Re: [PATCH] clk: imx: imx93: introduce clk_bypassed module parameter

[Greg KH <greg@kroah.com>]

On Wed, May 10, 2023 at 07:49:20AM +0000, Peng Fan wrote:
> 
> > Subject: Re: [PATCH] clk: imx: imx93: introduce clk_bypassed module
> > parameter
> > 
> > On Thu, May 04, 2023 at 04:55:06PM +0800, Peng Fan (OSS) wrote:
> > > From: Peng Fan <peng.fan@nxp.com>
> > >
> > > With the clk names specified in clk_bypassed module parameter, give
> > > user an option to bypass the clk from managing them by Linux kernel.
> > 
> > As I said on another email, no, please do not add new module parameters
> > for drivers, this is not the 1990s
> 
> After a search of the list,
> https://lore.kernel.org/all/?q=module_param
> 
> I still see many drivers are adding module_param.

And they should not be doing so as it is almost always not a good idea
(note, some subsystems, like sound, do require it, as that's the api
they use, so this is not a blanket statement.)

> Is this is strict ban that new platform driver should not add
> module_param?

You need to really really really justify, and document in the changelog
text, why all of the other methods of configuring a platform driver will
not work in order to have it considered.

thanks,

greg k-h