Commit graph

15 commits

Author SHA1 Message Date
Amit Choudhary
b1e8a791c7 [ALSA] sound/isa/ad1816a/ad1816a.c: check kmalloc() return value
Check the return value of kmalloc() in function snd_card_ad1816a_pnp(),
in file sound/isa/ad1816a/ad1816a.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>
2006-10-22 10:51:06 +02:00
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
Takashi Iwai
0e7febf158 [ALSA] Add dB scale information to ad1816a driver
Added the dB scale information to ad1816a driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:43:23 +02:00
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
Bjorn Helgaas
5f53f4e210 [PATCH] PNP: adjust pnp_register_card_driver() signature: ad1816a
Remove the assumption that pnp_register_card_driver() returns the
number of devices claimed.

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>
2006-03-27 08:44:53 -08:00
Ken Arromdee
d08a23e250 [ALSA] ad1816a - Fix PCM trigger direction
Modules: AD1816A driver

Fixed the bug of capture with Shark Predator ISA resulting in:
	arecord: pcm_read:1196: read error: Input/output error

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22 10:28:58 +01:00
Takashi Iwai
00a4e3d9f8 [ALSA] Merge ad1816a-lib module to ad1816a
Modules: AD1816A driver

Merge ad1816a-lib module to ad1816.
There is no more reason to split.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:28:57 +01:00
Takashi Iwai
175cdcfb11 [ALSA] ad1816a - Clean up PnP code
Modules: AD1816A driver

Clean up PnP code of ad1816a driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:28:24 +01:00
Takashi Iwai
cbdd0dd15f [ALSA] Remove xxx_t typedefs: ISA AD1816A
Modules: AD1816A driver

Remove xxx_t typedefs from the ISA AD1816A driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:18:18 +01:00
Takashi Iwai
c3e6f7d876 [ALSA] Remove superfluous pcm_free callbacks
Remove superflous pcm_free callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:16:21 +01:00
Takashi Iwai
b1d5776d86 [ALSA] Remove vmalloc wrapper, kfree_nocheck()
- Remove vmalloc wrapper
- Add release_and_free_resource() to remove kfree_nocheck() from each driver
  and simplify the code

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-11-04 13:18:00 +01:00
Takashi Iwai
9e76a76efc [ALSA] Replace with kzalloc() - isa stuff
ES18xx driver,OPL3SA2 driver,AD1816A driver,AD1848 driver,CS4231 driver
ES1688 driver,GUS Library,Opti9xx drivers,EMU8000 driver
SB16/AWE driver,SB drivers
Replace kcalloc(1,..) with kzalloc().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-09-12 10:48:09 +02:00
Takashi Iwai
5b8f7f7329 [ALSA] ad1816a - Add clockfreq module option
Documentation,AD1816A driver
Added clockfreq module option for the card with a different clock frequency
than 33kHz.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-08-30 08:43:43 +02:00
Takashi Iwai
92bb010cd8 [ALSA] Add PnP ID ADS7180
AD1816A driver
Added PnP ID 'ADS7180' (AD1816?).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-05-29 10:10:46 +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