user/sven/linux.git/drivers/rtc/nvmem.c, branch v5.7

rtc: core: correct trivial checkpatch warnings

2019-04-04T08:07:08Z

Correct trivial checkpatch warnings, mostly whitespace issues and unbalanced braces. Signed-off-by: Alexandre Belloni

rtc: convert core to SPDX identifier

2019-03-18T02:36:01Z

Use SPDX-License-Identifier instead of a verbose license text. Also fix the block comment alignment. Signed-off-by: Alexandre Belloni

rtc: nvmem: fix possible use after free

2018-12-30T23:49:36Z

In cas of probe failure, devres may free the memory allocated for rtc->nvram before devm_rtc_release_device() is called. This leads to rtc_nvram_unregister using it after being freed which may lead to a crash. This has been shown to happen after commit 461e557b9727 ("rtc: nvmem: use devm_nvmem_register()") Reported-by: kernel test robot Signed-off-by: Alexandre Belloni

rtc: nvmem: remove nvmem from struct rtc_device

2018-11-22T17:10:07Z

Using devm_nvmem_register allows to avoid tracking the nvmem pointer in the rtc_device structure. This ultimately allows to register multiple nvmem devices from an RTC driver. Signed-off-by: Alexandre Belloni

rtc: nvmem: use devm_nvmem_register()

2018-11-22T17:10:04Z

Use the resource managed variant of nvmem_register(). Signed-off-by: Alexandre Belloni

rtc: nvmem: don't use IS_ERR_OR_NULL

2018-05-21T20:34:38Z

nvmem_register() never returns NULL, so IS_ERR is good enough here. Signed-off-by: Uwe Kleine-König Signed-off-by: Alexandre Belloni

rtc: export rtc_nvmem_register() to drivers

2018-03-01T09:49:15Z

Export rtc_nvmem_register() so it can be called from drivers instead of only the core. Signed-off-by: Alexandre Belloni

rtc: nvmem: allow registering the nvmem device before the rtc

2018-03-01T09:49:14Z

Switch the parent of the nvmem device to the parent of the rtc device so it can be registered before the RTC. This is a small change in the ABI as the nvmem moves out of the /sys/class/rtc/rtcX folder to be under the parent device folder (that is where the previous nvram files where registered). However, it is still available under its correct location, /sys/bus/nvmem/devices which is the one that should be used by userspace applications. The other benefit is that the nvmem device can stay registered even if the rtc registration fails. Or it is possible to not register the rtc if the nvmem registration failed. Finally, it makes a lot of sense for devices that actually have different i2c or spi addresses for the RTC and the EEPROM. That is basically how it would end up when using MFD or even completely separate devices. Signed-off-by: Alexandre Belloni

rtc: nvmem: disallow registering nvmem more than once

2018-02-14T19:58:16Z

Make rtc_nvmem_register return -EBUSY when an nvmem is already registered for that RTC. Signed-off-by: Alexandre Belloni

rtc: nvmem: return error values

2018-02-14T19:58:13Z

In case of error, make rtc_nvmem_register() able to return an error value to its caller. Signed-off-by: Alexandre Belloni