kernel/drivers/rtc/rtc-sysfs.c, branch linux-rolling-stable

rtc: rename core files

2018-12-31T10:36:16Z

Rename core files so there is a clearer separation between the RTC core and the RTC drivers. Signed-off-by: Alexandre Belloni

rtc: Switch to use %ptR

2018-12-10T21:39:37Z

Use %ptR instead of open coded variant to print content of struct rtc_time in human readable format. Note, we drop the validation option. This is only used in a deprecated ABI and is mostly wrong as many RTCs will still be valid after 2100. Cc: Arnd Bergmann Acked-by: Greg Kroah-Hartman Signed-off-by: Andy Shevchenko Signed-off-by: Alexandre Belloni

rtc: sysfs: fix NULL check in rtc_add_groups()

2018-08-27T21:03:34Z

devm_kcalloc() returns NULL, it never returns error pointers. In the current code we would return PTR_ERR(NULL) which is success, instead of returning the -ENOMEM error code. Fixes: a0a1a1ba3032 ("rtc: sysfs: facilitate attribute add to rtc device") Signed-off-by: Dan Carpenter Signed-off-by: Alexandre Belloni

rtc: sysfs: facilitate attribute add to rtc device

2018-08-14T20:56:27Z

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

rtc: Add RTC range

2018-03-17T13:20:54Z

Add a way for drivers to inform the core of the supported date/time range. The core can then check whether the date/time or alarm is in the range before calling ->set_time, ->set_mmss or ->set_alarm. It returns -ERANGE when the time is out of range. Signed-off-by: Alexandre Belloni

rtc: sysfs: Use time64_t variables to set time/alarm

2017-11-10T08:57:38Z

Use time64_t variables and related APIs for sysfs interfaces to support setting time or alarm after the year 2038 on 32-bit system. Signed-off-by: Baolin Wang Reviewed-by: Arnd Bergmann Signed-off-by: Alexandre Belloni

rtc: sysfs: make name uniform

2017-06-03T08:52:04Z

The name sysfs attribute is not useful in its current form because of all the drivers: - 3 are using the feature correctly - 2 are clearly misusing it - 60 are using driver.name, either directly or indirectly - 46 are using pdev->name - 8 are using client->name - 31 are using a variation of driver.name (addition or removal of rtc-, -rtc, _rtc, rtc_) Make it uniform and use the driver name and the device name. Signed-off-by: Alexandre Belloni

rtc: sysfs: fix a cast removing the const attribute

2016-08-31T16:21:35Z

The char pointer buf_ptr is assigned an address from a const char pointer buf (parameter of wakealarm_store). The data pointer by buf_ptr is never modified. So casting it to a (char *) is useless. This patch remove this cast, and transform buf_ptr to a const char pointer. Signed-off-by: LABBE Corentin Signed-off-by: Alexandre Belloni

rtc: implement a sysfs interface for clock offset

2016-03-14T16:08:16Z

clock offset may be set and read in decimal parts per billion attribute is /sys/class/rtc/rtcN/offset The attribute is only visible for rtcs that have set_offset implemented. Signed-off-by: Joshua Clayton Signed-off-by: Alexandre Belloni

rtc: Replace simple_strtoul by kstrtoul

2016-01-11T19:20:02Z

The simple_strtoul function is obsolete. This patch replace it by kstrtoul. Since kstrtoul is more strict, it permits to filter some invalid input that simple_strtoul accept. For example: echo '1022xxx' > /sys/devices/pnp0/00:03/rtc/rtc0/max_user_freq cat /sys/devices/pnp0/00:03/rtc/rtc0/max_user_freq 1022 Signed-off-by: LABBE Corentin Signed-off-by: Alexandre Belloni