Re: [PATCH 04/15] staging: rtl8723bs: put parentheses on macros with complex values in include/basic_types.h

From: Fabio Aiuto
Date: Fri Mar 26 2021 - 07:13:37 EST


On Fri, Mar 26, 2021 at 01:04:08PM +0300, Dan Carpenter wrote:
> On Fri, Mar 26, 2021 at 10:09:11AM +0100, Fabio Aiuto wrote:
> > fix the following checkpatch warnings:
> >
> > ERROR: Macros with complex values should be enclosed in parentheses
> > 154: FILE: drivers/staging/rtl8723bs/include/basic_types.h:154:
> > +#define SET_BITS_TO_LE_4BYTE(__pstart, __bitoffset, __bitlen, __val) \
> > --
> > ERROR: Macros with multiple statements should be enclosed in
> > a do - while loop
> > 161: FILE: drivers/staging/rtl8723bs/include/basic_types.h:161:
> > +#define SET_BITS_TO_LE_2BYTE(__pstart, __bitoffset, __bitlen, __val) \
> > --
> > ERROR: Macros with complex values should be enclosed in parentheses
> > 168: FILE: drivers/staging/rtl8723bs/include/basic_types.h:168:
> > +#define SET_BITS_TO_LE_1BYTE(__pstart, __bitoffset, __bitlen, __val) \
> >
> > parentheses solution preferred for all fixes and made macros more
> > readables
> >
> > Signed-off-by: Fabio Aiuto <fabioaiuto83@xxxxxxxxx>
> > ---
> > .../staging/rtl8723bs/include/basic_types.h | 30 +++++++++++--------
> > 1 file changed, 18 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/staging/rtl8723bs/include/basic_types.h b/drivers/staging/rtl8723bs/include/basic_types.h
> > index 76304086107a..5054c2e3384c 100644
> > --- a/drivers/staging/rtl8723bs/include/basic_types.h
> > +++ b/drivers/staging/rtl8723bs/include/basic_types.h
> > @@ -152,24 +152,30 @@
> > /* Set subfield of little-endian 4-byte value to specified value. */
> > /* */
> > #define SET_BITS_TO_LE_4BYTE(__pstart, __bitoffset, __bitlen, __val) \
> > - *((u32 *)(__pstart)) = \
> > - ( \
> > - LE_BITS_CLEARED_TO_4BYTE(__pstart, __bitoffset, __bitlen) | \
> > - ((((u32)__val) & BIT_LEN_MASK_32(__bitlen)) << (__bitoffset)) \
> > + (\
> > + *((u32 *)(__pstart)) = \
> > + ( \
> > + LE_BITS_CLEARED_TO_4BYTE(__pstart, __bitoffset, __bitlen) | \
> > + ((((u32)__val) & BIT_LEN_MASK_32(__bitlen)) << (__bitoffset)) \
> > + )\
> > )
> >
>
> These macros are terrible and this makes it uglier. Better to just
> ignore checkpatch until we can figure out a way to re-write this
> properly.
>
> regards,
> dan carpenter
>

I see, will drop the patch for now.

thanks,

fabio