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Export the RTC time set offset via sysfs so the value can be read and
tweaked as necessary. This is useful when determining the correct
setting for a RTC, as it eliminates the need to rebuild/install/reboot
from the test cycle.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The kstrto<something>() functions have been moved from kernel.h to
kstrtox.h.
So, include the latter directly in the appropriate files.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/786421fd0435a32206288904a1f879436a717529.1667721637.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Fix the following make W=1 kernel build warning:
drivers/rtc/sysfs.c:115: warning: expecting prototype for rtc_sysfs_show_hctosys(). Prototype was for hctosys_show() instead
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210517045901.3461800-1-yangyingliang@huawei.com
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Test RTC_FEATURE_ALARM instead of relying on .set_alarm to know whether
alarms are available.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210429214403.2610952-1-alexandre.belloni@bootlin.com
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rtc_register_device() is a managed interface but it doesn't use devres
by itself - instead it marks an rtc_device as "registered" and the devres
callback for devm_rtc_allocate_device() takes care of resource release.
This doesn't correspond with the design behind devres where managed
structures should not be aware of being managed. The correct solution
here is to register a separate devres callback for unregistering the
device.
While at it: rename rtc_register_device() to devm_rtc_register_device()
and add it to the list of managed interfaces in devres.rst. This way we
can avoid any potential confusion of driver developers who may expect
there to exist a corresponding unregister function.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201109163409.24301-8-brgl@bgdev.pl
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use kobj_to_dev instead of open-conding it
Signed-off-by: suguosong <suguosong@xiaomi.com>
Link: https://lore.kernel.org/r/20200225021923.8570-1-guosongsu@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Fix undocumented function parameters:
drivers/rtc/sysfs.c:112: warning: Function parameter or member 'dev' not described in 'hctosys_show'
drivers/rtc/sysfs.c:112: warning: Function parameter or member 'attr' not described in 'hctosys_show'
drivers/rtc/sysfs.c:112: warning: Function parameter or member 'buf' not described in 'hctosys_show'
Link: https://lore.kernel.org/r/20191122102212.400158-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Correct trivial checkpatch warnings, mostly whitespace issues and
unbalanced braces.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Use SPDX-License-Identifier instead of a verbose license text. Also fix the
block comment alignment.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Rename core files so there is a clearer separation between the RTC core and
the RTC drivers.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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