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rtc: ds1685: use rtc_add_group

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Use rtc_add_group to add the sysfs group in a race free manner.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2018-09-19 19:52:11 +02:00
parent 482419e120
commit cfb74916e2
1 changed files with 1 additions and 39 deletions
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40
drivers/rtc/rtc-ds1685.c
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@ -995,7 +995,6 @@ static int ds1685_nvram_write(void *priv, unsigned int pos, void *val,
/* ----------------------------------------------------------------------- */
/* SysFS interface */
#ifdef CONFIG_SYSFS
/**
* ds1685_rtc_sysfs_battery_show - sysfs file for main battery status.
* @dev: pointer to device structure.
@ -1079,37 +1078,6 @@ ds1685_rtc_sysfs_misc_grp = {
.attrs = ds1685_rtc_sysfs_misc_attrs,
};
/**
* ds1685_rtc_sysfs_register - register sysfs files.
* @dev: pointer to device structure.
*/
static int
ds1685_rtc_sysfs_register(struct device *dev)
{
int ret = 0;
ret = sysfs_create_group(&dev->kobj, &ds1685_rtc_sysfs_misc_grp);
if (ret)
return ret;
return 0;
}
/**
* ds1685_rtc_sysfs_unregister - unregister sysfs files.
* @dev: pointer to device structure.
*/
static int
ds1685_rtc_sysfs_unregister(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &ds1685_rtc_sysfs_misc_grp);
return 0;
}
#endif /* CONFIG_SYSFS */
/* ----------------------------------------------------------------------- */
/* Driver Probe/Removal */
@ -1390,11 +1358,9 @@ ds1685_rtc_probe(struct platform_device *pdev)
/* Setup complete. */
ds1685_rtc_switch_to_bank0(rtc);
#ifdef CONFIG_SYSFS
ret = ds1685_rtc_sysfs_register(&pdev->dev);
ret = rtc_add_group(rtc_dev, &ds1685_rtc_sysfs_misc_grp);
if (ret)
return ret;
#endif
rtc_dev->nvram_old_abi = true;
nvmem_cfg.priv = rtc;
@ -1414,10 +1380,6 @@ ds1685_rtc_remove(struct platform_device *pdev)
{
struct ds1685_priv *rtc = platform_get_drvdata(pdev);
#ifdef CONFIG_SYSFS
ds1685_rtc_sysfs_unregister(&pdev->dev);
#endif
/* Read Ctrl B and clear PIE/AIE/UIE. */
rtc->write(rtc, RTC_CTRL_B,
(rtc->read(rtc, RTC_CTRL_B) &