On Thu, Apr 22, 2021 at 1:37 AM Luca Ceresoli <l...@lucaceresoli.net> wrote:
> Hello, > > despite having been searching for documentation I couldn't find out the > exact and detailed difference between the .shutdown() and .remove() > calls in struct device_driver. > > so, I'll start by saying I know next to nothing, but most of what you said sounds good > From the above it looks like the shutdown() actions must be a subset of > remove() actions. > > but subset is a bit vague. theres 2 dimensions to think about. lifetime - shutdown/startup is surely the longer window, add/remove happen within that hierarchy - subsystems must be ready to handle add / remove fwiw, I 'grepped' (with ack), it shows a few drivers with both functions, many others with just remove you could see in detail what the difference is. $> ack '(\.remove|\.shutdown)\b' drivers/ drivers/rtc/rtc-twl.c 645: .remove = twl_rtc_remove, 646: .shutdown = twl_rtc_shutdown, > >
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