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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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This patch makes the needlessly global snd_emu10k1_resume() 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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Fixed compile errors with older gcc for initialization of a union.
sound/pci/ca0106/ca0106_mixer.c: At top level:
sound/pci/ca0106/ca0106_mixer.c:499: unknown field 'p' specified in initializer
sound/pci/ca0106/ca0106_mixer.c:499: warning: missing braces around initializer
sound/pci/ca0106/ca0106_mixer.c:499: warning: (near initialization for 'snd_ca0106_volume_ctls[0].tlv')
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Report errors to modprobe as side effect.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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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gain.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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card.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Fixes ALSA bug#1365.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Fixes ALSA bug#2190 System hangs on unplugging Audigy 2 ZS
Notebook CardBus card.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Fixed 'section mismatch' errors in ALSA PCI drivers:
- removed invalid __devinitdata from pci id tables
- fix/remove __devinit of functions called in suspend/resume
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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This patch fixes the remaining instances in our tree where a non-
existent mpu401 interface can cause a hard freeze when i/o is issued.
This commit closes Malone #34831.
Bug: https://launchpad.net/distros/ubuntu/+source/linux-source-2.6.15/+bug/34831
patch location:
http://www.kernel.org/git/?p=linux/kernel/git/bcollins/ubuntu-dapper.git;a=commitdiff;h=b422309cdd980cfefe99379796c04e961d3c1544
From: Randy Dunlap <randy.dunlap@oracle.com>
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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Removed zero-initializations of static variables.
A tiny optimization.
Signed-off-by: Takashi Iwai <tiwai@suse.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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Move EXPORT_SYMBOL() to adjacent to each exported function/variable.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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There's no reason for #include'ing linux/dma-mapping.h more than once.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Replace all occurences of 0xff.. in calls to function pci_set_dma_mask()
and pci_set_consistant_dma_mask() with the corresponding DMA_xBIT_MASK from
linux/dma-mapping.h.
Signed-off-by: Matthias Gehre <M.Gehre@gmx.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch introduces the DMA_28BIT_MASK constant in dma-mapping.h
ALSA drivers using this mask are changed to use the new constant.
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Jaroslav Kysela <perex@suse.cz>
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Modules: EMU10K1/EMU10K2 driver
Thou shalt not dereference freed memory.
Coverity bug #958
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Added the missing card entry for Audigy4 SB0400 model.
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: EMU10K1/EMU10K2 driver
Fix the confliction of 'Front' controls on models with STAC9758 codec.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Fix silence problems on some boards after suspend/resume (bug#1674).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- Move capable() from sched.h to capability.h;
- Use <linux/capability.h> where capable() is used
(in include/, block/, ipc/, kernel/, a few drivers/,
mm/, security/, & sound/;
many more drivers/ to go)
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Clean up and optimize the codes in p16v.c
- Add proper __devinit* tags
- Reduce unnecessary functions using a closure
- Fix whitespaces
- Rename 'Unknown' to 'Side' controls
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Description:
This enables the 7.1 speaker output of the Audigy 2 ZS Notebook.
Further towards fixing ALSA bug#927
TODO:
SPDIF/IEC958 output. (untested, might already work)
Sound capture. (untested, might already work.)
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Description:
Part way to fix ALSA bug#927
Add support for the SPI interface on the CA0108 chip.
This is used to control the registers on the DAC.
Headphone output tested.
Other outputs and Capture not tested yet.
Note: The red LED does not come on, but sound is still OK.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
Added the chip-detail entry for SB Live 5.1 Digital OEM [SB0220, (c) 2003].
Signed-off-by: Gergely Tamas <dice@mfa.kfki.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
sound/pci/emu10k1/emufx.c: In function 'snd_emu10k1_efx_alloc_pm_buffer':
sound/pci/emu10k1/emufx.c:2402: error: implicit declaration of function 'vmalloc'
sound/pci/emu10k1/emufx.c:2402: warning: assignment makes pointer from integer without a cast
sound/pci/emu10k1/emufx.c: In function 'snd_emu10k1_efx_free_pm_buffer':
sound/pci/emu10k1/emufx.c:2413: error: implicit declaration of function 'vfree'
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Distorted sound now comes from the Audio Out socket. Still more work to do.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Optimize the code when compiled without CONFIG_PROC_FS for some pci drivers.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Add PM support to emu10k1 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Remove xxx_t typedefs from the PCI emu10k1x driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Remove xxx_t typedefs from the PCI emu10k1 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Minor clean up of emu10k1 memory block allocation.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Modules: EMU10K1/EMU10K2 driver
Minor clean up of the emu10k1x interrupt handler code.
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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Modules: EMU10K1/EMU10K2 driver
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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Modules: EMU10K1/EMU10K2 driver
on Audigy 2 ZS Notebook.
Set the master volume to about 6 or 8% in alsamixer. This will
attenuate the output enough for better sound quality.
Note: Only stereo enabled at present.
The distortion is caused by the output path after the DSP
adding 12dB gain to the output while still in digital mode,
resulting in wrap around distortion.
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>
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