Hi Geert, On 4/4/22 06:57, Geert Uytterhoeven wrote: > Hi Randy, > > On Mon, Apr 4, 2022 at 12:25 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: >> When CONFIG_DMASOUND_ATARI=m and CONFIG_DMASOUND_Q40=y (or vice versa), >> dmasound_core.o can be built without dmasound_deinit() being defined, >> causing a build error: >> >> ERROR: modpost: "dmasound_deinit" [sound/oss/dmasound/dmasound_atari.ko] undefined! >> >> Modify dmasound_core.c so that dmasound_deinit() is always available. >> >> Suggested-by: Arnd Bergmann <arnd@xxxxxxxx> >> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> > > Thanks for spending more time on this ;-) Well that bot keeps reporting this problem, although I suppose that we could ask for it to be ignored... >> --- linux-next-20220401.orig/sound/oss/dmasound/dmasound_core.c >> +++ linux-next-20220401/sound/oss/dmasound/dmasound_core.c >> @@ -1424,27 +1424,29 @@ int dmasound_init(void) >> return 0; >> } >> >> -#ifdef MODULE >> - >> void dmasound_deinit(void) >> { >> +#ifdef MODULE > > I think this #ifdef must not be added: if the modular subdriver > calls dmasound_deinit(), the resources should be freed, else a subsequent > reload of the subdriver will not work. This does mean all variables > protected by "#ifdef MODULE" must exist unconditionally. OK, I like that simplification. > Alternatively, the test can be replaced by "#ifdef CONFIG_MODULES". > > One big caveat below... > >> if (irq_installed) { >> sound_silence(); >> dmasound.mach.irqcleanup(); >> irq_installed = 0; >> } >> +#endif >> >> write_sq_release_buffers(); >> >> +#ifdef MODULE > > Likewise. > >> if (mixer_unit >= 0) >> unregister_sound_mixer(mixer_unit); >> if (state_unit >= 0) >> unregister_sound_special(state_unit); >> if (sq_unit >= 0) >> unregister_sound_dsp(sq_unit); >> +#endif >> } >> >> -#else /* !MODULE */ >> +#ifndef MODULE >> >> static int dmasound_setup(char *str) >> { > >> --- linux-next-20220401.orig/sound/oss/dmasound/dmasound.h >> +++ linux-next-20220401/sound/oss/dmasound/dmasound.h >> @@ -88,11 +88,7 @@ static inline int ioctl_return(int __use >> */ >> >> extern int dmasound_init(void); >> -#ifdef MODULE >> extern void dmasound_deinit(void); >> -#else >> -#define dmasound_deinit() do { } while (0) >> -#endif >> >> /* description of the set-up applies to either hard or soft settings */ > > ... Below, there is: > > typedef struct { > [...] > #ifdef MODULE > void (*irqcleanup)(void); > #endif > [...] > } MACHINE; > > This means the MACHINE struct is not compatible between builtin > and modular code :-( Hence the "#ifdef MODULE" should be removed, > or replaced by "#ifdef CONFIG_MODULES", too. ditto > P.S. I think the younger myself is responsible for this mess. > Please accept my apologies, after +25 years... :) I'll see how it goes. Thanks. -- ~Randy