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Commit Graph

119607 Commits

Author SHA1 Message Date
Peter Ujfalusi
53b5047d99 ASoC: TWL4030: Correct DAPM_DAC with power control
Add all four DACs to dapm_widgets with power switch.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-09 10:05:02 +00:00
Daniel Mack
28a1d86956 ASoC: tlv320aic3x: control additions and cleanups
- split "Line Playback Switch" into "LineL Playback Switch" and "LineR
  Playback Switch"
- split "Line PGA Bypass Playback Volume" into "LineL Left PGA Bypass
  Playback Volume" and "LineR Right PGA Bypass Playback Volume"
- split "Line Line2 Bypass Playback Volume" into "LineL Line2 Bypass
  Playback Volume" and "LineR Line2 Bypass Playback Volume"
- Added "HP Right PGA Bypass Playback Volume"

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-05 16:50:10 +00:00
Grazvydas Ignotas
68fb740774 ASoC: Add support for OMAP3 Pandora
This patch adds basic support for OMAP3 Pandora.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-05 16:27:48 +00:00
Mark Brown
32c8dabc97 ASoC: Remove obsolete declaration of struct snd_soc_clock_info
The struct is never defined.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-04 11:17:02 +00:00
Mark Brown
dc7d7b830e ASoC: Remove platform device from DAI suspend and resume operations
None of the DAIs use it except s3c2412-i2s which only uses it for
dev_() printouts.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 19:19:10 +00:00
Mark Brown
07c84d0409 ASoC: Remove device from platform suspend and resume operations
None of the platforms are actually using the SoC device so remove it
(only atmel actually has a suspend method).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 18:27:10 +00:00
Mark Brown
384c89e2e4 ASoC: Push debugfs files out of the snd_soc_device structure
This is in preparation for the removal of struct snd_soc_device.

The pop time configuration should really be a property of the card not
the codec but since DAPM currently uses the codec rather than the card
using the codec is fine for now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 18:27:04 +00:00
Daniel Mack
6f2a974bfc ASoC: tlv320aic3x: headset/button press support
- Add aic3x_set_headset_detection() function to define the headset
  detection mode for tlv32aic3x chips
- added aic3x_button_pressed()
- Read from the real-time registers in aic3x_headset_detected() to query
  headset presence without an occured interrupt

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 12:40:45 +00:00
Mark Brown
4b4fffdd9d ASoC: Fix WM8903 right mixer bypass path
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 12:40:28 +00:00
Grazvydas Ignotas
5920b45303 ASoC: TWL4030: Add input selection and gain controls
The TWL4030 codec device has two ADCs. Both of them can have
several inputs routed to them, but TRM says that only one source
can be selected for every ADC, even though every source has a
dedicated bit in the registers.

This patch adds input source controls. It modifies default register
values to have no inputs selected and ADCs disabled. When some
input is selected, control handlers enable apropriate input
amplifier and ADC. If a microphone is selected, bias power is
automatically enabled. When some input is deselected, unused
chip parts are disabled.

Microphone and line input recording tested on OMAP3 pandora board.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 12:40:28 +00:00
Mark Brown
87689d567a ASoC: Push platform registration down into the card
As part of the deprecation of snd_soc_device push the registration of
the platform down into the card structure.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-02 16:03:40 +00:00
Mark Brown
6308419a19 ASoC: Push workqueue data into snd_soc_card
ASoC v2 does not use the struct snd_soc_device at runtime, using struct
snd_soc_card as the root of the card.  Begin removing data from
snd_soc_device by pushing the workqueue data into snd_soc_card, using a
backpointer to the snd_soc_device to keep things going for the time
being.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-02 15:16:23 +00:00
Mark Brown
0ecfe79878 ASoC: Don't free static data in WM9713
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:55 +00:00
Peter Ujfalusi
4290239cd0 ASoC: TWL4030: Add volume controls for outputs
All outputs have dedicated gain controls except the
HandsFree output.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:54 +00:00
Peter Ujfalusi
d889a72c5c ASoC: TWL4030: Change the common playback volume controls
Add Playback volume controls for all four DACs.
All four paths has three levels of volume controls:
Digital Fine gain, Digital Coarse gain, Analog gain.

The controls are named to reflect their connection to the DACs.
Per DAC volume can be performed, if needed:
amixer sset 'DAC1 Analog'  5,10
DACL1 analog gain to 5
DACR1 analog gain to 10

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:53 +00:00
Peter Ujfalusi
381a22b564 ASoC: TWL4030: Change the capture volume control to TLV
The digital Capture gain control has a range:
0 to 31 dB in 1 dB steps.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:52 +00:00
Mark Brown
fa5c76978c ASoC: Remove in-code changelog from AD73311 driver
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:52 +00:00
Mark Brown
7d8c16a6f7 ASoC: Annotate core removal function
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:51 +00:00
Mark Brown
968a6025aa ASoC: Rename snd_soc_register_card() to snd_soc_init_card()
Currently ASoC card initialisation is completed by a function called
snd_soc_register_card().  As part of the work to allow independant
registration of cards, codecs and machines in ASoC v2 a new function of
the same name has been added so rename the existing function to
facilitate the merge of v2.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:50 +00:00
Takashi Iwai
682d5874f3 ALSA: ASoC: Fix old-style trigger callback in s3c2443-ac97.c
Fix the old-style trigger callback in s3c2443-ac97.c:
    sound/soc/s3c24xx/s3c2443-ac97.c:378: warning: initialization from incompatible pointer type

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 20:08:22 +01:00
Takashi Iwai
5220ed6b32 ALSA: ASoC: Fix compile warnings on corgi.c
Fix the wrong shutdown callback type.  Also removed the unused variables
there:

  sound/soc/pxa/corgi.c: In function 'corgi_shutdown':
  sound/soc/pxa/corgi.c:114: warning: unused variable 'codec'
  sound/soc/pxa/corgi.c: At top level:
  sound/soc/pxa/corgi.c:175: warning: initialization from incompatible pointer type

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 20:00:47 +01:00
Takashi Iwai
0bc286e2ac Revert "ALSA: soc - Fix compile warnings in wm8903.c"
This reverts commit 9171e5e6a2.

I can't reproduce the compile warnings any more.  The warnings
might be some weird cross-compiling set up.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 20:00:20 +01:00
Takashi Iwai
2caf6a1f9c ALSA: ASoC: Remove superfluous dependency on SND_SOC
The dependency on SND_SOC is already fulfilled in sound/soc/Kconfig,
thus no more need in Kconfig of each sub directory.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 18:02:33 +01:00
Takashi Iwai
3af4182cc5 Merge branch 'upstream' into topic/asoc 2008-12-01 18:02:17 +01:00
Linus Torvalds
c07f62e5f1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Apple ALU wireless keyboards are bluetooth devices
  HID: remove setup mutex, fix possible deadlock
  HID: add USB ID for another dual gameron adapter
  HID: unignore mouse on unibody macbooks
  HID: fix blacklist entries for greenasia/pantherlord
2008-12-01 08:33:59 -08:00
Kevin Hao
e5404586a4 Add kref to fake tty used by USB console
We alloc a fake tty in usb serial console setup function. we should
init the tty's kref otherwise we will face WARN_ON after following
invoke of tty_port_tty_set --> tty_kref_get.

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 08:19:10 -08:00
Will Newton
296fa7f6a3 drivers/char/tty_io.c: Avoid panic when no console is configured.
When no console is configured tty_open tries to call kref_get on a NULL
pointer, return ENODEV instead.

Signed-off-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 08:19:10 -08:00
Linus Torvalds
b4dcfbee3b Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: serial: add more Onda device ids to option driver
  USB: usb-storage: unusual_devs entry for Nikon D2H
  USB: storage: unusual_devs entry for Mio C520-GPS
  USB: fsl_usb2_udc: Report disconnect before unbinding
  USB: fsl_qe_udc: Report disconnect before unbinding
  USB: fix SB600 USB subsystem hang bug
  Revert "USB: improve ehci_watchdog's side effect in CPU power management"
2008-12-01 07:58:49 -08:00
Linus Torvalds
ecf318cc3d Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: Fix build for 32-bit SMP configs
2008-12-01 07:58:23 -08:00
Johannes Weiner
2a1dc50974 vmscan: protect zone rotation stats by lru lock
The zone's rotation statistics must not be accessed without the
corresponding LRU lock held.  Fix an unprotected write in
shrink_active_list().

Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 07:58:06 -08:00
Linus Torvalds
33b07db9f3 Revert "of_platform_driver noise on sparce"
This reverts commit e669dae614, since it
is incomplete, and clashes with fuller patches and the sparc 32/64
unification effort.

Requested-by: David Miller <davem@davemloft.net>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-01 07:55:14 -08:00
Takashi Iwai
f5d4c67e41 ALSA: soc - Remove obsoleted sound/driver.h inclusion
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 16:29:47 +01:00
Takashi Iwai
9171e5e6a2 ALSA: soc - Fix compile warnings in wm8903.c
Hide annoying uninitialized warnings:
  sound/soc/codecs/wm8903.c:382: warning: ‘reg’ may be used uninitialized in this function
  sound/soc/codecs/wm8903.c:383: warning: ‘shift’ may be used uninitialized in this function

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-12-01 15:39:13 +01:00
Greg Kroah-Hartman
5bb4bd9895 USB: serial: add more Onda device ids to option driver
Thanks to Domenico Riccio for pointing these out.

Cc: Domenico Riccio <domenico.riccio@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:03 -08:00
Tobias Kunze Briseño
621b239d75 USB: usb-storage: unusual_devs entry for Nikon D2H
This patch adds an unusual_devs entry for the Nikon D2H camera.

From: Tobias Kunze Briseño <t@fictive.com>,
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:03 -08:00
Alan Stern
a6b7b034d7 USB: storage: unusual_devs entry for Mio C520-GPS
This patch (as1176) adds an unusual_devs entry for the Mio C520 GPS
unit.  Other devices also based on the Mitac hardware use the same USB
interface firmware, so the Vendor and Product names are generalized.

This fixes Bugzilla #11583.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Tamas Kerecsen <kerecsen@bigfoot.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:03 -08:00
Anton Vorontsov
1f15a506f3 USB: fsl_usb2_udc: Report disconnect before unbinding
Gadgets disable endpoints in their disconnect callbacks, so
we must call disconnect before unbinding.

The patch fixes following badness:

root@b1:~# insmod fsl_usb2_udc.ko
Freescale High-Speed USB SOC Device Controller driver (Apr 20, 2007)
root@b1:~# insmod g_ether.ko
g_ether gadget: using random self ethernet address
g_ether gadget: using random host ethernet address
usb0: MAC 26:07:ba:c0:44:33
usb0: HOST MAC 96:81:0c:05:4d:e3
g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
g_ether gadget: g_ether ready
fsl-usb2-udc: bind to driver g_ether
g_ether gadget: high speed config #1: CDC Ethernet (ECM)
root@b1:~# rmmod g_ether.ko
------------[ cut here ]------------
Badness at drivers/usb/gadget/composite.c:871
[...]
NIP [e10c3454] composite_unbind+0x24/0x15c [g_ether]
LR [e10aa454] usb_gadget_unregister_driver+0x13c/0x164 [fsl_usb2_udc]
Call Trace:
[df145e80] [ffffff94] 0xffffff94 (unreliable)
[df145eb0] [e10aa454] usb_gadget_unregister_driver+0x13c/0x164 [fsl_usb2_udc]
[df145ed0] [e10c4c40] usb_composite_unregister+0x3c/0x4c [g_ether]
[df145ee0] [c006bcc0] sys_delete_module+0x130/0x19c
[df145f40] [c00142d8] ret_from_syscall+0x0/0x38
[...]
unregistered gadget driver 'g_ether'

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:03 -08:00
Anton Vorontsov
9ac36da3f8 USB: fsl_qe_udc: Report disconnect before unbinding
Gadgets disable endpoints in their disconnect callbacks, so
we must call disconnect before unbinding. This also fixes
muram memory leak, since we free muram in the qe_ep_disable().

But mainly the patch fixes following badness:

root@b1:~# insmod fsl_qe_udc.ko
fsl_qe_udc: Freescale QE/CPM USB Device Controller driver, 1.0
fsl_qe_udc e01006c0.usb: QE USB controller initialized as device
root@b1:~# insmod g_ether.ko
g_ether gadget: using random self ethernet address
g_ether gadget: using random host ethernet address
usb0: MAC be:2d:3c:fa:be:f0
usb0: HOST MAC 62:b8:6a:df:38:66
g_ether gadget: Ethernet Gadget, version: Memorial Day 2008
g_ether gadget: g_ether ready
fsl_qe_udc e01006c0.usb: fsl_qe_udc bind to driver g_ether
g_ether gadget: high speed config #1: CDC Ethernet (ECM)
root@b1:~# rmmod g_ether.ko
------------[ cut here ]------------
Badness at drivers/usb/gadget/composite.c:871
[...]
NIP [d10c1374] composite_unbind+0x24/0x15c [g_ether]
LR [d10a82f4] usb_gadget_unregister_driver+0x128/0x168 [fsl_qe_udc]
Call Trace:
[cfb93e80] [cfb1f3a0] 0xcfb1f3a0 (unreliable)
[cfb93eb0] [d10a82f4] usb_gadget_unregister_driver+0x128/0x168 [fsl_qe_udc]
[cfb93ed0] [d10c2a3c] usb_composite_unregister+0x3c/0x4c [g_ether]
[cfb93ee0] [c006bde0] sys_delete_module+0x130/0x19c
[cfb93f40] [c00142d8] ret_from_syscall+0x0/0x38
[...]
fsl_qe_udc e01006c0.usb: unregistered gadget driver 'g_ether'

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:02 -08:00
Shane Huang
0a99e8ac43 USB: fix SB600 USB subsystem hang bug
This patch is required for all AMD SB600 revisions to avoid USB subsystem hang
symptom. The USB subsystem hang symptom is observed when the system has
multiple USB devices connected to it. In some cases a USB hub may be required
to observe this symptom.

Reported in bugzilla as #11599, the similar patch for SB700 old revision is:
commit b09bc6cbae

Reported-by: raffaele <ralfconn@tele2.it>
Tested-by: Roman Mamedov <roman@rm.pp.ru>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:02 -08:00
Greg Kroah-Hartman
269f053233 Revert "USB: improve ehci_watchdog's side effect in CPU power management"
This reverts commit f0d781d59c.

It was the wrong thing to do, and does not really do what it said
it did.

Cc: Yi Yang <yi.y.yang@intel.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-11-30 22:24:02 -08:00
Milton Miller
a1e0eb1042 powerpc: Fix build for 32-bit SMP configs
attr_smt_snooze_delay is only defined for CONFIG_PPC64, so protect the
attribute removal with the same condition.  This fixes this build error
on 32-bit SMP configurations:

/data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c: In function ‘unregister_cpu_online’:
/data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: ‘attr_smt_snooze_delay’ undeclared (first use in this function)
/data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: (Each undeclared identifier is reported only once
/data/home/miltonm/next.git/arch/powerpc/kernel/sysfs.c:722: error: for each function it appears in.)

Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01 13:28:19 +11:00
Linus Torvalds
d9d060a98f Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Fix copy'n'pasteo that broke VT switch if flushing was non-empty.
2008-11-30 16:45:13 -08:00
Linus Torvalds
03cfdb86ac Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: Fix system calls on Cell entered with XER.SO=1
  powerpc/cell: Fix GDB watchpoints, again
  powerpc/mpic: Don't reset affinity for secondary MPIC on boot
  powerpc/cell/axon-msi: Retry on missing interrupt
  powerpc: Fix boot freeze on machine with empty memory node
  powerpc: Fix IRQ assignment for some PCIe devices
  powerpc/spufs: Fix spinning in spufs_ps_fault on signal
  powerpc/mpc832x_rdb: fix swapped ethernet ids
  powerpc: Use generic PHY driver for Marvell 88E1111 PHY on GE Fanuc SBC610
  powerpc/85xx: L2 cache size wrong in 8572DS dts
  powerpc/virtex: Update defconfigs
  powerpc/52xx: update defconfigs
  xsysace: Fix driver to use resource_size_t instead of unsigned long
  powerpc/virtex: fix various format/casting printk mismatches
  powerpc/mpc5200: fix bestcomm Kconfig dependencies
  powerpc/44x: Fix 460EX/460GT machine check handling
  powerpc/40x: Limit allocable DRAM during early mapping
2008-11-30 16:44:18 -08:00
Linus Torvalds
4ec8f077e4 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  Allow architectures to override copy_user_highpage()
  [ARM] pxa/palmtx: misc fixes to use generic GPIO API
  ARM: OMAP: Fixes for suspend / resume GPIO wake-up handling
  [ARM] pxa/corgi: update default config to exclude tosa from being built
  [ARM] pxa/pcm990: use negative number for an invalid GPIO in camera data
  ARM: OMAP: Typo fix for clock_allow_idle
  ARM: OMAP: Remove broken LCD driver for SX1
  [ARM] 5335/1: pxa25x_udc: Fix is_vbus_present to return 1 or 0
  [ARM] pxa/MioA701: bluetooth resume fix
  [ARM] pxa/MioA701: fix memory corruption.
2008-11-30 16:39:06 -08:00
Eric Anholt
151903d546 drm/i915: Fix copy'n'pasteo that broke VT switch if flushing was non-empty.
Introduced in the "Avoid BUG_ONs on VT switch" commit.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-01 10:23:21 +10:00
Paul Mackerras
ab598b6680 powerpc: Fix system calls on Cell entered with XER.SO=1
It turns out that on Cell, on a kernel with CONFIG_VIRT_CPU_ACCOUNTING
= y, if a program sets the SO (summary overflow) bit in the XER and
then does a system call, the SO bit in CR0 will be set on return
regardless of whether the system call detected an error.  Since CR0.SO
is used as the error indication from the system call, this means that
all system calls appear to fail.

The reason is that the workaround for the timebase bug on Cell uses a
compare instruction.  With CONFIG_VIRT_CPU_ACCOUNTING = y, the
ACCOUNT_CPU_USER_ENTRY macro reads the timebase, so we end up doing a
compare instruction, which copies XER.SO to CR0.SO.  Since we were
doing this in the system call entry patch after clearing CR0.SO but
before saving the CR, this meant that the saved CR image had CR0.SO
set if XER.SO was set on entry.

This fixes it by moving the clearing of CR0.SO to after the
ACCOUNT_CPU_USER_ENTRY call in the system call entry path.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2008-12-01 09:40:19 +11:00
Arnd Bergmann
960cedb4e3 powerpc/cell: Fix GDB watchpoints, again
An earlier patch from Jens Osterkamp attempted to fix GDB
watchpoints by enabling the DABRX register at boot time.
Unfortunately, this did not work on SMP setups, where
secondary CPUs were still using the power-on DABRX value.

This introduces the same change for secondary CPUs on cell
as well.

Reported-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Tested-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01 09:40:18 +11:00
Arnd Bergmann
cc353c30bb powerpc/mpic: Don't reset affinity for secondary MPIC on boot
Kexec/kdump currently fails on the IBM QS2x blades when the kexec happens
on a CPU other than the initial boot CPU.  It turns out that this is the
result of mpic_init trying to set affinity of each interrupt vector to the
current boot CPU.

As far as I can tell,  the same problem is likely to exist on any
secondary MPIC, because they have to deliver interrupts to the first
output all the time. There are two potential solutions for this: either
not set up affinity at all for secondary MPICs, or assume that a single
CPU output is connected to the upstream interrupt controller and hardcode
affinity to that per architecture.

This patch implements the second approach, defaulting to the first output.
Currently, all known secondary MPICs are routed to their upstream port
using the first destination, so we hardcode that.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01 09:40:18 +11:00
Arnd Bergmann
d015fe9951 powerpc/cell/axon-msi: Retry on missing interrupt
The MSI capture logic for the axon bridge can sometimes
lose interrupts in case of high DMA and interrupt load,
when it signals an MSI interrupt to the MPIC interrupt
controller while we are already handling another MSI.

Each MSI vector gets written into a FIFO buffer in main
memory using DMA, and that DMA access is normally flushed
by the actual interrupt packet on the IOIF.  An MMIO
register in the MSIC holds the position of the last
entry in the FIFO buffer that was written.  However,
reading that position does not flush the DMA, so that
we can observe stale data in the buffer.

In a stress test, we have observed the DMA to arrive
up to 14 microseconds after reading the register.

This patch works around this problem by retrying the
access to the FIFO buffer.

We can reliably detect the conditioning by writing
an invalid MSI vector into the FIFO buffer after
reading from it, assuming that all MSIs we get
are valid.  After detecting an invalid MSI vector,
we udelay(1) in the interrupt cascade for up to
100 times before giving up.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01 09:40:18 +11:00
Dave Hansen
4a6186696e powerpc: Fix boot freeze on machine with empty memory node
I got a bug report about a distro kernel not booting on a particular
machine.  It would freeze during boot:

> ...
> Could not find start_pfn for node 1
> [boot]0015 Setup Done
> Built 2 zonelists in Node order, mobility grouping on.  Total pages: 123783
> Policy zone: DMA
> Kernel command line:
> [boot]0020 XICS Init
> [boot]0021 XICS Done
> PID hash table entries: 4096 (order: 12, 32768 bytes)
> clocksource: timebase mult[7d0000] shift[22] registered
> Console: colour dummy device 80x25
> console handover: boot [udbg0] -> real [hvc0]
> Dentry cache hash table entries: 1048576 (order: 7, 8388608 bytes)
> Inode-cache hash table entries: 524288 (order: 6, 4194304 bytes)
> freeing bootmem node 0

I've reproduced this on 2.6.27.7.  It is caused by commit
8f64e1f2d1 ("powerpc: Reserve in bootmem
lmb reserved regions that cross NUMA nodes").

The problem is that Jon took a loop which was (in pseudocode):

	for_each_node(nid)
		NODE_DATA(nid) = careful_alloc(nid);
		setup_bootmem(nid);
		reserve_node_bootmem(nid);

and broke it up into:

	for_each_node(nid)
		NODE_DATA(nid) = careful_alloc(nid);
		setup_bootmem(nid);
	for_each_node(nid)
		reserve_node_bootmem(nid);

The issue comes in when the 'careful_alloc()' is called on a node with
no memory.  It falls back to using bootmem from a previously-initialized
node.  But, bootmem has not yet been reserved when Jon's patch is
applied.  It gives back bogus memory (0xc000000000000000) and pukes
later in boot.

The following patch collapses the loop back together.  It also breaks
the mark_reserved_regions_for_nid() code out into a function and adds
some comments.  I think a huge part of introducing this bug is because
for loop was too long and hard to read.

The actual bug fix here is the:

+		if (end_pfn <= node->node_start_pfn ||
+		    start_pfn >= node_end_pfn)
+			continue;

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-12-01 09:40:18 +11:00