Age | Commit message (Collapse) | Author |
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If spin_lock_irqsave is called twice in a row with the same second
argument, the interrupt state at the point of the second call overwrites
the value saved by the first call. Indeed, the second call does not need
to save the interrupt state, so it is changed to a simple spin_lock.
The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
expression lock1,lock2;
expression flags;
@@
*spin_lock_irqsave(lock1,flags)
... when != flags
*spin_lock_irqsave(lock2,flags)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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3 ISA sound drivers lack their __devexit_p() markers, which would
cause build failures when the kernel is built without hotplug support.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Convert some of them to snd_printdd() and
update arguments to make them compilable.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Some drivers in sound/isa/* don't handle the error code properly
from snd_card_create(). This patch fixes these places.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Convert from snd_card_new() to the new snd_card_create() function.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Removed the direct accesses of dev->bus_id in sound/isa/* by replacement
with dev_err() or dev_warn() functions.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Kill snd_assert() in sound/isa/*, either removed or replaced with
if () with snd_BUG_ON().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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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>
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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>
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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>
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This removes the pnp_resource_change use from the ALSA ISAPnP drivers. In
2.4 these were useful in providing an easy path to setting the resources,
but in 2.6 they retain function as a layering violation only.
This makes for a nice cleanup (-550 lines) of ALSA but moreover, ALSA is the
only remaining user of pnp_init_resource_table(), pnp_resource_change() and
pnp_manual_config_dev() (and, in fact, of 'struct pnp_resource_table') in
the tree outide of drivers/pnp itself meaning it makes for more cleanup
potential inside the PnP layer.
Thomas Renninger acked their removal from that side, you did from the ALSA
side (CC list just copied from that thread).
Against current alsa-kernel HG. Many more potential cleanups in there, but
this _only_ removes the pnp_resource_change code. Compile tested against
current alsa-kernel HG and compile- and use-tested against 2.6.23.x (few
offsets).
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Remove sequencer instrument layer from the tree.
This mechanism hasn't been used much with the actual devices. The only
reasonable user was OPL3 loader, and now it was rewritten to use hwdep
instead. So, let's remove the rest of rotten codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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when simulating a storm of fake GUS interrupts (without actually owning
this venerable piece of ISA hardware) the driver falls over (crashes) in
two ways:
1) spinlocks being initialized too late:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
[<401058ca>] show_trace_log_lvl+0x1a/0x30
[<401064b2>] show_trace+0x12/0x20
[<401064d6>] dump_stack+0x16/0x20
[<4014a72b>] __lock_acquire+0xcfb/0x1030
[<4014aac0>] lock_acquire+0x60/0x80
[<40721a68>] _spin_lock_irqsave+0x38/0x50
[<4058fc12>] snd_gf1_i_look8+0x22/0x60
[<405906fe>] snd_gus_interrupt+0x13e/0x270
[<401548e8>] handle_IRQ_event+0x28/0x60
[<40155cc1>] handle_fasteoi_irq+0x71/0xe0
[<40107238>] do_IRQ+0x48/0xa0
[<401051fe>] common_interrupt+0x2e/0x40
[<40156822>] register_handler_proc+0x92/0xf0
[<401550c2>] setup_irq+0xe2/0x190
[<40155224>] request_irq+0xb4/0xd0
[<4058f524>] snd_gus_create+0x124/0x3c0
[<40aa4087>] snd_gusclassic_probe+0x2a7/0x4b0
[<403f5eff>] isa_bus_probe+0x1f/0x30
[<403f1944>] driver_probe_device+0x84/0x190
[<403f1a58>] __device_attach+0x8/0x10
[<403f0e63>] bus_for_each_drv+0x53/0x80
[<403f1b1b>] device_attach+0x8b/0x90
[<403f0dd8>] bus_attach_device+0x48/0x80
[<403efdbd>] device_add+0x45d/0x5a0
[<403eff12>] device_register+0x12/0x20
[<403f60c3>] isa_register_driver+0xb3/0x140
[<40aa3dd2>] alsa_card_gusclassic_init+0x12/0x20
[<40a665c3>] kernel_init+0x133/0x310
[<401054a7>] kernel_thread_helper+0x7/0x10
=======================
2) callback functions not being filled in yet:
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
00000000
*pde = 00000000
Oops: 0000 [#1]
SMP DEBUG_PAGEALLOC
CPU: 0
EIP: 0060:[<00000000>] Not tainted VLI
EFLAGS: 00010002 (2.6.23 #37)
EIP is at 0x0
eax: 7fe94000 ebx: 7fe94000 ecx: 00000000 edx: 00000226
esi: 00000000 edi: 00000005 ebp: 7ff87c28 esp: 7ff87bf4
ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068
Process swapper (pid: 1, ti=7ff86000 task=7ff84000 task.ti=7ff86000)
Stack: 40590683 408424a9 408db87c 00000029 40787406 00000064 00000046 ff000000
000000ff 00000001 7faefaf0 00000000 00000005 7ff87c40 401548e8 00000000
40a52000 7faefaf0 00000005 7ff87c58 40155cc1 40a52030 00000005 00000000
Call Trace:
[<401058ca>] show_trace_log_lvl+0x1a/0x30
[<4010598b>] show_stack_log_lvl+0xab/0xd0
[<40105b7c>] show_registers+0x1cc/0x2d0
[<40105d96>] die+0x116/0x240
[<4011d7bb>] do_page_fault+0x18b/0x670
[<40721d22>] error_code+0x72/0x80
[<401548e8>] handle_IRQ_event+0x28/0x60
[<40155cc1>] handle_fasteoi_irq+0x71/0xe0
[<40107238>] do_IRQ+0x48/0xa0
[<401051fe>] common_interrupt+0x2e/0x40
[<401a344e>] proc_create+0x3e/0x120
[<401a3733>] proc_mkdir_mode+0x23/0x50
[<401a376f>] proc_mkdir+0xf/0x20
[<40156864>] register_handler_proc+0xd4/0xf0
[<401550c2>] setup_irq+0xe2/0x190
[<40155224>] request_irq+0xb4/0xd0
[<4058f524>] snd_gus_create+0x124/0x3c0
[<40aa4087>] snd_gusclassic_probe+0x2a7/0x4b0
[<403f5eff>] isa_bus_probe+0x1f/0x30
[<403f1944>] driver_probe_device+0x84/0x190
[<403f1a58>] __device_attach+0x8/0x10
[<403f0e63>] bus_for_each_drv+0x53/0x80
[<403f1b1b>] device_attach+0x8b/0x90
[<403f0dd8>] bus_attach_device+0x48/0x80
[<403efdbd>] device_add+0x45d/0x5a0
[<403eff12>] device_register+0x12/0x20
[<403f60c3>] isa_register_driver+0xb3/0x140
[<40aa3dd2>] alsa_card_gusclassic_init+0x12/0x20
[<40a665c3>] kernel_init+0x133/0x310
[<401054a7>] kernel_thread_helper+0x7/0x10
=======================
Code: Bad EIP value.
EIP: [<00000000>] 0x0 SS:ESP 0068:7ff87bf4
Kernel panic - not syncing: Fatal exception in interrupt
with these things fixed, i get the expected 'no such hardware' result
from the driver initialization:
Calling initcall 0x40aa3dc0: alsa_card_gusclassic_init+0x0/0x20()
ALSA sound/isa/gus/gusclassic.c:136: [0x220] check 1 failed - 0xff
initcall 0x40aa3dc0: alsa_card_gusclassic_init+0x0/0x20() returned 0.
initcall 0x40aa3dc0 ran for 133 msecs:
alsa_card_gusclassic_init+0x0/0x20()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Clean up codes using the new common snd_ctl_boolean_*_info() callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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isa_register_driver() returns an error if no device is found
and it's no fatal error for the drivers with pnp support.
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>
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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>
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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>
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The gusextreme driver neglects to set the gus->codec_flag meaning
snd_gf1_pcm_new() allocates a second 'PCM Playback Volume' control,
which makes the driver fail to load.
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>
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gusextreme: port to isa_bus infrastructure
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>
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gusclassic: port to isa_bus infrastructure
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>
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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>
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Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Use the ALIGN macro instead of manual calculations.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Check the return value of kmalloc() in function snd_interwave_pnp(),
in file sound/isa/gus/interwave.c.
Signed-off-by: Amit Choudhary <amit2030@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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- 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>
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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)
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gus: Use SEEK_{SET,CUR,END} instead of hardcoded values
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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'devices' is not a good name for a global variable.
Thankfully, it can become static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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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>
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This is needed if we wish to change the size of the resource structures.
Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Removed zero-initializations of static variables.
A tiny optimization.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add four new information flags SNDRV_SEQ_PORT_TYPE_HARDWARE, _SOFTWARE,
_SYNTHESIZER, _PORT for sequencer ports. This makes it easier for apps
like Rosegarden to make policy decisions based on the port type.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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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>
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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>
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Remove the assumption that pnp_register_card_driver() returns the
number of devices claimed. And fix some __init/__devinit issues.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Jaroslav Kysela <perex@suse.cz>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Modules: GUS Library
The NULL check of substream is simply superfluous. It is
guaranteed to receive non-NULL substream. Thanks Takashi.
Coverity bug #861
Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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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>
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Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: OPL3SA2 driver,GUS Classic driver
dma2 is a global array. sprintf below suggests there was a typo.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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All users of snd_seq_create_kernel_client() have to set the client name
anyway, so we can just pass the name as parameter. This relieves us
from having to muck around with a struct snd_seq_client_info in these
cases.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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The fields of struct snd_seq_client_callback either aren't used or are
always set to the same value, so we can get rid of it altogether.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Call platform_device_unregister() for all platform devices that we've
registered.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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Rewrite the probe/remove with platform_device.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Remove xxx_t typedefs from the ISA GUS drivers.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Remove superflous pcm_free callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Use schedule_timeout_{,un}interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size. Also use
human-time conversion functions instead of hard-coded division to avoid
rounding issues.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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