Dear greg k-h:
> -----Original Message-----
> From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> Sent: Wednesday, November 17, 2021 4:53 PM
> To: Tony Huang <tonyhuang.sunplus@xxxxxxxxx>
> Cc: robh+dt@xxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; derek.kiernan@xxxxxxxxxx;
> dragan.cvetic@xxxxxxxxxx; arnd@xxxxxxxx; Wells Lu 呂芳騰
> <wells.lu@xxxxxxxxxxx>; Tony Huang 黃懷厚 <tony.huang@xxxxxxxxxxx>
> Subject: Re: [PATCH 2/2] misc: Add iop driver for Sunplus SP7021
>
> On Wed, Nov 17, 2021 at 02:48:07PM +0800, Tony Huang wrote:
> > Add iop driver for Sunplus SP7021
> >
> > Signed-off-by: Tony Huang <tony.huang@xxxxxxxxxxx>
>
> Along with everything that Arnd said, one more thing:
>
> > +#define IOP_KDBG_INFO
> > +#define IOP_FUNC_DEBUG
> > +#define IOP_KDBG_ERR
> > +#ifdef IOP_KDBG_INFO
> > + #define FUNC_DEBUG() pr_info("K_IOP: %s(%d)\n", __func__, __LINE__)
> > +#else
> > + #define FUNC_DEBUG()
> > +#endif
>
> This should just be deleted entirely, use ftrace if you want to see what your
> kernel driver is doing.
OK, I will delete it.
>
> No single driver should have special debugging macros like this, use the
> kernel-wide system please.
>
> This driver code can get a lot smaller after you make these cleanups.
> Also be sure to use scripts/checkpatch.pl to remove the issues that it points out
> so we don't have to say the same thing.
>
> thanks,
>
> greg k-h
