Re: [PATCH -next v3] rtc: fsl-ftm-alarm: Use module_init and add module_exit
From: Rasmus Villemoes
Date: Mon Sep 05 2022 - 09:18:02 EST
On 05/09/2022 08.26, Zhang Jianhua wrote:
> fsl-ftm-alarm driver can be built out of tree, so change the
> macro device_initcall() to module_init() for standard usage.
"out of tree" usually refers to modules that are not part of the
mainline kernel.
"can be built as a module" is more accurate and less confusing.
> fsl-ftm-alarm registers a platform driver in module_init function,
> however there is no module_exit function to unregister it, and it will
> occur resource leak, so add ftm_alarm_exit() function for module_exit.
It seems that you can avoid a lot of boilerplate using the
module_platform_driver macro. The single line
module_platform_driver(ftm_rtc_driver);
should/could replace the ftm_alarm_init/ftm_alarm_exit functions and the
explicit module_init()/module_exit() lines.
Rasmus