Commit Graph

30 Commits

Author SHA1 Message Date
David Howells e992ef5705 Annotate hardware config module parameters in sound/isa/
When the kernel is running in secure boot mode, we lock down the kernel to
prevent userspace from modifying the running kernel image.  Whilst this
includes prohibiting access to things like /dev/mem, it must also prevent
access by means of configuring driver modules in such a way as to cause a
device to access or modify the kernel image.

To this end, annotate module_param* statements that refer to hardware
configuration and indicate for future reference what type of parameter they
specify.  The parameter parser in the core sees this information and can
skip such parameters with an error message if the kernel is locked down.
The module initialisation then runs as normal, but just sees whatever the
default values for those parameters is.

Note that we do still need to do the module initialisation because some
drivers have viable defaults set in case parameters aren't specified and
some drivers support automatic configuration (e.g. PNP or PCI) in addition
to manually coded parameters.

This patch annotates drivers in sound/isa/.

Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jaroslav Kysela <perex@perex.cz>
cc: Takashi Iwai <tiwai@suse.com>
cc: alsa-devel@alsa-project.org
2017-04-20 12:02:32 +01:00
William Breathitt Gray a99e8c625d ALSA: gusmax: Utilize the module_isa_driver macro
This driver does not do anything special in module init/exit. This patch
eliminates the module init/exit boilerplate code by utilizing the
module_isa_driver macro.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-06-01 07:35:49 +02:00
Lars-Peter Clausen fa60c06569 ALSA: wss: Remove (almost) always NULL parameters
Most callers of snd_wss_pcm(), snd_wss_timer() and snd_cs4236_pcm() pass
NULL as the last parameter, some callers pass a pointer but never use it
after the function has been called and only a few callers pass a pointer and
actually use it. The later is only the case for snd_wss_pcm() for
snd_cs4236_pcm() and it is possible to get the same PCM object by accessing
the pcm field of the snd_wss struct that was passed as the first parameter.

This function removes the last parameters from the functions mentioned above
and updates the callers which used it to use chip->pcm instead. This allows
us to slightly simplify the functions since they don't have to check and set
the last parameter anymore which makes the code slightly shorter and
cleaner.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02 16:30:08 +01:00
Lars-Peter Clausen db5abb3c49 ALSA: gus: Remove always NULL parameters
snd_gf1_pcm_new() and snd_gf1_rawmidi_new() take a pointer to a pointer of a
PCM/MIDI where if this parameter is provided the newly allocated object is
stored. All callers pass NULL though, so remove the parameter. This makes
the code a bit cleaner and shorter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-02 16:27:42 +01:00
Takashi Iwai 4323cc4d5b ALSA: isa: Convert to snd_card_new() with a device pointer
Also remove superfluous snd_card_set_dev() calls.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-12 10:58:21 +01:00
Takashi Iwai 8b5a1f9c46 ALSA: ISA: Remove superfluous *_set_drvdata(NULL) calls
Similarly like the previous commit for PCI drivers, remove
dev_set_drvdata(NULL) and pnp_set_drvdata(NULL) calls in ISA drivers
now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-05-29 12:50:28 +02:00
Bill Pemberton 1bff292e9a ALSA: isa: remove __dev* attributes
CONFIG_HOTPLUG is going away as an option.  As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-12-07 07:32:17 +01:00
Rusty Russell a67ff6a540 ALSA: module_param: make bool parameters really bool
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-12-19 10:34:41 +01:00
Paul Gortmaker 65a772172b sound: fix drivers needing module.h not moduleparam.h
The implicit presence of module.h lured several users into
incorrectly thinking that they only needed/used modparam.h
but once we clean up the module.h presence, these will show
up as build failures, so fix 'em now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:19 -04:00
Yong Zhang 88e24c3a4b sound: irq: Remove IRQF_DISABLED
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-22 11:19:20 +02:00
Joe Perches 9fe856e47e sound: Remove unnecessary casts of private_data
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-09-07 08:05:59 +02:00
Takashi Iwai c95eadd2f1 ALSA: Convert to snd_card_create() in sound/isa/*
Convert from snd_card_new() to the new snd_card_create() function.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-12 15:20:26 +01:00
Krzysztof Helt 7779f75f07 ALSA: wss_lib: rename cs4321_foo to wss_foo
Rename functions and structures from the former
cs4321_lib to names more corresponding with the
new name: wss_lib.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Reviewed-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-06 15:39:49 +02:00
Krzysztof Helt 61ef19d7e7 ALSA: wss_lib: rename cs4231.h into wss.h
Rename file include/sound/cs4231.h
into include/sound/wss.h

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Reviewed-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-06 15:39:47 +02:00
Takashi Iwai 9004acc70e [ALSA] Remove sound/driver.h
This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:48 +01:00
Jaroslav Kysela c1017a4cdb [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2007-10-16 16:51:18 +02:00
Rene Herman 83c51c0ab0 [ALSA] isa_bus device/driver naming
isa_bus: delete snd_ prefix from the (sysfs visible) device/driver names.

Signed-off-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-11 16:55:50 +02:00
Takashi Iwai 5e24c1c1c4 [ALSA] Port the rest of ALSA ISA drivers to isa_driver
Port the rest of ALSA ISA drivers to use isa_driver framework
instead of platform_driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-11 16:55:40 +02:00
Prarit Bhargava 788c604333 [ALSA] Fix __devinit and __devexit issues with sound drivers
Fix __devinit and __devexit issues with sound drivers.
Resolves MODPOST warnings similar to:
WARNING: sound/drivers/snd-dummy.o - Section mismatch: reference to .init.text:snd_dummy_probe from .data.rel.local between 'snd_dummy_driver' (at offset 0x0) and 'snd_dummy_controls'
WARNING: sound/drivers/snd-mtpav.o - Section mismatch: reference to .init.text:snd_mtpav_probe from .data.rel.local between 'snd_mtpav_driver' (at offset 0x0) and 'snd_mtpav_input'
WARNING: sound/drivers/snd-virmidi.o - Section mismatch: reference to .init.text:snd_virmidi_probe from .data.rel.local after 'snd_virmidi_driver' (at offset 0x0)

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-14 08:38:28 +01:00
Jeff Garzik c7bec5aba5 Various drivers' irq handlers: kill dead code, needless casts
- Eliminate casts to/from void*

- Eliminate checks for conditions that never occur.  These typically
  fall into two classes:

	1) Checking for 'dev_id == NULL', then it is never called with
	NULL as an argument.

	2) Checking for invalid irq number, when the only caller (the
	system) guarantees the irq handler is called with the proper
	'irq' number argument.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-06 15:00:58 -04:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Thomas Gleixner 65ca68b300 [PATCH] irq-flags: sound: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jaroslav Kysela <perex@suse.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:54 -07:00
Rene Herman dcccdd938e [ALSA] unregister platform device again if probe was unsuccessful
Unregister the platform device again if the probe was unsuccessful.

This restores the behaviour of not loading the driver on probe() failure.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-04-12 11:55:32 +02:00
Rene Herman d0ac642d76 [ALSA] continue on IS_ERR from platform device registration
Continue with the next one on error from device registration.

This would seem the correct thing to do, even if it's not the probe()
error that we're getting.

Signed-off-by: Rene Herman <rene.herman@keyaccess.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-04-12 11:55:30 +02:00
Takashi Iwai 8278ca8feb [ALSA] Fix check of enable module option
Fix the check of enable module option in probe of platform_device drivers.
It shouldn't break the loop but just ignore if enable[i] is false.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22 10:30:43 +01:00
Clemens Ladisch f7a9275d94 [ALSA] unregister platform devices
Call platform_device_unregister() for all platform devices that we've
registered.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:30:39 +01:00
Takashi Iwai 654aa66177 [ALSA] gus - Use platform_device
Rewrite the probe/remove with platform_device.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:28:36 +01:00
Takashi Iwai 5e2da20648 [ALSA] Remove xxx_t typedefs: ISA GUS
Remove xxx_t typedefs from the ISA GUS drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:18:27 +01:00
Takashi Iwai 43bcd973d6 [ALSA] Add snd_card_set_generic_dev() call to ISA drivers
ISA,CMI8330 driver,ES18xx driver,OPL3SA2 driver,Sound Galaxy driver
Sound Scape driver,AD1848 driver,CS4231 driver,CS4236+ driver
ES1688 driver,GUS Classic driver,GUS Extreme driver,GUS MAX driver
AMD InterWave driver,Opti9xx drivers,SB16/AWE driver,SB8 driver
Wavefront drivers
- Added snd_card_set_generic_dev() call.
- Added SND_GENERIC_DRIVER to Kconfig.
- Clean up the error path in probe if necessary.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-09-12 10:42:01 +02:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00