Commit graph

36489 commits

Author SHA1 Message Date
Jayamohan Kallickal
309ce156aa [SCSI] libiscsi: Make iscsi_eh_target_reset start with session reset
The iscsi_eh_target_reset has been modified to attempt
target reset only. If it fails, then iscsi_eh_session_reset
will be called.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-03-03 17:39:04 +05:30
Herbert Xu
87c1e12b5e ipsec: Fix bogus bundle flowi
When I merged the bundle creation code, I introduced a bogus
flowi value in the bundle.  Instead of getting from the caller,
it was instead set to the flow in the route object, which is
totally different.

The end result is that the bundles we created never match, and
we instead end up with an ever growing bundle list.

Thanks to Jamal for find this problem.

Reported-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-03 01:04:37 -08:00
Alan Cox
2832fc11f1 USB: tty: Add a function to insert a string of characters with the same flag
The USB drivers often want to insert a series of bytes all with the same
flag set - provide a helper for this case.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:55:11 -08:00
Dennis O'Brien
6d61ae9112 USB: vstusb.c: removal of driver for Vernier Software & Technology, Inc., devices and spectrometers
This patch removes the vstusb driver and support from the Linux tree.
This driver provided support for Vernier Software & Technology devices
and spectrometers (Ocean Optics). This driver is being replaced by a
user space - libusb - implementation.

Signed-off-by: Jim Collar <jim.collar@eqware.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:55:08 -08:00
Joe Perches
efcbd3df07 USB: Extend and neaten dbg macros
Add format/argument validation for #ifndef DEBUG dbg macro
Neaten dbg macro definitions

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:59 -08:00
Eirik Aanonsen
640e95abdf USB: atmel uaba: Adding invert vbus_pin
Adding vbus_pin_inverted so that the usb detect pin can be active high
or low depending on HW implementation also replaced the
gpio_get_value(udc->vbus_pin); with a call to vbus_is_present(udc); This
allows the driver to be loaded and save about 0,15W on the consumption.

Signed-off-by: Eirik Aanonsen <eaa@wprmedical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:57 -08:00
Felipe Balbi
c58bfa6b97 USB: musb: deprecate what we don't use
after 2.6.34, those fields will be removed from
struct musb_hdrc_platform_data, it's expected
that other architectures are fixed by then.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:40 -08:00
Alan Stern
9bbdf1e0af USB: convert to the runtime PM framework
This patch (as1329) converts the USB stack over to the PM core's
runtime PM framework.  This involves numerous changes throughout
usbcore, especially to hub.c and driver.c.  Perhaps the most notable
change is that CONFIG_USB_SUSPEND now depends on CONFIG_PM_RUNTIME
instead of CONFIG_PM.

Several fields in the usb_device and usb_interface structures are no
longer needed.  Some code which used to depend on CONFIG_USB_PM now
depends on CONFIG_USB_SUSPEND (requiring some rearrangement of header
files).

The only visible change in behavior should be that following a system
sleep (resume from RAM or resume from hibernation), autosuspended USB
devices will be resumed just like everything else.  They won't remain
suspended.  But if they aren't in use then they will naturally
autosuspend again in a few seconds.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:12 -08:00
Alan Stern
088f7fec8a USB: implement usb_enable_autosuspend
This patch (as1326) adds usb_enable_autosuspend() and
usb_disable_autosuspend() routines for use by drivers.  If a driver
knows that its device can handle suspends and resumes correctly, it
can enable autosuspend all by itself.  This is equivalent to the user
writing "auto" to the device's power/level attribute.

The implementation differs slightly from what it used to be.  Now
autosuspend is disabled simply by doing usb_autoresume_device() (to
increment the usage counter) and enabled by doing
usb_autosuspend_device() (to decrement the usage counter).

The set_level() attribute method is updated to use the new routines,
and the USB Power-Management documentation is updated.

The patch adds a usb_enable_autosuspend() call to the hub driver's
probe routine, allowing the special-case code for hubs in quirks.c to
be removed.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:54:10 -08:00
Ajay Kumar Gupta
5fc4e77911 usb: musb: Add 'extvbus' in musb_hdrc_platform_data
Some of the board might use external Vbus power supply on musb
interface which would require to program ULPI_BUSCONTROL register.

Adding 'extvbus' flag which can be set from such boards which will
be checked at musb driver files before programming ULPI_BUSCONTROL.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:53:48 -08:00
Greg Kroah-Hartman
551cdbbeb1 USB: rename USB_SPEED_VARIABLE to USB_SPEED_WIRELESS
It's really the wireless speed, so rename the thing to make
more sense.  Based on a recommendation from David Vrabel

Cc: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:53:36 -08:00
Oliver Neukum
5d3987796c USB: storage: Never reset devices that will morph to an old mode
Some devices must be switched to a new mode to fully use them.
A reset would make them revert to the old mode. Therefore a reset
must not be used for error handling with such devices.

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:53:23 -08:00
Felipe Balbi
e9a20171df USB: otg: add notifier support
The notifier will be used to communicate usb events
to other drivers like the charger chip.

This can be used as source of information to kick
usb charger detection as described by the USB
Battery Charging Specification 1.1 and/or to
pass bMaxPower field of selected usb_configuration
to charger chip in order to use that information
as input current on the charging profile
setup.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:53:21 -08:00
Linus Torvalds
832d30ca72 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (38 commits)
  SELinux: Make selinux_kernel_create_files_as() shouldn't just always return 0
  TOMOYO: Protect find_task_by_vpid() with RCU.
  Security: add static to security_ops and default_security_ops variable
  selinux: libsepol: remove dead code in check_avtab_hierarchy_callback()
  TOMOYO: Remove __func__ from tomoyo_is_correct_path/domain
  security: fix a couple of sparse warnings
  TOMOYO: Remove unneeded parameter.
  TOMOYO: Use shorter names.
  TOMOYO: Use enum for index numbers.
  TOMOYO: Add garbage collector.
  TOMOYO: Add refcounter on domain structure.
  TOMOYO: Merge headers.
  TOMOYO: Add refcounter on string data.
  TOMOYO: Reduce lines by using common path for addition and deletion.
  selinux: fix memory leak in sel_make_bools
  TOMOYO: Extract bitfield
  syslog: clean up needless comment
  syslog: use defined constants instead of raw numbers
  syslog: distinguish between /proc/kmsg and syscalls
  selinux: allow MLS->non-MLS and vice versa upon policy reload
  ...
2010-03-02 14:47:24 -08:00
Ari Entlich
eec9fe7d1a tty: Add a new VT mode which is like VT_PROCESS but doesn't require a VT_RELDISP ioctl call
This new VT mode (VT_PROCESS_AUTO) does everything that VT_PROCESS does
except that it doesn't wait for a VT_RELDISP ioctl before switching
away from a VT with that mode.

If the X server eventually uses this new mode, debugging and crash
recovery should become easier. This is because even when currently in
the VT of a frozen X server it would still be possible to switch out
by doing SysRq-r and then CTRL-<number of a text vt>, sshing in and
doing chvt <number of a text vt>, or any other method of VT switching.
The general concensus on #xorg-devel seems to be that it should be
safe to use this with X now that we have KMS.

This also moves the VT_ACKACQ define to a more appropriate place,
for clarity's sake.

Signed-off-by: Ari Entlich <atrigent@ccs.neu.edu>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:43:23 -08:00
Alan Cox
d9661adfb8 tty: Keep the default buffering to sub-page units
We allocate during interrupts so while our buffering is normally diced up
small anyway on some hardware at speed we can pressure the VM excessively
for page pairs. We don't really need big buffers to be linear so don't try
so hard.

In order to make this work well we will tidy up excess callers to request_room,
which cannot itself enforce this break up.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:43:23 -08:00
Kiros Yeh
2a52fcb54f serial: add support for Korenix JetCard
Add different model (with a different PCI ID) to support Korenix JetCard.

Signed-off-by: Kiros Yeh <kiros@korenix.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:43:10 -08:00
Ira W. Snyder
ac6ec5b1de serial: 8250_pci: add support for MCS9865 / SYBA 6x Serial Port Card
This patch is heavily based on an earlier patch found on the linux-serial
mailing list [1], written by Darius Augulis.

The previous incarnation of this patch only supported a 2x serial port
card.  I have added support for my SYBA 6x serial port card, and tested on
x86.

[1]: http://marc.info/?l=linux-serial&m=124975806304760

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-02 14:43:08 -08:00
Matthew Garrett
3082a2b7b1 rfkill: Add support for KEY_RFKILL
Add support for handling KEY_RFKILL in the rfkill input module. This
simply toggles the state of all rfkill devices. The comment in rfkill.h
is also updated to reflect that RFKILL_TYPE_ALL may be used inside the
kernel.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-03-02 14:28:49 -05:00
Linus Torvalds
3a5b27bf6f Merge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linux
* 'for-linus' of git://gitorious.org/linux-omap-dss2/linux: (49 commits)
  OMAP: DSS2: Taal: Fix TE when resuming
  OMAP: DSS2: Taal: Fix ESD check
  OMAP: DSS2: OMAPFB: Constify some function parameters
  OMAP: DSS2: OMAPFB: install omapfb.h
  OMAP: DSS2: DSI: add error prints
  OMAP: DSS2: TPO-TD03MTEA1: fix function names
  OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helper
  OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATE
  OMAP: DSS2: DSI: remove external TE support
  OMAP: DSS2: move timing functions
  OMAP: DSS2: move set/get_wss()
  OMAP: DSS2: move enable/disable/suspend/resume
  OMAP: DSS2: move update() and sync()
  OMAP: DSS2: move set/get_update_mode()
  OMAP: DSS2: move enable/get_te()
  OMAP: DSS2: move get_recommended_bpp()
  OMAP: DSS2: move get_resolution()
  OMAP: DSS2: move enable/disable_channel to overlay manager
  OMAP: DSS2: move wait_vsync()
  OMAP: DSS2: move get/set_rotate()
  ...
2010-03-02 10:41:26 -08:00
Linus Torvalds
5057bfaff8 Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (214 commits)
  omap2: Initialize Menelaus and MMC for N8X0
  AM3517 EVM: correct typo - tca6416 mispelt as tca6516
  AM3517 EVM: Enable I2C support
  AM35x: Enable OMAP_MUX in defconfig
  AM35x: Add missing GPIO mux config for EHCI port
  Zoom3: Defconfig update
  omap: i2c: Fix muxing for command line enabled bus
  OMAP4: clock: Remove clock hacks from timer-gp.c
  OMAP4: clock: Add dummy clock nodes for interface clocks
  OMAP4: clock: Rename leaf clock nodes to end with a _ick or _fck
  OMAP2+ clock: revise omap2_clk_{disable,enable}()
  OMAP2/3 clock: combine OMAP2 & 3 boot-time MPU rate change code
  OMAP clockdomain: if no autodeps exist, don't try to add or remove them
  OMAP hwmod: add hwmod class support
  OMAP hwmod: convert header files with static allocations into C files
  OMAP hwmod: convert hwmod to use hardware clock names rather than clkdev dev+con
  OMAP clock: add omap_clk_get_by_name() for use by OMAP hwmod core code
  OMAP3: clock: add capability to change rate of dpll4_m5_ck_3630
  OMAP4 clock: drop the ALWAYS_ENABLED clock flag
  OMAP clock: drop RATE_FIXED clock flag
  ...
2010-03-02 10:34:25 -08:00
Linus Torvalds
6d6b89bd2e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1341 commits)
  virtio_net: remove forgotten assignment
  be2net: fix tx completion polling
  sis190: fix cable detect via link status poll
  net: fix protocol sk_buff field
  bridge: Fix build error when IGMP_SNOOPING is not enabled
  bnx2x: Tx barriers and locks
  scm: Only support SCM_RIGHTS on unix domain sockets.
  vhost-net: restart tx poll on sk_sndbuf full
  vhost: fix get_user_pages_fast error handling
  vhost: initialize log eventfd context pointer
  vhost: logging thinko fix
  wireless: convert to use netdev_for_each_mc_addr
  ethtool: do not set some flags, if others failed
  ipoib: returned back addrlen check for mc addresses
  netlink: Adding inode field to /proc/net/netlink
  axnet_cs: add new id
  bridge: Make IGMP snooping depend upon BRIDGE.
  bridge: Add multicast count/interval sysfs entries
  bridge: Add hash elasticity/max sysfs entries
  bridge: Add multicast_snooping sysfs toggle
  ...

Trivial conflicts in Documentation/feature-removal-schedule.txt
2010-03-02 07:55:08 -08:00
Peter Zijlstra
320ebf09cb perf, x86: Restrict the ANY flag
The ANY flag can show SMT data of another task (like 'top'),
so we want to disable it when system-wide profiling is
disabled.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-02 15:06:46 +01:00
Zhangfei Gao
0c43ea544c i2c: Document the message size limit
i2c_master_send & i2c_master_recv do not support more than 64 kb
transfer, since msg.len is u16.

Signed-off-by: Zhangfei Gao <zgao6@marvell.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-03-02 12:23:49 +01:00
Jean Delvare
b5527a7766 i2c: Add SMBus alert support
SMBus alert support. The SMBus alert protocol allows several SMBus
slave devices to share a single interrupt pin on the SMBus master,
while still allowing the master to know which slave triggered the
interrupt.

This is based on preliminary work by David Brownell. The key
difference between David's implementation and mine is that his was
part of i2c-core, while mine is split into a separate, standalone
module named i2c-smbus. The i2c-smbus module is meant to include
support for all SMBus extensions to the I2C protocol in the future.

The benefit of this approach is a zero cost for I2C bus segments which
do not need SMBus alert support. Where David's implementation
increased the size of struct i2c_adapter by 7% (40 bytes on i386),
mine doesn't touch it. Where David's implementation added over 150
lines of code to i2c-core (+10%), mine doesn't touch it. The only
change that touches all the users of the i2c subsystem is a new
callback in struct i2c_driver (common to both implementations.) I seem
to remember Trent was worried about the footprint of David'd
implementation, hopefully mine addresses the issue.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Trent Piepho <tpiepho@freescale.com>
2010-03-02 12:23:42 +01:00
Eric Dumazet
4ab408dea0 net: fix protocol sk_buff field
Commit e992cd9b72 (kmemcheck: make bitfield annotations truly no-ops
when disabled) allows us to revert a workaround we did in the past to
not add holes in sk_buff structure.

This patch partially reverts commit 14d18a81b5
(net: fix kmemcheck annotations) so that sparse doesnt complain:

include/linux/skbuff.h:357:41: error: invalid bitfield specifier for
type restricted __be16.

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-02 03:05:05 -08:00
Roland Dreier
fe8875e5a4 Merge branch 'misc' into for-next
Conflicts:
	drivers/infiniband/core/uverbs_main.c
2010-03-01 23:52:31 -08:00
Roland Dreier
e8094e667a Merge branch 'cma' into for-next 2010-03-01 23:51:54 -08:00
Guennadi Liakhovetski
73a19e4c03 serial: sh-sci: Add DMA support.
Support using DMA for sending and receiving data over SCI(F) interfaces of
various SH SoCs.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-02 11:39:15 +09:00
Tony Lindgren
d702d12167 Merge with mainline to remove plat-omap/Kconfig conflict
Conflicts:
	arch/arm/plat-omap/Kconfig
2010-03-01 14:19:05 -08:00
Linus Torvalds
13dda80e48 Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (40 commits)
  DaVinci DM365: Adding support for SPI EEPROM
  DaVinci DM365: Adding DM365 SPI support
  DaVinci DM355: Modifications to DM355 SPI support
  DaVinci: SPI: Adding header file for SPI support.
  davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup
  davinci: clkdev cleanup: remove clk_lookup wrapper, use clkdev_add_table()
  DaVinci: DM365: Voice codec support for the DM365 SoC
  davinci: clock: let clk->set_rate function sleep
  Add SDA and SCL pin numbers to i2c platform data
  davinci: da8xx/omap-l1xx: Add EDMA platform data for da850/omap-l138
  davinci: build list of unused EDMA events dynamically
  davinci: Fix edma_alloc_channel api for EDMA_CHANNEL_ANY case
  davinci: Keep count of channel controllers on a platform
  davinci: Correct return value of edma_alloc_channel api
  davinci: add CDCE949 support on DM6467 EVM
  davinci: add support for CDCE949 clock synthesizer
  davinci: da850/omap-l138 EVM: register for suspend support
  davinci: da850/omap-l138: add support for SoC suspend
  davinci: add power management support
  DaVinci: DM365: Changing default queue for DM365.
  ...
2010-03-01 13:05:40 -08:00
Linus Torvalds
379e3a820d Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (38 commits)
  sata_via: Delay on vt6420 when starting ATAPI DMA write
  ata: Detect Delkin Devices compact flash
  pata_efar: Enable parallel scanning
  pata_atiixp: enable parallel scan
  [libata] pata_atiixp: add locking for parallel scanning
  [libata] pata_efar: add locking for parallel scanning
  libata: Pass host flags into the pci helper
  [libata] pata_marvell: CONFIG_AHCI is really CONFIG_SATA_AHCI
  libata: Allow pata_legacy to be built on non-ISA but PCI systems
  pata_pdc202xx_old: fix UDMA mode for PDC2026x chipsets
  pata_pdc202xx_old: fix UDMA mode for Promise UDMA33 cards
  [libata] pata_at91: fix backslash-continued string
  pata_via: store UDMA masks in via_isa_bridges table
  pata_via: fix address setup timings underlocking
  pata_serverworks: fix error message
  pata_serverworks: fix PIO setup for the second channel
  pata_efar: fix secondary port support
  pata_cypress: fix PIO timings underclocking
  pata_cs5535: use correct values for PIO1 and PIO2 data timings
  pata_cmd64x: remove unused definitions
  ...
2010-03-01 13:04:58 -08:00
Ben Gardner
4b7d1c0509 ata: Detect Delkin Devices compact flash
I have a Delkin Devices compact flash card that isn't being recognized using the
SATA/PATA drivers.
The card is recognized and works with the deprecated ATA drivers.

The error I am seeing is:
ata1.00: failed to IDENTIFY (device reports invalid type, err_mask=0x0)

I tracked it down to ata_id_is_cfa() in include/linux/ata.h.
The Delkin card has id[0] set to 0x844a and id[83] set to 0.
This isn't what the kernel expects and is probably incorrect.

The simplest work-around is to add a check for 0x844a to ata_id_is_cfa().

Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 15:11:32 -05:00
Alan Cox
16ea0fc98d libata: Pass host flags into the pci helper
This allows parallel scan and the like to be set without having to stop
using the existing full helper functions. This patch merely adds the argument
and fixes up the callers. It doesn't undo the special cases already in the
tree or add any new parallel callers.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:46 -05:00
Tejun Heo
27943620cb libata: implement spurious irq handling for SFF and apply it to piix
Traditional IDE interface sucks in that it doesn't have a reliable IRQ
pending bit, so if the controller raises IRQ while the driver is
expecting it not to, the IRQ won't be cleared and eventually the IRQ
line will be killed by interrupt subsystem.  Some controllers have
non-standard mechanism to indicate IRQ pending so that this condition
can be detected and worked around.

This patch adds an optional operation ->sff_irq_check() which will be
called for each port from the ata_sff_interrupt() if an unexpected
interrupt is received.  If the operation returns %true,
->sff_check_status() and ->sff_irq_clear() will be cleared for the
port.  Note that this doesn't mark the interrupt as handled so it
won't prevent IRQ subsystem from killing the IRQ if this mechanism
fails to clear the spurious IRQ.

This patch also implements ->sff_irq_check() for ata_piix.  Note that
this adds slight overhead to shared IRQ operation as IRQs which are
destined for other controllers will trigger extra register accesses to
check whether IDE interrupt is pending but this solves rare screaming
IRQ cases and for some curious reason also helps weird BIOS related
glitch on Samsung n130 as reported in bko#14314.

  http://bugzilla.kernel.org/show_bug.cgi?id=14314

* piix_base_ops dropped as suggested by Sergei.

* Spurious IRQ detection doesn't kick in anymore if polling qc is in
  progress.  This provides less protection but some controllers have
  possible data corruption issues if the wrong register is accessed
  while a command is in progress.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Johannes Stezenbach <js@sig21.net>
Reported-by: Hans Werner <hwerner4@gmx.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-03-01 14:58:44 -05:00
Linus Torvalds
8724fdb53d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (62 commits)
  Input: atkbd - release previously reserved keycodes 248 - 254
  Input: add KEY_WPS_BUTTON definition
  Input: ads7846 - add regulator support
  Input: winbond-cir - fix suspend/resume
  Input: gamecon - use pr_err() and friends
  Input: gamecon - constify some of the setup structures
  Input: gamecon - simplify pad type handling
  Input: gamecon - simplify coordinate calculation for PSX
  Input: gamecon - fix some formatting issues
  Input: gamecon - add rumble support for N64 pads
  Input: wacom - add device type to device name string
  Input: s3c24xx_ts - report touch only when stylus is down
  Input: s3c24xx_ts - re-enable IRQ on resume
  Input: wacom - constify product features data
  Input: wacom - use per-device instance of wacom_features
  Input: sh_keysc - enable building on SH-Mobile ARM
  Input: wacom - get features from driver info
  Input: rotary-encoder - set gpio direction for each requested gpio
  Input: sh_keysc - update the driver with mode 6
  Input: sh_keysc - switch to using bitmaps
  ...
2010-03-01 10:38:09 -08:00
Linus Torvalds
bc53515413 Merge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: replace acpi_integer by u64
  ACPICA: Update version to 20100121.
  ACPICA: Remove unused uint32_struct type
  ACPICA: Disassembler: Remove obsolete "Integer64" field in parse object
  ACPICA: Remove obsolete ACPI_INTEGER (acpi_integer) type
  ACPICA: Predefined name repair: fix NULL package elements
  ACPICA: AcpiGetDevices: Eliminate unnecessary _STA calls
  ACPICA: Update all ACPICA copyrights and signons to 2010
  ACPICA: Update for new gcc-4 warning options
2010-03-01 10:36:22 -08:00
Linus Torvalds
ac0f6f927d Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
  ARM: Eliminate decompressor -Dstatic= PIC hack
  ARM: 5958/1: ARM: U300: fix inverted clk round rate
  ARM: 5956/1: misplaced parentheses
  ARM: 5955/1: ep93xx: move timer defines into core.c and document
  ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
  ARM: 5953/1: ep93xx: fix broken build of clock.c
  ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
  ARM: 5949/1: NUC900 add gpio virtual memory map
  ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
  ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
  ARM: make_coherent(): fix problems with highpte, part 2
  MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
  ARM: 5945/1: ep93xx: include correct irq.h in core.c
  ARM: 5933/1: amba-pl011: support hardware flow control
  ARM: 5930/1: Add PKMAP area description to memory.txt.
  ARM: 5929/1: Add checks to detect overlap of memory regions.
  ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
  ARM: 5927/1: Make delimiters of DMA area globally visibly.
  ARM: 5926/1: Add "Virtual kernel memory..." printout.
  ARM: 5920/1: OMAP4: Enable L2 Cache
  ...

Fix up trivial conflict in arch/arm/mach-mx25/clock.c
2010-03-01 09:15:15 -08:00
Linus Torvalds
b1bf936840 Merge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block: (38 commits)
  block: don't access jiffies when initialising io_context
  cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
  block: fix for "Consolidate phys_segment and hw_segment limits"
  cfq-iosched: quantum check tweak
  blktrace: perform cleanup after setup error
  blkdev: fix merge_bvec_fn return value checks
  cfq-iosched: requests "in flight" vs "in driver" clarification
  cciss: Fix problem with scatter gather elements in the scsi half of the driver
  cciss: eliminate unnecessary pointer use in cciss scsi code
  cciss: do not use void pointer for scsi hba data
  cciss: factor out scatter gather chain block mapping code
  cciss: fix scatter gather chain block dma direction kludge
  cciss: simplify scatter gather code
  cciss: factor out scatter gather chain block allocation and freeing
  cciss: detect bad alignment of scsi commands at build time
  cciss: clarify command list padding calculation
  cfq-iosched: rethink seeky detection for SSDs
  cfq-iosched: rework seeky detection
  block: remove padding from io_context on 64bit builds
  block: Consolidate phys_segment and hw_segment limits
  ...
2010-03-01 09:00:29 -08:00
Linus Torvalds
524df55725 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (252 commits)
  ASoC: Check progress when reporting periods from i.MX FIQ handler
  ASoC: Remove a unused variables from i.MX FIQ runtime data
  ALSA: hda - Add/fix ALC269 FSC and Quanta models
  ALSA: hda - Add ALC670 codec support
  OMAP4: PMIC: Add support for twl6030 codec
  ALSA: hda - remove unnecessary msleep on power state transitions
  usb/gadget/{f_audio,gmidi}.c: follow recent changes in audio.h
  ASoC: fsi: Modify over/under run error settlement
  ASoC: OMAP4: Add McPDM platform driver
  ASoC: OMAP4: Add support for McPDM
  ASoC: OMAP: data_type and sync_mode configurable in audio dma
  ALSA: hda - Add missing description in HD-Audio-Models.txt
  ALSA: add support for Macbook Air 2,1 internal speaker
  ALSA: usbaudio: consolidate header files
  ALSA: usbmixer: bail out early when parsing audio class v2 descriptors
  ALSA: usbaudio: implement basic set of class v2.0 parser
  ALSA: usbaudio: introduce new types for audio class v2
  ALSA: usbaudio: parse USB descriptors with structs
  ALSA: hda - enable snoop for Intel Cougar Point
  ALSA: hda - Remove identical definitions for macmini3 model
  ...
2010-03-01 08:58:44 -08:00
Linus Torvalds
0f45339794 Merge branches 'futexes-for-linus', 'irq-core-for-linus' and 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Protect pid lookup in compat code with RCU

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Fix documentation of default chip disable()

* 'bkl-drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  nvram: Drop the BKL from nvram_open()
2010-03-01 08:51:52 -08:00
Linus Torvalds
e56425b135 Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  posix-timers.c: Don't export local functions
  clocksource: start CMT at clocksource resume
  clocksource: add suspend callback
  clocksource: add argument to resume callback
  ntp: Cleanup xtime references in ntp.c
  ntp: Make time_esterror and time_maxerror static
2010-03-01 08:48:25 -08:00
Jan Kiszka
d2be1651b7 KVM: x86: Add KVM_CAP_X86_ROBUST_SINGLESTEP
This marks the guest single-step API improvement of 94fe45da and
91586a3b with a capability flag to allow reliable detection by user
space.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: stable@kernel.org (2.6.33)
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:14 -03:00
Avi Kivity
70e335e168 KVM: Convert kvm->requests_lock to raw_spinlock_t
The code relies on kvm->requests_lock inhibiting preemption.

Noted by Jan Kiszka.

Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:13 -03:00
Avi Kivity
90bb6fc556 KVM: MMU: Add tracepoint for guest page aging
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:09 -03:00
Joerg Roedel
8f0b1ab6fb KVM: Introduce kvm_host_page_size
This patch introduces a generic function to find out the
host page size for a given gfn. This function is needed by
the kvm iommu code. This patch also simplifies the x86
host_mapping_level function.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:08 -03:00
Zhai, Edwin
ab9f4ecbb6 KVM: enable PCI multiple-segments for pass-through device
Enable optional parameter (default 0) - PCI segment (or domain) besides
BDF, when assigning PCI device to guest.

Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01 12:36:06 -03:00
Avi Kivity
0c04851c0c KVM: trace guest fpu loads and unloads
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01 12:36:05 -03:00
Gleb Natapov
c25bc1638a KVM: Implement NotifyLongSpinWait HYPER-V hypercall
Windows issues this hypercall after guest was spinning on a spinlock
for too many iterations.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:00 -03:00
Gleb Natapov
10388a0716 KVM: Add HYPER-V apic access MSRs
Implement HYPER-V apic MSRs. Spec defines three MSRs that speed-up
access to EOI/TPR/ICR apic registers for PV guests.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Vadim Rozenfeld <vrozenfe@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-03-01 12:36:00 -03:00