[patch] pcspkr: fix dependancies

[Stas Sergeev <stsp@aknet.ru>]

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Hello.

linux-2.6.25 has the strange dependancies
for pc-speaker, which prevents snd-pcsp
from working.
Namely, the platform device (created in
arch/x86/kernel/pcspeaker.c) depends on
the platform driver (CONFIG_INPUT_PCSPKR).
I wonder if it is a good practice to make
the platform device to depend on the driver,
I guess it is not.

The attached patch reverses that.
It adds the config option for the pcspkr
platform device and makes the platform
drivers to depend on that.
This allows snd-pcsp to work at least in
some configurations.

Does that patch look reasonable?

---
fix pcspkr dependancies: make the pcspkr platform
drivers to depend on a platform device, and
not the other way around.

Signed-off-by: Stas Sergeev <stsp@aknet.ru>
CC: Takashi Iwai <tiwai@suse.de>
CC: Dmitry Torokhov <dmitry.torokhov@gmail.com>
CC: Vojtech Pavlik <vojtech@suse.cz>

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[-- Type: text/x-patch, Size: 1797 bytes --]

--- a/init/Kconfig	2008-04-26 13:40:20.000000000 +0400
+++ b/init/Kconfig	2008-04-26 18:20:40.000000000 +0400
@@ -624,6 +624,14 @@
 	help
 	  Enable support for generating core dumps. Disabling saves about 4k.
 
+config PCSPKR_PLATFORM
+	bool "Enable PC-Speaker support" if EMBEDDED
+	depends on ALPHA || X86 || MIPS || PPC_PREP || PPC_CHRP || PPC_PSERIES
+	default y
+	help
+          This option allows to disable the internal PC-Speaker
+          support, saving some memory.
+
 config COMPAT_BRK
 	bool "Disable heap randomization"
 	default y
--- a/arch/x86/kernel/Makefile	2008-04-26 13:40:06.000000000 +0400
+++ b/arch/x86/kernel/Makefile	2008-04-26 18:22:49.000000000 +0400
@@ -83,7 +83,7 @@
 obj-$(CONFIG_VMI)		+= vmi_32.o vmiclock_32.o
 obj-$(CONFIG_PARAVIRT)		+= paravirt.o paravirt_patch_$(BITS).o
 
-ifdef CONFIG_INPUT_PCSPKR
+ifdef CONFIG_PCSPKR_PLATFORM
 obj-y				+= pcspeaker.o
 endif
 
--- a/sound/drivers/Kconfig	2008-04-26 13:40:21.000000000 +0400
+++ b/sound/drivers/Kconfig	2008-04-26 18:24:59.000000000 +0400
@@ -5,8 +5,8 @@
 
 
 config SND_PCSP
-	tristate "Internal PC speaker support"
-	depends on X86_PC && HIGH_RES_TIMERS
+	tristate "PC-Speaker support"
+	depends on PCSPKR_PLATFORM && X86_PC && HIGH_RES_TIMERS
 	help
 	  If you don't have a sound card in your computer, you can include a
 	  driver for the PC speaker which allows it to act like a primitive
--- a/drivers/input/misc/Kconfig	2008-04-22 20:50:41.000000000 +0400
+++ b/drivers/input/misc/Kconfig	2008-04-26 18:23:32.000000000 +0400
@@ -14,7 +14,7 @@
 
 config INPUT_PCSPKR
 	tristate "PC Speaker support"
-	depends on ALPHA || X86 || MIPS || PPC_PREP || PPC_CHRP || PPC_PSERIES
+	depends on PCSPKR_PLATFORM
 	help
 	  Say Y here if you want the standard PC Speaker to be used for
 	  bells and whistles.