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  1. 01 11月, 2011 1 次提交
  3. 14 9月, 2011 1 次提交
    • C
      ALSA: mpu401: clean up interrupt specification · dba8b469
      由 Clemens Ladisch 提交于 
      The semantics of snd_mpu401_uart_new()'s interrupt parameters are
somewhat counterintuitive:  To prevent the function from allocating its
own interrupt, either the irq number must be invalid, or the irq_flags
parameter must be zero.  At the same time, the irq parameter being
invalid specifies that the mpu401 code has to work without an interrupt
allocated by the caller.  This implies that, if there is an interrupt
and it is allocated by the caller, the irq parameter must be set to
a valid-looking number which then isn't actually used.

With the removal of IRQF_DISABLED, zero becomes a valid irq_flags value,
which forces us to handle the parameters differently.

This patch introduces a new flag MPU401_INFO_IRQ_HOOK for when the
device interrupt is handled by the caller, and makes the allocation of
the interrupt to depend only on the irq parameter.  As suggested by
Takashi, the irq_flags parameter was dropped because, when used, it had
the constant value IRQF_DISABLED.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      dba8b469
  5. 24 6月, 2011 1 次提交
  7. 10 6月, 2011 2 次提交
    • T
      ALSA: use KBUILD_MODNAME for request_irq argument in sound/pci/* · 934c2b6d
      由 Takashi Iwai 提交于 
      The name argument of request_irq() appears in /proc/interrupts, and
it's quite ugly when the name entry contains a space or special letters.
In general, it's simpler and more readable when the module name appears
there, so let's replace all entries with KBUILD_MODNAME.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      934c2b6d
    • T
      ALSA: Use KBUILD_MODNAME for pci_driver.name entries · 3733e424
      由 Takashi Iwai 提交于 
      The convention for pci_driver.name entry in kernel drivers seem to be
the module name or equivalent ones.  But, so far, almost all PCI sound
drivers use more verbose name like "ABC Xyz (12)", and these are fairly
confusing when appearing as a file name.

This patch converts the all pci_driver.name entries in sound/pci/* to
use KBUILD_MODNAME for more unified appearance.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      3733e424
  9. 31 3月, 2011 1 次提交
  11. 09 2月, 2010 1 次提交
  13. 05 2月, 2010 1 次提交
  15. 08 10月, 2009 1 次提交
  17. 21 9月, 2009 1 次提交
  19. 25 6月, 2009 1 次提交
  21. 07 4月, 2009 1 次提交
  23. 05 2月, 2009 1 次提交
  25. 12 1月, 2009 1 次提交
  27. 30 10月, 2008 1 次提交
  29. 09 9月, 2008 1 次提交
  31. 13 8月, 2008 1 次提交
  33. 24 4月, 2008 2 次提交
    • J
      [ALSA] Fix synchronize_irq() bugs, redundancies · f000fd80
      由 Jeff Garzik 提交于 
      free_irq() calls synchronize_irq() for you, so there is no need for
drivers to manually do the same thing (again).  Thus, calls where
sync-irq immediately precedes free-irq can be simplified.

However, during this audit several bugs were noticed, where free-irq is
preceded by a "irq >= 0" check... but the sync-irq call is not covered
by the same check.

So, where sync-irq could not be eliminated completely, the missing check
was added.
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      f000fd80
    • H
      [ALSA] sound: ice1712.c fix shadowed variable warnings · c3daa92d
      由 Harvey Harrison 提交于 
      In all four case, adding a private value to the iooff index,
call it priv_idx.
sound/pci/ice1712/ice1712.c:1300:6: warning: symbol 'index' shadows an earlier one
sound/pci/ice1712/ice1712.c:85:12: originally declared here
sound/pci/ice1712/ice1712.c:1312:6: warning: symbol 'index' shadows an earlier one
sound/pci/ice1712/ice1712.c:85:12: originally declared here
sound/pci/ice1712/ice1712.c:1338:6: warning: symbol 'index' shadows an earlier one
sound/pci/ice1712/ice1712.c:85:12: originally declared here
sound/pci/ice1712/ice1712.c:1350:6: warning: symbol 'index' shadows an earlier one
sound/pci/ice1712/ice1712.c:85:12: originally declared here

[tiwai - fixed coding issues as well]
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      c3daa92d
  35. 01 2月, 2008 2 次提交
  37. 16 10月, 2007 3 次提交
  39. 11 5月, 2007 2 次提交
  41. 09 2月, 2007 2 次提交
  43. 20 12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 2 次提交
  49. 13 7月, 2006 1 次提交
  51. 03 7月, 2006 1 次提交
  53. 23 6月, 2006 5 次提交
  55. 28 4月, 2006 1 次提交