Re: [PATCH v6 11/16] scripts: kernel-doc: validate kernel-doc markup with the actual names

Em Mon, 18 Jan 2021 13:35:45 -0700
Jonathan Corbet [off-list ref] escreveu:

On Thu, 14 Jan 2021 09:04:47 +0100
Mauro Carvalho Chehab [off-list ref] wrote:

quoted

Kernel-doc currently expects that the kernel-doc markup to come
just before the function/enum/struct/union/typedef prototype.

Yet, if it find things like:

	/**
	 * refcount_add - add a value to a refcount
	 * @i: the value to add to the refcount
	 * @r: the refcount
	 */
	static inline void __refcount_add(int i, refcount_t *r, int *oldp);
	static inline void refcount_add(int i, refcount_t *r);

Kernel-doc will do the wrong thing:

	foobar.h:6: warning: Function parameter or member 'oldp' not described in '__refcount_add'
	.. c:function:: void __refcount_add (int i, refcount_t *r, int *oldp)

	   add a value to a refcount

	**Parameters**

	``int i``
	  the value to add to the refcount

	``refcount_t *r``
	  the refcount

	``int *oldp``
	  *undescribed*

Basically, it will document "__refcount_add" with the kernel-doc
markup for refcount_add.

If both functions have the same arguments, this won't even
produce any warning!

Add a logic to check if the kernel-doc identifier matches the actual
name of the C function or data structure that will be documented.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>  

I've applied this one; 

Thanks!

it seems useful to have even if it creates more
warnings that Stephen will duly email me about tomorrow...:)  I have parts
1-10 set aside and will apply any that don't get picked up directly by the
maintainers involved.

Yeah, new warnings are unavoidable, as new patches may be introducing
extra issues. Hopefully, the new warning will help people to detect
the issue earlier before submitting upstream.


Thanks,
Mauro