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SubjectRe: Build regressions/improvements in v3.0-rc7 (sound/isa/)
Hi Randy,

On Wed, 27 Jul 2011 12:13:20 -0700 Randy Dunlap <rdunlap@xenotime.net> wrote:
>
> On Mon, 25 Jul 2011 09:10:03 -0700 Randy Dunlap wrote:
>
> > On Mon, 25 Jul 2011 09:37:53 +0200 Takashi Iwai wrote:
> >
> > > At Sun, 24 Jul 2011 12:26:24 -0700,
> > > Randy Dunlap wrote:
> > > >
> > > > On Wed, 13 Jul 2011 21:33:30 +0200 Geert Uytterhoeven wrote:
> > > >
> > > > > + src/sound/isa/ad1816a/ad1816a_lib.c: error: implicit declaration of function 'snd_dma_disable': => 544
> > > > > + src/sound/isa/ad1816a/ad1816a_lib.c: error: implicit declaration of function 'snd_dma_pointer': => 302
> > > > > + src/sound/isa/ad1816a/ad1816a_lib.c: error: implicit declaration of function 'snd_dma_program': => 244
> > > > > + src/sound/isa/es1688/es1688_lib.c: error: implicit declaration of function 'snd_dma_pointer': => 509
> > > > > + src/sound/isa/es1688/es1688_lib.c: error: implicit declaration of function 'snd_dma_program': => 417
> > > > > + src/sound/isa/gus/gus_dma.c: error: implicit declaration of function 'snd_dma_disable': => 177
> > > > > + src/sound/isa/gus/gus_dma.c: error: implicit declaration of function 'snd_dma_program': => 79
> > > > > + src/sound/isa/gus/gus_pcm.c: error: implicit declaration of function 'snd_dma_pointer': => 619
> > > > > + src/sound/isa/gus/gus_pcm.c: error: implicit declaration of function 'snd_dma_program': => 591
> > > > > + src/sound/isa/sb/sb16_main.c: error: implicit declaration of function 'snd_dma_pointer': => 456
> > > > > + src/sound/isa/sb/sb16_main.c: error: implicit declaration of function 'snd_dma_program': => 276
> > > > > + src/sound/isa/sb/sb8_main.c: error: implicit declaration of function 'snd_dma_pointer': => 425
> > > > > + src/sound/isa/sb/sb8_main.c: error: implicit declaration of function 'snd_dma_program': => 172
> > > > > + src/sound/isa/sscape.c: error: implicit declaration of function 'snd_dma_program': => 481
> > > > > + src/sound/isa/wss/wss_lib.c: error: implicit declaration of function 'snd_dma_disable': => 1695
> > > > > + src/sound/isa/wss/wss_lib.c: error: implicit declaration of function 'snd_dma_pointer': => 1160
> > > > > + src/sound/isa/wss/wss_lib.c: error: implicit declaration of function 'snd_dma_program': => 1025
> > > >
> > > > All of these source files do #include <sound/core.h>,
> > > > but these missing/implicit functions are conditional:
> > > >
> > > > #ifdef CONFIG_ISA_DMA_API
> > > > #define DMA_MODE_NO_ENABLE 0x0100
> > > >
> > > > void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
> > > > void snd_dma_disable(unsigned long dma);
> > > > unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
> > > > #endif
> > > >
> > > > so should these drivers all depend on ISA_DMA_API ?
> > >
> > > Yes, these are ISA sound cards, so they must have CONFIG_ISA and
> > > CONFIG_ISA_DMA. Although CONFIG_SND_SB8_DSP, CONFIG_SND_SB16_DSP
> > > and CONFIG_SND_WSS_LIB have no direct dependency, but the drivers
> > > selecting these are all in "if SND_ISA" in sound/isa/Kconfig.
> >
> > Hm, yes, they are.
> >
> > > > or should only pieces of each driver depend on ISA_DMA_API ?
> > >
> > > I wonder which configuration makes it possible.
> > > Did you see a similar problem with randconfig?
> >
> > No. This parisc allmodconfig file from linux-next builds has
> > CONFIG_SND_ISA=y but it does not have CONFIG_ISA_DMA_API enabled. Weird.
> >
> > Geert, do you know how this happens?
> >
> > parisc config: http://kisskb.ellerman.id.au/kisskb/buildresult/4323458/config/
> > from this failed build: http://kisskb.ellerman.id.au/kisskb/buildresult/4323458/
>
> How is CONFIG_ISA_DMA_API enabled in parisc allmodconfig?
> I don't see how that happens, and it's causing build errors...

Sorry, but I don't understand the question. The problam is that
CONFIG_ISA_DMA_API is not enabled, right? On parisc, it is just (from
arch/parisc/Kconfig)

config ISA_DMA_API
bool

and nothing selects it. However, I would have expected an allmodconfig
to set it to y. Clearly I don't understan how allmodconfig works any
more :-(

Michal, is my understanding correct? Is this a bug in allmodconfig?
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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