No longer terribly relevant these days but still broken and just an eyesore mess of neglience just as I've already raised it a few days ago. Time to sort this. drivers/input/misc/pcspkr.c: #if defined(CONFIG_MIPS) || defined(CONFIG_X86) /* Use the global PIT lock ! */ #include <asm/i8253.h> #else #include <asm/8253pit.h> static DEFINE_RAW_SPINLOCK(i8253_lock); #endif sound/drivers/pcsp/pcsp.h: #if defined(CONFIG_MIPS) || defined(CONFIG_X86) /* Use the global PIT lock ! */ #include <asm/i8253.h> #else #include <asm/8253pit.h> static DEFINE_RAW_SPINLOCK(i8253_lock); $ git grep -F pcsp.h sound/drivers/pcsp sound/drivers/pcsp/pcsp.c:#include "pcsp.h" sound/drivers/pcsp/pcsp_input.c:#include "pcsp.h" sound/drivers/pcsp/pcsp_lib.c:#include "pcsp.h" sound/drivers/pcsp/pcsp_mixer.c:#include "pcsp.h" $ git grep -w i8253_lock sound/drivers/pcsp/ sound/drivers/pcsp/pcsp.h:static DEFINE_RAW_SPINLOCK(i8253_lock); sound/drivers/pcsp/pcsp_input.c: raw_spin_lock_irqsave(&i8253_lock, flags sound/drivers/pcsp/pcsp_input.c: raw_spin_unlock_irqrestore(&i8253_lock, sound/drivers/pcsp/pcsp_lib.c: raw_spin_lock_irqsave(&i8253_lock, flags sound/drivers/pcsp/pcsp_lib.c: raw_spin_unlock_irqrestore(&i8253_lock, sound/drivers/pcsp/pcsp_lib.c: raw_spin_lock(&i8253_lock); sound/drivers/pcsp/pcsp_lib.c: raw_spin_unlock(&i8253_lock); sound/drivers/pcsp/pcsp_lib.c: raw_spin_lock(&i8253_lock); sound/drivers/pcsp/pcsp_lib.c: raw_spin_unlock(&i8253_lock); Locks are great, everybody should have their own lock! $ find . -name 8253pit.h ./arch/powerpc/include/asm/8253pit.h ./arch/alpha/include/asm/8253pit.h $ cat arch/*/include/asm/8253pit.h /* * 8253/8254 Programmable Interval Timer */ /* * 8253/8254 Programmable Interval Timer */ $ Eh... $ git grep -w PCSPKR_PLATFORM arch/mips/Kconfig: select PCSPKR_PLATFORM arch/mips/Kconfig: select PCSPKR_PLATFORM arch/mips/Kconfig: select PCSPKR_PLATFORM arch/powerpc/platforms/amigaone/Kconfig: select PCSPKR_PLATFORM drivers/input/misc/Kconfig: depends on PCSPKR_PLATFORM init/Kconfig:config PCSPKR_PLATFORM sound/drivers/Kconfig: depends on PCSPKR_PLATFORM && X86 && HIGH_RES_TIMERS So the status is: Alpha: There is no PCSPKR_PLATFORM so while a platform device is being installed no drivers will be built. I don't know which Alpha platforms or even if all of Alpha should be doing a PCSPKR_PLATFORM so I haven't even tried to sort this. ARM: No PC speaker supported, yeah :) PowerPC: Should compile but the locking is wrong but only the AmigaOne platforms should be affected. MIPS: Ok. x86: Ok. All others: No PC speaker supported Also only the plain old IBM PC XT was using a i8253; every later system had i8254. So maybe this is the time for renaming the support code? Ralf