Re: [PATCH] Staging: octeon-usb: fixed a macro coding style issue

[Greg KH <gregkh@linuxfoundation.org>]

On Fri, Apr 25, 2014 at 10:48:22AM -0300, Nicolas Del Piano wrote:
> Fixed a coding style error, macros with complex values should be enclosed in parentheses.
> 
> Signed-off-by: Nicolas Del Piano <ndel314@gmail.com>
> ---
>  drivers/staging/octeon-usb/octeon-hcd.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
> index 8b8ce72..ef3a8ce 100644
> --- a/drivers/staging/octeon-usb/octeon-hcd.c
> +++ b/drivers/staging/octeon-usb/octeon-hcd.c
> @@ -246,7 +246,7 @@ enum cvmx_usb_pipe_flags {
>  };
> 
>  /* Normal prefetch that use the pref instruction. */
> -#define CVMX_PREFETCH(address, offset) asm volatile ("pref %[type], %[off](%[rbase])" : : [rbase] "d" (address), [off] "I" (offset), [type] "n" (0))
> +#define CVMX_PREFETCH(address, offset) (asm volatile ("pref %[type], %[off](%[rbase])" : : [rbase] "d" (address), [off] "I" (offset), [type] "n" (0)))
> 
>  /* Maximum number of times to retry failed transactions */
>  #define MAX_RETRIES		3

Will that actually compile?

Why the heck are we using asm in a define in the first place?  Shouldn't
this be an inline function or something?

thanks,

greg k-h