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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2018-02-28 21:58:02 +0100
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2018-03-01 10:49:14 +0100
commitac75779b72fd52741d7446ad27cf6d58c006c643 (patch)
treea19d4ef74bb376700a4ab5b76fccf1ccd1e5754a /drivers/rtc/nvmem.c
parentab3ea36eda76069ba52e9b6aef5a9370b0b462bf (diff)
downloadlinux-ac75779b72fd52741d7446ad27cf6d58c006c643.tar.bz2
rtc: nvmem: allow registering the nvmem device before the rtc
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 <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/nvmem.c')
-rw-r--r--drivers/rtc/nvmem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rtc/nvmem.c b/drivers/rtc/nvmem.c
index fd1c39a5ade5..eb8c622cfcf4 100644
--- a/drivers/rtc/nvmem.c
+++ b/drivers/rtc/nvmem.c
@@ -93,7 +93,7 @@ int rtc_nvmem_register(struct rtc_device *rtc,
if (!nvmem_config)
return -ENODEV;
- nvmem_config->dev = &rtc->dev;
+ nvmem_config->dev = rtc->dev.parent;
nvmem_config->owner = rtc->owner;
rtc->nvmem = nvmem_register(nvmem_config);
if (IS_ERR_OR_NULL(rtc->nvmem))