From a0a1a1ba303261d25814d11a05008d2931a69a8b Mon Sep 17 00:00:00 2001 From: Denis Osterland Date: Tue, 24 Jul 2018 11:31:22 +0000 Subject: rtc: sysfs: facilitate attribute add to rtc device This patches addresses following problem: rtc_allocate_device devm_device_add_group <-- kernel oops / null pointer, because sysfs entry does not yet exist rtc_register_device rc = devm_device_add_group if (rc) return rc; <-- forbidden to return error code after device register This patch adds rtc_add_group(s) functions. The functions store the sum of attribute groups as device resource. Signed-off-by: Denis Osterland Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-core.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/rtc/rtc-core.h') diff --git a/drivers/rtc/rtc-core.h b/drivers/rtc/rtc-core.h index 0abf98983e13..ccc17a2e293d 100644 --- a/drivers/rtc/rtc-core.h +++ b/drivers/rtc/rtc-core.h @@ -40,9 +40,23 @@ static inline void rtc_proc_del_device(struct rtc_device *rtc) #ifdef CONFIG_RTC_INTF_SYSFS const struct attribute_group **rtc_get_dev_attribute_groups(void); +int rtc_add_group(struct rtc_device *rtc, const struct attribute_group *grp); +int rtc_add_groups(struct rtc_device *rtc, const struct attribute_group **grps); #else static inline const struct attribute_group **rtc_get_dev_attribute_groups(void) { return NULL; } + +static inline +int rtc_add_group(struct rtc_device *rtc, const struct attribute_group *grp) +{ + return 0; +} + +static inline +int rtc_add_groups(struct rtc_device *rtc, const struct attribute_group **grps) +{ + return 0; +} #endif -- cgit v1.2.3