Re: [PATCH] staging: greybus: loopback: enclose macro statements in do-while loop

From: Deepak R Varma
Date: Sun Oct 16 2022 - 11:28:05 EST


On Sun, Oct 16, 2022 at 05:10:17PM +0200, Julia Lawall wrote:
>
>
> On Sun, 16 Oct 2022, Deepak R Varma wrote:
>
> > On Sun, Oct 16, 2022 at 04:51:09PM +0200, Julia Lawall wrote:
> > >
> > >
> > > On Sun, 16 Oct 2022, Deepak R Varma wrote:
> > >
> > > > Include multiple statements of macro definition inside do-while{0} loop
> > > > to avoid possible partial program execution. Issue reported by
> > > > checkpatch script:
> > > >
> > > > ERROR: Macros with multiple statements should be enclosed in a do - while loop
> > >
> > > I don't think this change will compile. See if you can figure out why
> > > not.
> >
> > It did compile. I built the greybus driver and loaded it as well with the
> > modinfo tool. Can you please tell why you think it won't compile?
>
> Do you have a .o file for the .c file that you changed?

I see many .o files and a greybus.ko as well, but not the loopback.o
Am I missing anything with my configuration? I did set Greybus Support to (M) in
the menuconfig.

Thank you,
./drv

>
> julia
>
> >
> > ./drv
> >
> > >
> > > julia
> > >
> > > >
> > > > Signed-off-by: Deepak R Varma <drv@xxxxxxxxx>
> > > > ---
> > > > drivers/staging/greybus/loopback.c | 4 +++-
> > > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/staging/greybus/loopback.c b/drivers/staging/greybus/loopback.c
> > > > index 1a61fce98056..37214cb43937 100644
> > > > --- a/drivers/staging/greybus/loopback.c
> > > > +++ b/drivers/staging/greybus/loopback.c
> > > > @@ -163,9 +163,11 @@ static ssize_t name##_avg_show(struct device *dev, \
> > > > static DEVICE_ATTR_RO(name##_avg)
> > > >
> > > > #define gb_loopback_stats_attrs(field) \
> > > > +do { \
> > > > gb_loopback_ro_stats_attr(field, min, u); \
> > > > gb_loopback_ro_stats_attr(field, max, u); \
> > > > - gb_loopback_ro_avg_attr(field)
> > > > + gb_loopback_ro_avg_attr(field); \
> > > > +} while (0)
> > > >
> > > > #define gb_loopback_attr(field, type) \
> > > > static ssize_t field##_show(struct device *dev, \
> > > > --
> > > > 2.30.2
> > > >
> > > >
> > > >
> > > >
> > > >
> >
> >
> >
>