kernel/drivers/rtc/rtc-vr41xx.c, branch linux-5.1.y

rtc: vr41xx: switch to rtc_time64_to_tm/rtc_tm_to_time64

2018-10-03T09:07:22Z

Call the 64bit versions of rtc_time_to_tm now that the range is enforced by the core. Also remove the open coded rtc_tm_to_time64. Signed-off-by: Alexandre Belloni

rtc: vr41xx: add range

2018-05-17T20:54:21Z

The vr41xx RTC is a 48-bit counter counting at 32.768 kHz, giving a maximum value of 2^(48-15)-1 seconds. Signed-off-by: Alexandre Belloni

rtc: vr41xx: fix possible race condition

2018-05-17T20:54:19Z

The probe function is not allowed to fail after the RTC is registered because the following may happen: CPU0: CPU1: sys_load_module() do_init_module() do_one_initcall() cmos_do_probe() rtc_device_register() __register_chrdev() cdev->owner = struct module* open("/dev/rtc0") rtc_device_unregister() module_put() free_module() module_free(mod->module_core) /* struct module *module is now freed */ chrdev_open() spin_lock(cdev_lock) cdev_get() try_module_get() module_is_live() /* dereferences already freed struct module* */ Signed-off-by: Alexandre Belloni

rtc: vr41xx: remove mktime usage

2018-05-03T20:46:25Z

This driver uses mktime() and rtc_time_to_tm() to convert between time values. This works fine on 64-bit kernels over the whole supported range, and the vr41xx chip is a 64-bit MIPS implementation, but it is inconsistent because it doesn't do the same thing on 32-bit kernels that overflow in 2106 or 2038. Changing it to use mktime64/rtc_time64_to_tm() should have no visible impact on vr41xx but gets us closer to removing the 32-bit interfaces. Signed-off-by: Arnd Bergmann Signed-off-by: Alexandre Belloni

rtc: vr41xx: make alarms useful

2017-08-24T09:03:36Z

Currently, the IRQs are disabled when the rtc character device is closed. This means that the device needs to stay open to get alarms while the usual use case will open the device, set the alarm and close the device. Keep the alarms functional on character device release. Note that the PIE are never enabled and would anyway be disabled by the core. Signed-off-by: Alexandre Belloni

rtc: vr41xx: Wire up alarm_irq_enable

2016-03-14T16:08:25Z

drivers/rtc/rtc-vr41xx.c:229: warning: ‘vr41xx_rtc_alarm_irq_enable’ defined but not used Apparently the conversion to alarm_irq_enable forgot to wire up the callback. Fixes: 16380c153a69c378 ("RTC: Convert rtc drivers to use the alarm_irq_enable method") Signed-off-by: Geert Uytterhoeven Signed-off-by: Alexandre Belloni

rtc: drop owner assignment from platform_drivers

2014-10-20T14:21:31Z

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang

drivers/rtc/rtc-vr41xx.c: use devm_*() functions

2014-01-24T00:36:59Z

Use devm_*() functions to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han Cc: Yoichi Yuasa Cc: Grygorii Strashko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-vr41xx.c: fix checkpatch warnings

2013-11-13T03:09:28Z

Fixes the following warnings: WARNING: Use #include instead of WARNING: Use #include instead of Signed-off-by: Sachin Kamat Cc: Yoichi Yuasa Cc: Jingoo Han Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-vr41xx.c: fix error return code in rtc_probe()

2013-07-03T23:07:54Z

Fix to return -EBUSY in the platform irq get error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds