Re: [PATCH v5] staging: greybus: use %pe in error messages

[Yalagada Pavan Kumar]

On Mon, Oct 19, 2026 at 09:16:14AM +0200, Johan Hovold wrote:
> On Sun, Oct 18, 2026 at 02:19:25PM +0530, pavankumaryalagada@xxxxxxxxx wrote:
> > From: Yalagada Pavan Kumar <pavankumaryalagada@xxxxxxxxx>
> > 
> > Use %pe to print the error pointer directly and display its
> > error name.
> > 
> > Keep PTR_ERR() calls when the numeric error value is needed
> > for returning the error code.
> > 
> > Signed-off-by: Yalagada Pavan Kumar <pavankumaryalagada@xxxxxxxxx>
> > Reviewed-by: Alex Elder <elder@xxxxxxxxxxxx>
> > ---
> > v5:
> > - Drop arche-apb-ctrl.c and arche-platform.c changes because the
> >   files were removed.
> > - keep only the uart.c change, as the fw-core.c changes are already
> >   present in staging/staging-next.
> 
> The commit summary (Subject) is a bit misleading now.
> 
> > diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
> > index d47f00751e7a..74c9898c0eed 100644
> > --- a/drivers/staging/greybus/uart.c
> > +++ b/drivers/staging/greybus/uart.c
> > @@ -956,7 +956,7 @@ static int gb_tty_init(void)
> >  	gb_tty_driver = tty_alloc_driver(GB_NUM_MINORS, TTY_DRIVER_REAL_RAW |
> >  					 TTY_DRIVER_DYNAMIC_DEV);
> >  	if (IS_ERR(gb_tty_driver)) {
> > -		pr_err("Can not allocate tty driver\n");
> > +		pr_err("Can not allocate tty driver: %pe\n", gb_tty_driver);
> 
> There's really no need to print the errno here as it will always be
> -ENOMEM if we ever hit it. You could even remove the error message
> completely.

Since the error message is no longer needed, I will remove it in a separate
patch rather than in this revision.

Thanks,
Pavan

> 
> >  		retval = PTR_ERR(gb_tty_driver);
> >  		goto fail_unregister_dev;
> >  	}
> 
> Johan