[PATCH] fpga: define dummy fpga_load function for debug build

[Chanho Park]

Hi,

> -----Original Message-----
> From: Michal Simek <michal.simek at amd.com>
> Sent: Friday, August 25, 2023 4:23 PM
> To: Chanho Park <chanho61.park at samsung.com>; u-boot at lists.denx.de
> Subject: Re: [PATCH] fpga: define dummy fpga_load function for debug build
> 
> Hi,
> 
> On 8/16/23 08:54, Chanho Park wrote:
> > This fixes below build error when CC_OPTIMIZE_FOR_DEBUG is enabled and
> > CONFIG_SPL_FPGA is not enabled.
> >
> > ../common/spl/spl_fit.c:591: undefined reference to `fpga_load'
> > collect2: error: ld returned 1 exit status
> >
> > Signed-off-by: Chanho Park <chanho61.park at samsung.com>
> > ---
> >   include/fpga.h | 8 ++++++++
> >   1 file changed, 8 insertions(+)
> >
> > diff --git a/include/fpga.h b/include/fpga.h index
> > ed688cc0fa3b..44f2755a3f10 100644
> > --- a/include/fpga.h
> > +++ b/include/fpga.h
> > @@ -60,8 +60,16 @@ int fpga_add(fpga_type devtype, void *desc);
> >   int fpga_count(void);
> >   const fpga_desc *const fpga_get_desc(int devnum);
> >   int fpga_is_partial_data(int devnum, size_t img_len);
> > +#if CONFIG_IS_ENABLED(FPGA)
> >   int fpga_load(int devnum, const void *buf, size_t bsize,
> >   	      bitstream_type bstype, int flags);
> > +#else
> > +static inline int fpga_load(int devnum, const void *buf, size_t bsize,
> > +	      bitstream_type bstype, int flags) {
> > +	return FPGA_FAIL;
> > +}
> > +#endif
> >   int fpga_fsload(int devnum, const void *buf, size_t size,
> >   		fpga_fs_info *fpga_fsinfo);
> >   int fpga_loads(int devnum, const void *buf, size_t size,
> 
> There is another patch targeting the same code.
> Please take a look at
> https://lore.kernel.org/r/20230808102227.34233-1-
> eugen.hristev at collabora.com

I wasn't aware that there was an attempt to fix the issue. If I knew it, I would reply the patch...

> 
> and work together to come up with the patch which covers both cases.

Yes. I also tried to make the patch with CONFIG_CC_OPTIMIZE_FOR_DEBUG guard but I couldn't find any codes that uses the guard.
And I was also worried about the CC_OPTIMIZE_FOR_DEBUG's behavior. It could be related with the optimization level of the compiler.
That's why I put the guard with #if CONFIG_IS_ENABLED(FPGA).

Best Regards,
Chanho Park