Use of data types

Russell King - ARM Linux linux at arm.linux.org.uk
Mon Jan 18 08:52:40 EST 2010


On Mon, Jan 18, 2010 at 02:42:15PM +0100, Matthias Kaehlcke wrote:
> El Mon, Jan 18, 2010 at 02:41:20PM +0100 Uwe Kleine-König ha dit:
> 
> > On Mon, Jan 18, 2010 at 09:43:12PM +0900, Khushhua Mogambo wrote:
> > > Hi
> > >   I starting to port Linux kernel to my companies new ARM based
> > > SoC and development board.
> > > 
> > > Some of the regs is 16bits wide and some is 32bits width. I ask if
> > > my using u16 and u32 in place of 'unsigned short' and 'unsigned int'
> > > in the whole porting would be acceptable or not?
> > > 
> > > In different wording, using only u16 and u32 always is considered good
> > > quality or bad?
> > I prefer using u32 over int.  Still more if your register space isn't uniform.
> 
> ditto
> 
> how about using the C99 types uint32_t, ... in the kernel? 

You might want to read Documentation/CodingStyle chapter 5, which covers
some of these issues.



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