[PATCH v4 4/4] Input: charlieplex_keypad: add GPIO charlieplex keypad

[Andy Shevchenko]

On Tue, Mar 10, 2026 at 06:37:34PM +0000, Dmitry Torokhov wrote:
> On Fri, Mar 06, 2026 at 04:21:09PM +0200, Andy Shevchenko wrote:
> > On Thu, Mar 05, 2026 at 02:20:50PM -0500, Hugo Villeneuve wrote:

...

> > > +	int oline;
> > 
> > Why signed?
> > 
> > > +	int code;
> > > +
> > > +	for (code = 0, oline = 0; oline < keypad->nlines; oline++) {
> > 
> > Can be like
> > 
> > 	code = 0;
> > 	for (unsigned int oline = 0; oline < keypad->nlines; oline++) {
> > 
> > as iterator is not used outside the loop.
> > 
> > > +		DECLARE_BITMAP(values, MATRIX_MAX_ROWS);
> > 
> > > +		int iline;
> > 
> > Why signed?
> 
> Does it make any difference given practical limits on nlines?

Maybe not, but might lead to interesting bugs in the future in case if used in
some arithmetics.

-- 
With Best Regards,
Andy Shevchenko