linux-kernel - Re: [PATCH] drivers: staging: rtl8188eu: include: wifi: Unnecessary do-while removed from macro

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Date:   Sun, 15 Jan 2017 01:08:15 +0530
From:   Kartikey Singh <dr.kartikeynrc@...il.com>
To:     gregkh@...uxfoundation.org, insafonov@...il.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: staging: rtl8188eu: include: wifi: Unnecessary
 do-while removed from macro

On Sat, Jan 14, 2017 at 07:38:01PM +0100, Greg KH wrote:
> On Sat, Jan 14, 2017 at 11:53:36PM +0530, Kartikey Singh wrote:
> > do while loop removed from single statement macro
> > 
> > Signed-off-by: Kartikey Singh <dr.kartikeynrc@...il.com>
> > ---
> >  drivers/staging/rtl8188eu/include/wifi.h | 4 +---
> >  1 file changed, 1 insertion(+), 3 deletions(-)
> > 
> > diff --git a/drivers/staging/rtl8188eu/include/wifi.h b/drivers/staging/rtl8188eu/include/wifi.h
> > index 9e08e68..57db709 100644
> > --- a/drivers/staging/rtl8188eu/include/wifi.h
> > +++ b/drivers/staging/rtl8188eu/include/wifi.h
> > @@ -481,9 +481,7 @@ static inline int IsFrameTypeCtrl(unsigned char *pframe)
> >  ------------------------------------------------------------------------------*/
> >  
> >  #define SetOrderBit(pbuf)	\
> > -	do	{	\
> > -		*(unsigned short *)(pbuf) |= cpu_to_le16(_ORDER_); \
> > -	} while (0)
> > +	(*(unsigned short *)(pbuf) |= cpu_to_le16(_ORDER_))
> 
> This macro is never used, so it could just be removed, right?
> 
> >  #define GetOrderBit(pbuf)			\
> >  	(((*(unsigned short *)(pbuf)) & le16_to_cpu(_ORDER_)) != 0)
> 
> Same with that one.  Care to do that type of fixup instead please?
> 
> thanks,
> 
> greg k-h
I think that macro is needed.