2019-06-08 07:30:32

by Hao Xu

[permalink] [raw]
Subject: [PATCH 1/2] staging: kpc2000: kpc2000_i2c: void* -> void *

modify void* to void * for #define inb_p(a) readq((void*)a)
and #define outb_p(d,a) writeq(d,(void*)a)

Signed-off-by: Hao Xu <[email protected]>
---
drivers/staging/kpc2000/kpc2000_i2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/kpc2000/kpc2000_i2c.c b/drivers/staging/kpc2000/kpc2000_i2c.c
index a434dd0..de3a0c8 100644
--- a/drivers/staging/kpc2000/kpc2000_i2c.c
+++ b/drivers/staging/kpc2000/kpc2000_i2c.c
@@ -124,9 +124,9 @@ struct i2c_device {

// FIXME!
#undef inb_p
-#define inb_p(a) readq((void*)a)
+#define inb_p(a) readq((void *)a)
#undef outb_p
-#define outb_p(d,a) writeq(d,(void*)a)
+#define outb_p(d,a) writeq(d,(void *)a)

/* Make sure the SMBus host is ready to start transmitting.
* Return 0 if it is, -EBUSY if it is not.
--
1.8.3.1


2019-06-08 13:48:25

by Geordan Neukum

[permalink] [raw]
Subject: Re: [PATCH 1/2] staging: kpc2000: kpc2000_i2c: void* -> void *

On Sat, Jun 08, 2019 at 03:27:46PM +0800, Hao Xu wrote:
> modify void* to void * for #define inb_p(a) readq((void*)a)
> and #define outb_p(d,a) writeq(d,(void*)a)
>
> Signed-off-by: Hao Xu <[email protected]>
> ---
> drivers/staging/kpc2000/kpc2000_i2c.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/kpc2000/kpc2000_i2c.c b/drivers/staging/kpc2000/kpc2000_i2c.c
> index a434dd0..de3a0c8 100644
> --- a/drivers/staging/kpc2000/kpc2000_i2c.c
> +++ b/drivers/staging/kpc2000/kpc2000_i2c.c
> @@ -124,9 +124,9 @@ struct i2c_device {
>
> // FIXME!
> #undef inb_p
> -#define inb_p(a) readq((void*)a)
> +#define inb_p(a) readq((void *)a)
> #undef outb_p
> -#define outb_p(d,a) writeq(d,(void*)a)
> +#define outb_p(d,a) writeq(d,(void *)a)

Alternatively to fixing up the style here, did you consider just
removing these two macros altogether and calling [read|write]q
directly throughout the kpc_i2c driver (per the '//FIXME' comment)?

Unless, I'm misunderstanding something, these macros are shadowing the
functions [in|out]b_p, which already exist in io.h. [in|out]b_p are for
8-bit i/o transactions and [read|write]q are for 64-bit transactions, so
shadowing the original [in|out]b_p with something that actually does
64-bit transactions is probably potentially misleading here.

2019-06-09 11:18:38

by Greg Kroah-Hartman

[permalink] [raw]
Subject: Re: [PATCH 1/2] staging: kpc2000: kpc2000_i2c: void* -> void *

On Sat, Jun 08, 2019 at 01:45:05PM +0000, Geordan Neukum wrote:
> On Sat, Jun 08, 2019 at 03:27:46PM +0800, Hao Xu wrote:
> > modify void* to void * for #define inb_p(a) readq((void*)a)
> > and #define outb_p(d,a) writeq(d,(void*)a)
> >
> > Signed-off-by: Hao Xu <[email protected]>
> > ---
> > drivers/staging/kpc2000/kpc2000_i2c.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/staging/kpc2000/kpc2000_i2c.c b/drivers/staging/kpc2000/kpc2000_i2c.c
> > index a434dd0..de3a0c8 100644
> > --- a/drivers/staging/kpc2000/kpc2000_i2c.c
> > +++ b/drivers/staging/kpc2000/kpc2000_i2c.c
> > @@ -124,9 +124,9 @@ struct i2c_device {
> >
> > // FIXME!
> > #undef inb_p
> > -#define inb_p(a) readq((void*)a)
> > +#define inb_p(a) readq((void *)a)
> > #undef outb_p
> > -#define outb_p(d,a) writeq(d,(void*)a)
> > +#define outb_p(d,a) writeq(d,(void *)a)
>
> Alternatively to fixing up the style here, did you consider just
> removing these two macros altogether and calling [read|write]q
> directly throughout the kpc_i2c driver (per the '//FIXME' comment)?
>
> Unless, I'm misunderstanding something, these macros are shadowing the
> functions [in|out]b_p, which already exist in io.h. [in|out]b_p are for
> 8-bit i/o transactions and [read|write]q are for 64-bit transactions, so
> shadowing the original [in|out]b_p with something that actually does
> 64-bit transactions is probably potentially misleading here.

Yes, these should be fixed up "properly". But I'll take the coding
style cleanups for now.

thanks,

greg k-h