Messages in this thread | | | Date | Tue, 13 Oct 2015 11:33:13 -0700 | Subject | Re: [PATCH] regmap: Add a config option for making regmap debugfs writable | From | Anatol Pomozov <> |
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Hi
On Tue, Oct 13, 2015 at 10:55 AM, Mark Brown <broonie@kernel.org> wrote: > This is deliberately not a Kconfig option because it is a terrible idea > to do this in production and making it either selectable or the default > is an invitation to abuse.
What kind of abuse are you talking about?
Having an easy way of modifying chip registers is extremely useful during bringup / driver development. And during device development phase I regularly have situations when I need to change a register to see if it fixes an issue. Sometimes I need to test it remotely when users located at another end of the Earth.
Current kernel source suggests I need to modify regmap-debugfs.c directly. But my kernel tree is shared by multiply products and some of the products in production already. I do not want to enable writable remap for production products. I would like to have a per-product compile-time configuration and .config serves exactly this purpose.
> We want to place a barrier here so that > users know that this is something that they have taken a decision to > enable, not something that is in any way supported (this is also why we > taint the kernel when people do write).
Honestly I am not convinced. Why to put obstacles on a feature that is very useful during development?
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