct spi_device *spi) } } - res = ds1343_sysfs_register(&spi->dev); - if (res) - dev_err(&spi->dev, - "unable to create sysfs entries for rtc ds1343\n"); - return 0; } @@ -521,8 +508,6 @@ static int ds1343_remove(struct spi_device *spi) spi_set_drvdata(spi, NULL); - ds1343_sysfs_unregister(&spi->dev); - return 0; } |