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  1. 10 1月, 2015 1 次提交
    • T
      ALSA: trident: Simplify PM callbacks · 6f9eb021
      由 Takashi Iwai 提交于 
      This is a similar cleanup like the commit [3db084fd: ALSA: fm801:
PCI core handles power state for us].

Since pci_set_power_state(), pci_save_state() and pci_restore_state()
are already done in the PCI core side, so we don't need to it doubly.

Also, pci_enable_device(), pci_disable_device() and pci_set_master()
calls in PM callbacks are superfluous nowadays, too, so get rid of
them as well.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      6f9eb021
  3. 03 12月, 2014 1 次提交
  5. 01 7月, 2014 1 次提交
  7. 26 2月, 2014 1 次提交
  9. 12 2月, 2014 1 次提交
  11. 07 12月, 2012 1 次提交
  13. 15 8月, 2012 1 次提交
  15. 03 7月, 2012 2 次提交
  17. 01 11月, 2011 1 次提交
  19. 10 6月, 2011 1 次提交
  21. 17 6月, 2010 1 次提交
  23. 07 4月, 2009 1 次提交
  25. 05 2月, 2009 1 次提交
  27. 13 8月, 2008 1 次提交
  29. 26 6月, 2008 1 次提交
  31. 24 4月, 2008 1 次提交
  33. 01 2月, 2008 3 次提交
  35. 16 10月, 2007 2 次提交
  37. 11 5月, 2007 1 次提交
  39. 09 2月, 2007 1 次提交
  41. 20 12月, 2006 2 次提交
  43. 22 10月, 2006 1 次提交
  45. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 David Howells 提交于 
      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: NDavid Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  47. 23 9月, 2006 1 次提交
  49. 03 7月, 2006 1 次提交
  51. 23 6月, 2006 2 次提交
  53. 29 3月, 2006 1 次提交
  55. 03 1月, 2006 3 次提交
  57. 04 11月, 2005 3 次提交
  59. 12 9月, 2005 1 次提交
    • T
      [ALSA] Replace with kzalloc() - pci stuff · e560d8d8
      由 Takashi Iwai 提交于 
      AD1889 driver,ATIIXP driver,ATIIXP-modem driver,AZT3328 driver
BT87x driver,CMIPCI driver,CS4281 driver,ENS1370/1+ driver
ES1938 driver,ES1968 driver,FM801 driver,Intel8x0 driver
Intel8x0-modem driver,Maestro3 driver,SonicVibes driver,VIA82xx driver
VIA82xx-modem driver,AC97 Codec,AK4531 codec,au88x0 driver
CA0106 driver,CS46xx driver,EMU10K1/EMU10K2 driver,HDA Codec driver
HDA generic driver,HDA Intel driver,ICE1712 driver,ICE1724 driver
KORG1212 driver,MIXART driver,NM256 driver,Trident driver,YMFPCI driver
Replace kcalloc(1,..) with kzalloc().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      e560d8d8