Re: linux-next: build warning after merge of the nand tree

Serge Semin
2020-11-20T12:59:08Z

Hello Miquel, Boris

On Fri, Nov 20, 2020 at 01:01:23PM +0100, Boris Brezillon wrote:
> On Fri, 20 Nov 2020 12:23:59 +0100
> Miquel Raynal <miquel.raynal@bootlin.com> wrote:
>
> > Hi Serge,
> >
> > Stephen Rothwell <sfr@canb.auug.org.au> wrote on Fri, 20 Nov 2020
> > 11:39:29 +1100:
> >
> > > Hi all,
> > >
> > > After merging the nand tree, today's linux-next build (x86_64
> > > allmodconfig) produced this warning:
> > >
> > > drivers/mtd/maps/physmap-bt1-rom.c: In function 'bt1_rom_map_read':
> > > drivers/mtd/maps/physmap-bt1-rom.c:39:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> > > 39 | shift = (unsigned int)src & 0x3;
> > > | ^
> > > drivers/mtd/maps/physmap-bt1-rom.c: In function 'bt1_rom_map_copy_from':
> > > drivers/mtd/maps/physmap-bt1-rom.c:78:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> > > 78 | shift = (unsigned int)src & 0x3;
> > > | ^
> > >
> > > Introduced by commit
> > >
> > > 69a75a1a47d8 ("mtd: physmap: physmap-bt1-rom: Fix __iomem addrspace removal warning")
> > >
> >

> > Too bad :/ I'll drop this patch for now, let's look for another
> > solution...

that'd be great. I've forgotten that my arch is 32-bit and the
compiler just did print a warning for it.(

>
> uintptr_t cast?

Yep, most likely that will be the best option in this case to make
sparse happy and not to cause the warning above.

I'll send v2 patch shortly.

-Sergey