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SubjectRe: [PATCH v2 2/3] Staging: octeon-usb: Change coding style of CVMX_WAIT_FOR_FIELD32 marco.
I will change it into function, as i checked so far i will need to
change USB_SET_FIELD32 for the same reason.

On Fri, 27 Jul 2018 at 18:15, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Thu, Jul 26, 2018 at 06:41:52PM +0300, Georgios Tsotsos wrote:
> > Fixing coding style for CVMX_WAIT_FOR_FIELD32 was confusing. Also
> > encapsulates into parentheses timeout_usec.
> >
> > Signed-off-by: Georgios Tsotsos <tsotsos@gmail.com>
> > ---
> > drivers/staging/octeon-usb/octeon-hcd.c | 44 +++++++++++++++++----------------
> > 1 file changed, 23 insertions(+), 21 deletions(-)
> >
> > diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
> > index cff5e790b196..c8e0ebf1434f 100644
> > --- a/drivers/staging/octeon-usb/octeon-hcd.c
> > +++ b/drivers/staging/octeon-usb/octeon-hcd.c
> > @@ -378,27 +378,29 @@ struct octeon_hcd {
> > };
> >
> > /* This macro spins on a register waiting for it to reach a condition. */
> > -#define CVMX_WAIT_FOR_FIELD32(address, _union, cond, timeout_usec) \
> > - ({int result; \
> > - do { \
> > - u64 done = cvmx_get_cycle() + (u64)timeout_usec * \
> > - octeon_get_clock_rate() / 1000000; \
> > - union _union c; \
> > - \
> > - while (1) { \
> > - c.u32 = cvmx_usb_read_csr32(usb, address); \
> > - \
> > - if (cond) { \
> > - result = 0; \
> > - break; \
> > - } else if (cvmx_get_cycle() > done) { \
> > - result = -1; \
> > - break; \
> > - } else \
> > - __delay(100); \
> > - } \
> > - } while (0); \
> > - result; })
> > +#define CVMX_WAIT_FOR_FIELD32(address, _union, cond, timeout_usec) \
> > +({ \
> > + int result; \
> > + do { \
> > + u64 done = cvmx_get_cycle() + (u64)(timeout_usec) * \
> > + octeon_get_clock_rate() / 1000000; \
> > + union _union c; \
> > + \
> > + while (1) { \
> > + c.u32 = cvmx_usb_read_csr32(usb, address); \
> > + \
> > + if (cond) { \
> > + result = 0; \
> > + break; \
> > + } else if (cvmx_get_cycle() > done) { \
> > + result = -1; \
> > + break; \
> > + } else \
> > + __delay(100); \
> > + } \
> > + } while (0); \
> > + result; \
> > +})
>
> It's still a mess, why not just make this a function call instead?
>
> thanks,
>
> greg k-h



--
Best regards!
Georgios Tsotsos
Greece-Evia-Chalkida
------------------------------------
Georgios Tsotsos
*Greece - Evia - Chalkida*

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