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  1. 06 4月, 2016 1 次提交
    • T
      ALSA: intel8x0: Drop superfluous VM checks · 4926c804
      由 Takashi Iwai 提交于 
      intel8x0 driver has the inside_vm check for skipping a buggy hardware
workaround in the PCM pointer callback in the commit [228cf793:
ALSA: intel8x0: Improve performance in virtual environment].  This was
originally applied to all devices on known VMs, but the code was
switched to use the PCI  ID matching for applying to only known
devices (KVM and Parallels), in order to avoid applying wrongly to
VT-d and other such cases, in the commit [7fb4f392: ALSA:
intel8x0: improve virtual environment detection].

Meanwhile, the original VM check was kept even after switching to the
PCI ID matching.  It was partly because we weren't 100% sure whether
we had covered all well, and partly because this would help
identifying the issue once when a user of another VM hit the same
problem or a regression.  Currently the VM check is used only for
showing the kernel message that the VM-optimization isn't applied, and
the VM check itself doesn't change the actual driver behavior at all.

Despite the relatively safe driver behavior, the code caught attention
of developers badly and brought many confusion / misunderstanding.
Since we've got neither regression nor enhancement report for other
VMs for five years long, it's likely safe to drop this superfluous VM
check now.

The module option is still kept, so if a user still needs to adjust,
it can be applied as was.
Acked-by: NKonstantin Ozerkov <kozerkov@parallels.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      4926c804
  3. 14 3月, 2016 1 次提交
  5. 09 3月, 2016 1 次提交
  7. 29 5月, 2015 1 次提交
  9. 16 4月, 2015 1 次提交
  11. 05 4月, 2015 1 次提交
  13. 28 1月, 2015 1 次提交
  15. 09 1月, 2015 1 次提交
    • T
      ALSA: intel8x0: Simplify PM callbacks · 3c5a03d4
      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>
      3c5a03d4
  17. 13 8月, 2014 1 次提交
  19. 12 6月, 2014 1 次提交
  21. 26 2月, 2014 1 次提交
  23. 12 2月, 2014 1 次提交
  25. 06 11月, 2013 1 次提交
  27. 29 5月, 2013 1 次提交
    • T
      ALSA: PCI: Remove superfluous pci_set_drvdata(pci, NULL) at remove · 20a24225
      由 Takashi Iwai 提交于 
      As drvdata is cleared to NULL at probe failure or at removal by the
driver core, we don't have to call pci_set_drvdata(pci, NULL) any
longer in each driver.

The only remaining pci_set_drvdata(NULL) is in azx_firmware_cb() in
hda_intel.c.  Since this function itself releases the card instance,
we need to clear drvdata here as well, so that it won't be released
doubly in the remove callback.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      20a24225
  29. 26 1月, 2013 1 次提交
    • T
      ALSA: Make snd_printd() and snd_printdd() inline · 86b27237
      由 Takashi Iwai 提交于 
      Because currently snd_printd() and snd_printdd() macros are expanded
to empty when CONFIG_SND_DEBUG=n, a compile warning like below
appears sometimes, and we had to covert it by ugly ifdefs:
  sound/pci/hda/patch_sigmatel.c: In function ‘stac92hd71bxx_fixup_hp’:
  sound/pci/hda/patch_sigmatel.c:2434:24: warning: unused variable ‘spec’ [-Wunused-variable]

For "fixing" these issues better, this patch replaces snd_printd() and
snd_printdd() definitions with empty inline functions instead of
macros.  This should have the same effect but shut up warnings like
above.

But since we had already put ifdefs, changing to inline functions
would trigger compile errors.  So, such ifdefs is removed in this
patch.

In addition, snd_pci_quirk name field is defined only when
CONFIG_SND_DEBUG_VERBOSE is set, and the reference to it in
snd_printdd() argument triggers the build errors, too.  For avoiding
these errors, introduce a new macro snd_pci_quirk_name() that is
defined no matter how the debug option is set.
Reported-by: NStratos Karafotis <stratosk@semaphore.gr>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      86b27237
  31. 07 12月, 2012 1 次提交
  33. 06 10月, 2012 1 次提交
  35. 07 9月, 2012 1 次提交
  37. 15 8月, 2012 1 次提交
  39. 03 7月, 2012 1 次提交
  41. 24 4月, 2012 1 次提交
  43. 14 2月, 2012 1 次提交
  45. 13 1月, 2012 1 次提交
    • R
      module_param: avoid bool abuse, add bint for special cases. · 69116f27
      由 Rusty Russell 提交于 
      For historical reasons, we allow module_param(bool) to take an int (or
an unsigned int).  That's going away.

A few drivers really want an int: they set it to -1 and a parameter
will set it to 0 or 1.  This sucks: reading them from sysfs will give
'Y' for both -1 and 1, but if we change it to an int, then the users
might be broken (if they did "param" instead of "param=1").

Use a new 'bint' parser for them.

(ntfs has a different problem: it needs an int for debug_msgs because
it's also exposed via sysctl.)

Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Cc: Christoph Raisch <raisch@de.ibm.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Sean Hefty <sean.hefty@intel.com>
Cc: Hal Rosenstock <hal.rosenstock@gmail.com>
Cc: linux390@de.ibm.com
Cc: Anton Altaparmakov <anton@tuxera.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: lm-sensors@lm-sensors.org
Cc: linux-rdma@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux-ntfs-dev@lists.sourceforge.net
Cc: alsa-devel@alsa-project.org
Acked-by: Takashi Iwai <tiwai@suse.de> (For the sound part)
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> (For the hwmon driver)
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      69116f27
  47. 19 12月, 2011 1 次提交
  49. 10 11月, 2011 2 次提交
  51. 08 11月, 2011 1 次提交
  53. 01 11月, 2011 2 次提交
  55. 31 10月, 2011 1 次提交
    • K
      ALSA: intel8x0: Improve performance in virtual environment · 228cf793
      由 Konstantin Ozerkov 提交于 
      v3: detection code is x86 and KVM specific, hide it under ifdef
v2: add detection for virtual environments (KVM and Parallels)

This patch is intended to improve performance in virtualized environments
like Parallels Desktop or KVM/VirtualBox/QEMU (virtual ICH/AC97 audio).

I/O access is very time-expensive operation in virtual world: VCPU
can be rescheduled and in the worst case we get more than 10ms delay on
each I/O access.

In the virtual environment loop exit rule
(old_civ == current_civ && old_picb == current_picb) is never satisfied,
because old_picb is never the same as current_picb due to delay inspired
by reading current_civ. As a result loop ended by timeout and we get 10x
more I/O operations.

Experimental data from Prallels Desktop 7, RHEL6 guest (I/O ops per
second):

Original code:
In Port    Counter         Callback
   f014      41550         fffff00000179d00 ac97_bm_read_civ+0x000
   f018      41387         fffff0000017a580 ac97_bm_read_picb+0x000

With patch:
In Port    Counter         Callback
   f014       4090         fffff00000179d00 ac97_bm_read_civ+0x000
   f018       1964         fffff0000017a580 ac97_bm_read_picb+0x000
Signed-off-by: NKonstantin Ozerkov <kozerkov@parallels.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      228cf793
  57. 15 7月, 2011 1 次提交
  59. 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
  61. 31 3月, 2011 1 次提交
  63. 22 11月, 2010 1 次提交
  65. 18 10月, 2010 1 次提交
  67. 19 8月, 2010 1 次提交
  69. 09 2月, 2010 1 次提交
  71. 25 11月, 2009 1 次提交
  73. 05 11月, 2009 1 次提交