platform/kernel/linux-rpi.git
14 years agoUSB: cxacru: check data length is not negative
Simon Arlott [Sat, 21 Nov 2009 15:07:14 +0000 (15:07 +0000)]
USB: cxacru: check data length is not negative

When attempting to read data that is not actually
an array of values, the length may be negative
which causes an Oops due to a likely access off
the end of the data array.

This bug should not occur under normal use unless
the device returns an invalid response.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: cxacru: return an empty value for modulation if there is no connection
Simon Arlott [Sat, 21 Nov 2009 15:03:23 +0000 (15:03 +0000)]
USB: cxacru: return an empty value for modulation if there is no connection

When there is no connection, return an empty string
instead of "0" for the connection modulation.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: MXC: add platform resources for i.MX21 USB host controller.
Martin Fuzzey [Sat, 21 Nov 2009 11:14:58 +0000 (12:14 +0100)]
USB: MXC: add platform resources for i.MX21 USB host controller.

Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: MXC: use DMA_BIT_MASK macro rather than hardcoded constants.
Martin Fuzzey [Sat, 21 Nov 2009 11:14:54 +0000 (12:14 +0100)]
USB: MXC: use DMA_BIT_MASK macro rather than hardcoded constants.

Also fixes tab/space issue causing checkpatch to complain.

Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: MXC: Add i.MX21 specific USB host controller driver.
Martin Fuzzey [Sat, 21 Nov 2009 11:14:48 +0000 (12:14 +0100)]
USB: MXC: Add i.MX21 specific USB host controller driver.

This driver is a Full / Low speed only USB host for the i.MX21.

Signed-off-by: Martin Fuzzey <mfuzzey@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoMerge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 1 Mar 2010 21:05:40 +0000 (13:05 -0800)]
Merge branch 'davinci-for-linus' of git://git./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.
  ...

14 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Mon, 1 Mar 2010 21:04:58 +0000 (13:04 -0800)]
Merge branch 'upstream-linus' of git://git./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
  ...

14 years agosata_via: Delay on vt6420 when starting ATAPI DMA write
Bart Hartgers [Sun, 14 Feb 2010 12:04:50 +0000 (13:04 +0100)]
sata_via: Delay on vt6420 when starting ATAPI DMA write

When writing a disc on certain lite-on dvd-writers (also rebadged
as optiarc/LG/...) connected to a vt6420, the ATAPI CDB ends
up in the datastream and on the disc, causing silent corruption.
Delaying between sending the CDB and starting DMA seems to
prevent this.

I do not know if there are burners that do not suffer from
this, but the patch should be safe for those as well.

There are many reports of this issue, but AFAICT no solution was
found before. For example:
http://lkml.indiana.edu/hypermail/linux/kernel/0802.3/0561.html

Signed-off-by: Bart Hartgers <bart.hartgers@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoata: Detect Delkin Devices compact flash
Ben Gardner [Tue, 23 Feb 2010 18:41:22 +0000 (12:41 -0600)]
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>
14 years agopata_efar: Enable parallel scanning
Alan Cox [Wed, 17 Feb 2010 13:17:52 +0000 (13:17 +0000)]
pata_efar: Enable parallel scanning

Again originally proposed by Bartlomiej but this does it by using the
generic helper logic instead.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_atiixp: enable parallel scan
Alan Cox [Wed, 17 Feb 2010 13:17:44 +0000 (13:17 +0000)]
pata_atiixp: enable parallel scan

This was originally proposed by Bartlomiej but as a device specific
expansion of the init_one function rather than making the helper more
generic.

Enable the parallel scan via the generic flags.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years ago[libata] pata_atiixp: add locking for parallel scanning
Bartlomiej Zolnierkiewicz [Wed, 17 Feb 2010 13:17:31 +0000 (13:17 +0000)]
[libata] pata_atiixp: add locking for parallel scanning

This is similar change as commit 60c3be3 for ata_piix host driver
and while pata_atiixp doesn't enable parallel scan yet the race
could probably also be triggered by requesting re-scanning of both
ports at the same time using SCSI sysfs interface.

[Ported to current tree without other patch dependancies by Alan Cox]

Original is
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This one is
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years ago[libata] pata_efar: add locking for parallel scanning
Bartlomiej Zolnierkiewicz [Wed, 17 Feb 2010 13:16:58 +0000 (13:16 +0000)]
[libata] pata_efar: add locking for parallel scanning

Add clearing of UDMA enable bit also for PIO modes and then add
extra locking for parallel scanning.

This is similar change as commit 60c3be3 for ata_piix host driver
and while pata_efar doesn't enable parallel scan yet the race could
probably also be triggered by requesting re-scanning of both ports
at the same time using SCSI sysfs interface.

[Ported to current kernel without other patch dependancies by
 Alan Cox]

Original is
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This one is
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: Pass host flags into the pci helper
Alan Cox [Tue, 23 Feb 2010 07:26:06 +0000 (02:26 -0500)]
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>
14 years ago[libata] pata_marvell: CONFIG_AHCI is really CONFIG_SATA_AHCI
Christoph Egger [Fri, 5 Feb 2010 15:26:35 +0000 (16:26 +0100)]
[libata] pata_marvell: CONFIG_AHCI is really CONFIG_SATA_AHCI

The marvell driver comtains a fallback to ahci for the sata ports
which is incorrectly checked as CONFIG_AHCI while the only AHCI config
item is actually called SATA_AHCI (which also sounds sensible
considering it's a fallback for the sata ports).

Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: Allow pata_legacy to be built on non-ISA but PCI systems
Alan Cox [Mon, 8 Feb 2010 10:04:54 +0000 (10:04 +0000)]
libata: Allow pata_legacy to be built on non-ISA but PCI systems

This is needed for some unsupported hardware setups on strange 64bit
mainboards where crazy stuff has been done like putting flash ata adapters
on the LPC bus, or where the real hardware is hidden/confused.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_pdc202xx_old: fix UDMA mode for PDC2026x chipsets
Bartlomiej Zolnierkiewicz [Sat, 13 Feb 2010 22:43:17 +0000 (17:43 -0500)]
pata_pdc202xx_old: fix UDMA mode for PDC2026x chipsets

PDC2026x chipsets need the same treatment as PDC20246 one.

This is completely untested but will hopefully fix UDMA issues
that people have been reporting against pata_pdc202xx_old for
the last couple of years.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_pdc202xx_old: fix UDMA mode for Promise UDMA33 cards
Bartlomiej Zolnierkiewicz [Sat, 13 Feb 2010 13:35:53 +0000 (14:35 +0100)]
pata_pdc202xx_old: fix UDMA mode for Promise UDMA33 cards

On Monday 04 January 2010 02:30:24 pm Russell King wrote:

> Found the problem - getting rid of the read of the alt status register
> after the command has been written fixes the UDMA CRC errors on write:
>
> @@ -676,7 +676,8 @@ void ata_sff_exec_command(struct ata_port *ap, const struct
> ata_taskfile *tf)
>         DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);
>
>         iowrite8(tf->command, ap->ioaddr.command_addr);
> -       ata_sff_pause(ap);
> +       ndelay(400);
> +//     ata_sff_pause(ap);
>  }
>  EXPORT_SYMBOL_GPL(ata_sff_exec_command);
>
>
> This rather makes sense.  The PDC20247 handles the UDMA part of the
> protocol.  It has no way to tell the PDC20246 to wait while it suspends
> UDMA, so that a normal register access can take place - the 246 ploughs
> on with the register access without any regard to the state of the 247.
>
> If the drive immediately starts the UDMA protocol after a write to the
> command register (as it probably will for the DMA WRITE command), then
> we'll be accessing the taskfile in the middle of the UDMA setup, which
> can't be good.  It's certainly a violation of the ATA specs.

Fix it by adding custom ->sff_exec_command method for UDMA33 chipsets.

Debugged-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years ago[libata] pata_at91: fix backslash-continued string
Jeff Garzik [Thu, 4 Feb 2010 06:09:54 +0000 (01:09 -0500)]
[libata] pata_at91: fix backslash-continued string

Noticed and rough patch by Joe Perches.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_via: store UDMA masks in via_isa_bridges table
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:17:12 +0000 (18:17 +0100)]
pata_via: store UDMA masks in via_isa_bridges table

* store UDMA masks in via_isa_bridges[] and while at it make "flags"
  field to be u8 instead of u16

* convert the driver to use UDMA masks from via_isa_bridges[]

* remove no longer needed VIA_UDMA* defines

Make some minor documentation and CodingStyle fixes while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_via: fix address setup timings underlocking
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:17:03 +0000 (18:17 +0100)]
pata_via: fix address setup timings underlocking

Correct via_do_set_mode() documentation while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_serverworks: fix error message
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:16:46 +0000 (18:16 +0100)]
pata_serverworks: fix error message

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_serverworks: fix PIO setup for the second channel
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:16:38 +0000 (18:16 +0100)]
pata_serverworks: fix PIO setup for the second channel

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_efar: fix secondary port support
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:16:03 +0000 (18:16 +0100)]
pata_efar: fix secondary port support

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cypress: fix PIO timings underclocking
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:15:47 +0000 (18:15 +0100)]
pata_cypress: fix PIO timings underclocking

Timing registers should be programmed with the desired number of clocks
minus one clock.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cs5535: use correct values for PIO1 and PIO2 data timings
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:15:38 +0000 (18:15 +0100)]
pata_cs5535: use correct values for PIO1 and PIO2 data timings

There shouldn't be any problems with it as IDE cs5535 host driver
has been using those values for years and they match values given
in the (publicly available) datasheet.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cmd64x: remove unused definitions
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:15:18 +0000 (18:15 +0100)]
pata_cmd64x: remove unused definitions

s/ARTIM2/ARTTIM23/ in cmd648_bmdma_stop() while at it

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cmd64x: cmd648_bmdma_stop() fix
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:15:11 +0000 (18:15 +0100)]
pata_cmd64x: cmd648_bmdma_stop() fix

Clear the primary channel pending interrupt bit
instead of the reserved one.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cmd64x: fix handling of address setup timings
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:15:04 +0000 (18:15 +0100)]
pata_cmd64x: fix handling of address setup timings

Account for the requirements of the DMA mode currently used
by the pair device.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_cmd64x: fix PIO setup
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:14:55 +0000 (18:14 +0100)]
pata_cmd64x: fix PIO setup

Fix incorrect handling of recovery clocks value == 16 resulting
in overclocked recovery timings & potentially underclocked active
timings.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_ali: documentation fixes
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:14:05 +0000 (18:14 +0100)]
pata_ali: documentation fixes

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: fix CFA handling in ide_timing_compute()
Bartlomiej Zolnierkiewicz [Mon, 18 Jan 2010 17:13:57 +0000 (18:13 +0100)]
libata: fix CFA handling in ide_timing_compute()

Use standard cycle timing for CFA PIO5 and PIO6 modes.

Based on commit 74638c8 for IDE subsystem.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agosata_via: Correctly setup PIO/DMA for pata slave on vt6421.
Bart Hartgers [Sat, 16 Jan 2010 23:56:54 +0000 (00:56 +0100)]
sata_via: Correctly setup PIO/DMA for pata slave on vt6421.

Before only the timings for master were set. Datasheet can be found
here: ftp://ftp.vtbridge.org/Docs/Storage/DS_VT6421A_100_CCPL.PDF
Surprisingly, a slave drive works without this patch. According to the
datasheet, the controller by default derives the DMA mode from the
Set Features command issued to a drive. Not sure about the PIO
timings, though. The real problem is that the timings for the master
effectively are the ones tuned for the slave. If these support
different UDMA-settings, there is trouble, especially when the slave
supports a higher UDMA than the master.

Anyhow, using the same mechanism for both master and slave seems like
a good idea.

Signed-off-by: Bart Hartgers <bart.hartgers@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: make functions/variables static
Robert Hancock [Wed, 20 Jan 2010 05:03:39 +0000 (23:03 -0600)]
libata: make functions/variables static

Make some variables in ahci and a function in pata_pcmcia static, as found
using sparse.

Signed-off-by: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: implement spurious irq handling for SFF and apply it to piix
Tejun Heo [Tue, 19 Jan 2010 01:49:19 +0000 (10:49 +0900)]
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>
14 years agolibata: cleanup ata_sff_interrupt()
Tejun Heo [Tue, 19 Jan 2010 01:46:32 +0000 (10:46 +0900)]
libata: cleanup ata_sff_interrupt()

host->ports[i] is never NULL if i < host->n_ports and non-NULL return
from ata_qc_from_tag() guarantees that the returned qc is active.
Drop unnecessary tests.

Superflous () dropped as suggested by Sergei.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoata_piix: IDE Mode SATA patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 01:01:28 +0000 (17:01 -0800)]
ata_piix: IDE Mode SATA patch for Intel Cougar Point DeviceIDs

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 01:00:18 +0000 (17:00 -0800)]
ahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoahci: Implement SATA AHCI FIS-based switching support
Shane Huang [Wed, 9 Dec 2009 09:23:04 +0000 (17:23 +0800)]
ahci: Implement SATA AHCI FIS-based switching support

Tested on AMD internal reference board.

Signed-off-by: Shane Huang <shane.huang@amd.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt366: remove irrelevant TODO
Sergei Shtylyov [Mon, 7 Dec 2009 19:39:38 +0000 (23:39 +0400)]
pata_hpt366: remove irrelevant TODO

HPT36x chips just don't have DPLL.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt{37x|3x2n}: improve timing register documentation
Sergei Shtylyov [Mon, 7 Dec 2009 19:38:11 +0000 (23:38 +0400)]
pata_hpt{37x|3x2n}: improve timing register documentation

Describe UDMA timing bits 18-20 and 21 separately; add a note to bit
31 about it being meaningful for PIO only.  Reformat the whole comment,
while at it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt366: remove redundant code
Sergei Shtylyov [Mon, 7 Dec 2009 19:36:15 +0000 (23:36 +0400)]
pata_hpt366: remove redundant code

There's no need to clear the fast interrupt bit in hpt366_set_mode()
since we're doing it in hpt366_init_chipset() already.

While at it, rename 'addr1' local variable to 'addr' and
exclude 'ap->port_no' from its calculation as HPT36x are
single-channel-per-function chips.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt{37x|3x2n}: unify mode programming
Sergei Shtylyov [Mon, 7 Dec 2009 19:30:06 +0000 (23:30 +0400)]
pata_hpt{37x|3x2n}: unify mode programming

As these drivers' set_piomode() and set_dmamode() methods are almost
identical, factor out the common hpt{37x|3x2n}_set_mode() function
to be called by both of them, the same as in 'pata_hpt366' driver.

This results in ~5% decrease in the 'pata_hpt37x' driver binary
size and in ~4% decrease in the 'pata_hpt3x2n' driver binary size
(as measured on x86-32).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt3x2n: always stretch UltraDMA timing
Sergei Shtylyov [Mon, 7 Dec 2009 19:25:52 +0000 (23:25 +0400)]
pata_hpt3x2n: always stretch UltraDMA timing

The UltraDMA Tss timing must be stretched with ATA clock of 66 MHz, but the
driver only does this when PCI clock is 66 MHz, whereas it always programs
DPLL clock (which is used as the ATA clock) to 66 MHz.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: <stable@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agopata_hpt37x: use ATA_DMA_* constants
Sergei Shtylyov [Fri, 4 Dec 2009 20:37:43 +0000 (00:37 +0400)]
pata_hpt37x: use ATA_DMA_* constants

Use ATA_DMA_* constants instead of the bare numbers for the BMIDE registers.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Mon, 1 Mar 2010 18:38:09 +0000 (10:38 -0800)]
Merge branch 'for-linus' of git://git./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
  ...

14 years agoMerge branch 'acpica' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Mon, 1 Mar 2010 18:36:22 +0000 (10:36 -0800)]
Merge branch 'acpica' of git://git./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

14 years agoDaVinci DM365: Adding support for SPI EEPROM
Sandeep Paulraj [Mon, 1 Feb 2010 14:51:45 +0000 (09:51 -0500)]
DaVinci DM365: Adding support for SPI EEPROM

The DM365 Spectrum Digital EVM comes with an EEPROM
connected to SPI0.
This patch adds support for the SPI EEPROM.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
14 years agoDaVinci DM365: Adding DM365 SPI support
Sandeep Paulraj [Mon, 1 Feb 2010 14:51:31 +0000 (09:51 -0500)]
DaVinci DM365: Adding DM365 SPI support

This patch adds SPI init for DM365.
It does the following
1) Initializes SPI0
2) Defines resources to be used by SPI0
3) Adds platform data for SPI0

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
14 years agoDaVinci DM355: Modifications to DM355 SPI support
Sandeep Paulraj [Mon, 1 Feb 2010 14:51:15 +0000 (09:51 -0500)]
DaVinci DM355: Modifications to DM355 SPI support

This patch does the following

1) Minor change to the SPI clocks making it
similar to DM365.
2) Changing the interrupt used by SPI0
3) Adding EDMA resources that can be used by SPI0
4) Adding platform specific data.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
14 years agoDaVinci: SPI: Adding header file for SPI support.
Sandeep Paulraj [Mon, 1 Feb 2010 14:51:02 +0000 (09:51 -0500)]
DaVinci: SPI: Adding header file for SPI support.

This patch adds "spi.h" header file that will be used by board and
architecture specific code.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
14 years agodavinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup
Kevin Hilman [Mon, 11 Jan 2010 16:22:23 +0000 (08:22 -0800)]
davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup

Remove unneeded 'struct davinci_clk' wrapper around 'struct
clk_lookup' and use clk_lookup directly.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
14 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Mon, 1 Mar 2010 18:14:46 +0000 (10:14 -0800)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] wrong attribute of HUB chip written in uv_setup()
  [IA64] remove trailing space in messages
  [IA64] use asm-generic/scatterlist.h
  [IA64] build arch/ia64/kernel/acpi-ext.o when CONFIG_ACPI
  [IA64] Only build arch/ia64/kernel/acpi.o when CONFIG_ACPI
  [IA64] Remove COMPAT_IA32 support

14 years agoMerge branch 'for-linus' of git://repo.or.cz/cris-mirror
Linus Torvalds [Mon, 1 Mar 2010 18:06:09 +0000 (10:06 -0800)]
Merge branch 'for-linus' of git://repo.or.cz/cris-mirror

* 'for-linus' of git://repo.or.cz/cris-mirror:
  cris: Fixup last users of irq_chip->typename
  CRIS v32: Should index be positive?

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Mon, 1 Mar 2010 17:16:21 +0000 (09:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mst/vhost

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: fix out of range array access

14 years agoMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 1 Mar 2010 17:15:15 +0000 (09:15 -0800)]
Merge branch 'for-linus' of /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

14 years agoMerge branch 'for-2.6.34' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Mon, 1 Mar 2010 17:00:29 +0000 (09:00 -0800)]
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
  ...

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 1 Mar 2010 16:58:44 +0000 (08:58 -0800)]
Merge branch 'for-linus' of git://git./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
  ...

14 years agoMerge branches 'futexes-for-linus', 'irq-core-for-linus' and 'bkl-drivers-for-linus...
Linus Torvalds [Mon, 1 Mar 2010 16:51:52 +0000 (08:51 -0800)]
Merge branches 'futexes-for-linus', 'irq-core-for-linus' and 'bkl-drivers-for-linus' of git://git./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()

14 years agoMerge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 1 Mar 2010 16:48:25 +0000 (08:48 -0800)]
Merge branch 'timers-for-linus' of git://git./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

14 years agoscsi.c: add missing kernel-doc notation for new VPD parameters
Randy Dunlap [Mon, 1 Mar 2010 01:32:45 +0000 (17:32 -0800)]
scsi.c: add missing kernel-doc notation for new VPD parameters

Add missing kernel-doc notation for new function parameters:

Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf'
Warning(drivers/scsi/scsi.c:1031): No description found for parameter 'buf_len'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agopci: don't reassign to ROM res if it is not going to be enabled
Yinghai Lu [Sun, 28 Feb 2010 23:49:39 +0000 (15:49 -0800)]
pci: don't reassign to ROM res if it is not going to be enabled

A ROM resource that doesn't fit should not cause us to try to re-assign
all the bus resources.  Nobody generally cares, and re-assigning is
going to just cause way more troubles than it tries to solve.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'topic/asoc' into for-linus
Takashi Iwai [Mon, 1 Mar 2010 11:38:59 +0000 (12:38 +0100)]
Merge branch 'topic/asoc' into for-linus

14 years agoMerge branch 'topic/hda' into for-linus
Takashi Iwai [Mon, 1 Mar 2010 11:38:54 +0000 (12:38 +0100)]
Merge branch 'topic/hda' into for-linus

14 years agoMerge branch 'topic/misc' into for-linus
Takashi Iwai [Mon, 1 Mar 2010 11:38:49 +0000 (12:38 +0100)]
Merge branch 'topic/misc' into for-linus

14 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Mon, 1 Mar 2010 11:38:39 +0000 (12:38 +0100)]
Merge branch 'fix/misc' into for-linus

14 years agoblock: don't access jiffies when initialising io_context
Richard Kennedy [Mon, 1 Mar 2010 09:57:22 +0000 (10:57 +0100)]
block: don't access jiffies when initialising io_context

As the comment says the initial value of last_waited is never used, so
there is no need to initialise it with the current jiffies. Jiffies is
hot enough without accessing it for no reason.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds
Richard Kennedy [Mon, 1 Mar 2010 09:50:20 +0000 (10:50 +0100)]
cfq: remove 8 bytes of padding from cfq_rb_root on 64 bit builds

Reorder cfq_rb_root to remove 8 bytes of padding on 64 bit builds.

Consequently removing 56 bytes from cfq_group and 64 bytes from
cfq_data.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblock: fix for "Consolidate phys_segment and hw_segment limits"
Stephen Rothwell [Mon, 1 Mar 2010 08:21:01 +0000 (19:21 +1100)]
block: fix for "Consolidate phys_segment and hw_segment limits"

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocfq-iosched: quantum check tweak
Shaohua Li [Mon, 1 Mar 2010 08:20:54 +0000 (09:20 +0100)]
cfq-iosched: quantum check tweak

Currently a queue can only dispatch up to 4 requests if there are other queues.
This isn't optimal, device can handle more requests, for example, AHCI can
handle 31 requests. I can understand the limit is for fairness, but we could
do a tweak: if the queue still has a lot of slice left, sounds we could
ignore the limit. Test shows this boost my workload (two thread randread of
a SSD) from 78m/s to 100m/s.
Thanks for suggestions from Corrado and Vivek for the patch.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branch 'next' into for-linus
Dmitry Torokhov [Mon, 1 Mar 2010 07:55:20 +0000 (23:55 -0800)]
Merge branch 'next' into for-linus

14 years agoMerge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 19:00:55 +0000 (11:00 -0800)]
Merge branch 'x86-uv-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, uv: Remove recursion in uv_heartbeat_enable()
  x86, uv: uv_global_gru_mmr_address() macro fix
  x86, uv: Add serial number parameter to uv_bios_get_sn_info()

14 years agoMerge branch 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:59:44 +0000 (10:59 -0800)]
Merge branch 'x86-ptrace-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-ptrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, ptrace: Remove set_stopped_child_used_math() in [x]fpregs_set
  x86, ptrace: Simplify xstateregs_get()
  ptrace: Fix ptrace_regset() comments and diagnose errors specifically
  parisc: Disable CONFIG_HAVE_ARCH_TRACEHOOK
  ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET
  x86, ptrace: regset extensions to support xstate

14 years agoMerge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:59:18 +0000 (10:59 -0800)]
Merge branch 'x86-pci-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Enable NMI on all cpus on UV
  vgaarb: Add user selectability of the number of GPUS in a system
  vgaarb: Fix VGA arbiter to accept PCI domains other than 0
  x86, uv: Update UV arch to target Legacy VGA I/O correctly.
  pci: Update pci_set_vga_state() to call arch functions

14 years agoblktrace: perform cleanup after setup error
Dmitry Monakhov [Sat, 27 Feb 2010 17:35:13 +0000 (20:35 +0300)]
blktrace: perform cleanup after setup error

Currently even if BLKTRACESETUP ioctl has failed user must call
BLKTRACETEARDOWN to be shure what all staff was cleaned, which
is contr-intuitive.
Let's setup ioctl make necessery cleanup by it self.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoblkdev: fix merge_bvec_fn return value checks
Dmitry Monakhov [Sat, 27 Feb 2010 17:35:12 +0000 (20:35 +0300)]
blkdev: fix merge_bvec_fn return value checks

merge_bvec_fn() returns bvec->bv_len on success. So we have to check
against this value. But in case of fs_optimization merge we compare
with wrong value. This patch must be included in
 b428cd6da7e6559aca69aa2e3a526037d3f20403
But accidentally i've forgot to add this in the initial patch.
To make things straight let's replace all such checks.
In fact this makes code easy to understand.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocfq-iosched: requests "in flight" vs "in driver" clarification
Corrado Zoccolo [Sun, 28 Feb 2010 18:45:05 +0000 (19:45 +0100)]
cfq-iosched: requests "in flight" vs "in driver" clarification

Counters for requests "in flight" and "in driver" are used asymmetrically
in cfq_may_dispatch, and have slightly different meaning.
We split the rq_in_flight counter (was sync_flight) to count both sync
and async requests, in order to use this one, which is more accurate in
some corner cases.
The rq_in_driver counter is coalesced, since individual sync/async counts
are not used any more.

Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:43:53 +0000 (10:43 -0800)]
Merge branch 'x86-setup-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, setup: Don't skip mode setting for the standard VGA modes
  x86-64, setup: Inhibit decompressor output if video info is invalid
  x86, setup: When restoring the screen, update boot_params.screen_info

14 years agocciss: Fix problem with scatter gather elements in the scsi half of the driver
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:53 +0000 (16:01 -0600)]
cciss: Fix problem with scatter gather elements in the scsi half of the driver

cciss: Fix problem with scatter gather elements in the scsi half of the driver
When support for more than 31 scatter gather elements was added to the block
half of the driver, the SCSI half of the driver was not addressed, and the bump
from 31 to 32 scatter gather elements in the command block itself (not chained)
actually broke the SCSI half of the driver, so that any transfer requiring 32
scatter gather elements wouldn't work.  This fix also increases the max transfer
size and size of the scatter gather table to the limit supported by the controller

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: eliminate unnecessary pointer use in cciss scsi code
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:47 +0000 (16:01 -0600)]
cciss: eliminate unnecessary pointer use in cciss scsi code

cciss: eliminate unnecessary pointer use in cciss scsi code
An extra level of indirection was being used in some places
for no real reason.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: do not use void pointer for scsi hba data
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:42 +0000 (16:01 -0600)]
cciss: do not use void pointer for scsi hba data

cciss: do not use void pointer for scsi hba data
and get rid of related unnecessary type casting
and delete some superfluous and misleading comments nearby.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: factor out scatter gather chain block mapping code
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:37 +0000 (16:01 -0600)]
cciss: factor out scatter gather chain block mapping code

cciss: factor out scatter gather chain block mapping code
Rationale is I want to use this code from the scsi half of the
driver.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: fix scatter gather chain block dma direction kludge
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:32 +0000 (16:01 -0600)]
cciss: fix scatter gather chain block dma direction kludge

cciss: fix scatter gather chain block dma direction kludge
The data direction for the chained block of scatter gather
elements should always be PCI_DMA_TODEVICE, but was mistakenly
set to the direction of the data transfer, then a kludge to
fix it was added, in which pci_dma_sync_single_for_device or
pci_dma_sync_single_for_cpu was called.  If the correct direction
is used in the first place, the kludge isn't needed.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: simplify scatter gather code
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:27 +0000 (16:01 -0600)]
cciss: simplify scatter gather code

cciss: simplify scatter gather code.
Instead of allocating an array of pointers to a structure
containing an SGDescriptor structure, and two other elements
that aren't really used, just allocate SGDescriptor structs.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: factor out scatter gather chain block allocation and freeing
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:22 +0000 (16:01 -0600)]
cciss: factor out scatter gather chain block allocation and freeing

cciss: factor out scatter gather chain block allocation and freeing
Rationale is that I want to use this code from the scsi half of the
driver.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: detect bad alignment of scsi commands at build time
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:17 +0000 (16:01 -0600)]
cciss: detect bad alignment of scsi commands at build time

cciss: detect bad alignment of scsi commands at build time
Incidentally fix some nearby c++ style comments.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocciss: clarify command list padding calculation
Stephen M. Cameron [Fri, 26 Feb 2010 22:01:12 +0000 (16:01 -0600)]
cciss: clarify command list padding calculation

cciss: clarify command list padding calculation

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branch 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:41:35 +0000 (10:41 -0800)]
Merge branch 'x86-rwsem-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-64, rwsem: Avoid store forwarding hazard in __downgrade_write
  x86-64, rwsem: 64-bit xadd rwsem implementation
  x86: Fix breakage of UML from the changes in the rwsem system
  x86-64: support native xadd rwsem implementation
  x86: clean up rwsem type system

14 years agocfq-iosched: rethink seeky detection for SSDs
Corrado Zoccolo [Sat, 27 Feb 2010 18:45:40 +0000 (19:45 +0100)]
cfq-iosched: rethink seeky detection for SSDs

CFQ currently applies the same logic of detecting seeky queues and
grouping them together for rotational disks as well as SSDs.
For SSDs, the time to complete a request doesn't depend on the
request location, but only on the size.
This patch therefore changes the criterion to group queues by
request size in case of SSDs, in order to achieve better fairness.

Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agocfq-iosched: rework seeky detection
Corrado Zoccolo [Sat, 27 Feb 2010 18:45:39 +0000 (19:45 +0100)]
cfq-iosched: rework seeky detection

Current seeky detection is based on average seek lenght.
This is suboptimal, since the average will not distinguish between:
* a process doing medium sized seeks
* a process doing some sequential requests interleaved with larger seeks
and even a medium seek can take lot of time, if the requested sector
happens to be behind the disk head in the rotation (50% probability).

Therefore, we change the seeky queue detection to work as follows:
* each request can be classified as sequential if it is very close to
  the current head position, i.e. it is likely in the disk cache (disks
  usually read more data than requested, and put it in cache for
  subsequent reads). Otherwise, the request is classified as seeky.
* an history window of the last 32 requests is kept, storing the
  classification result.
* A queue is marked as seeky if more than 1/8 of the last 32 requests
  were seeky.

This patch fixes a regression reported by Yanmin, on mmap 64k random
reads.

Reported-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
14 years agoMerge branch 'for-2.6.34-next' into for-2.6.34
Jens Axboe [Sun, 28 Feb 2010 18:41:12 +0000 (19:41 +0100)]
Merge branch 'for-2.6.34-next' into for-2.6.34

14 years agoMerge branch 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:39:36 +0000 (10:39 -0800)]
Merge branch 'x86-numa-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-numa-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, numa: Remove configurable node size support for numa emulation
  x86, numa: Add fixed node size option for numa emulation
  x86, numa: Fix numa emulation calculation of big nodes
  x86, acpi: Map hotadded cpu to correct node.

14 years agoMerge branch 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:39:16 +0000 (10:39 -0800)]
Merge branch 'x86-mtrr-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-mtrr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Convert set_atomicity_lock to raw_spinlock
  x86, mtrr: Kill over the top warn
  x86, mtrr: Constify struct mtrr_ops

14 years agovirtio: fix out of range array access
Michael S. Tsirkin [Thu, 25 Feb 2010 17:08:55 +0000 (19:08 +0200)]
virtio: fix out of range array access

I have observed the following error on virtio-net module unload:

------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:858 __free_irq+0xa0/0x14c()
Hardware name: Bochs
Trying to free already-free IRQ 0
Modules linked in: virtio_net(-) virtio_blk virtio_pci virtio_ring
virtio af_packet e1000 shpchp aacraid uhci_hcd ohci_hcd ehci_hcd [last
unloaded: scsi_wait_scan]
Pid: 1957, comm: rmmod Not tainted 2.6.33-rc8-vhost #24
Call Trace:
 [<ffffffff8103e195>] warn_slowpath_common+0x7c/0x94
 [<ffffffff8103e204>] warn_slowpath_fmt+0x41/0x43
 [<ffffffff810a7a36>] ? __free_pages+0x5a/0x70
 [<ffffffff8107cc00>] __free_irq+0xa0/0x14c
 [<ffffffff8107cceb>] free_irq+0x3f/0x65
 [<ffffffffa0081424>] vp_del_vqs+0x81/0xb1 [virtio_pci]
 [<ffffffffa0091d29>] virtnet_remove+0xda/0x10b [virtio_net]
 [<ffffffffa0075200>] virtio_dev_remove+0x22/0x4a [virtio]
 [<ffffffff812709ee>] __device_release_driver+0x66/0xac
 [<ffffffff81270ab7>] driver_detach+0x83/0xa9
 [<ffffffff8126fc66>] bus_remove_driver+0x91/0xb4
 [<ffffffff81270fcf>] driver_unregister+0x6c/0x74
 [<ffffffffa0075418>] unregister_virtio_driver+0xe/0x10 [virtio]
 [<ffffffffa0091c4d>] fini+0x15/0x17 [virtio_net]
 [<ffffffff8106997b>] sys_delete_module+0x1c3/0x230
 [<ffffffff81007465>] ? old_ich_force_enable_hpet+0x117/0x164
 [<ffffffff813bb720>] ? do_page_fault+0x29c/0x2cc
 [<ffffffff81028e58>] sysenter_dispatch+0x7/0x27
---[ end trace 15e88e4c576cc62b ]---

The bug is in virtio-pci: we use msix_vector as array index to get irq
entry, but some vqs do not have a dedicated vector so this causes an out
of bounds access.  By chance, we seem to often get 0 value, which
results in this error.

Fix by verifying that vector is legal before using it as index.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Shirley Ma <xma@us.ibm.com>
Acked-by: Amit Shah <amit.shah@redhat.com>
14 years agoMerge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:38:45 +0000 (10:38 -0800)]
Merge branch 'x86-mm-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mm: Unify kernel_physical_mapping_init() API
  x86, mm: Allow highmem user page tables to be disabled at boot time
  x86: Do not reserve brk for DMI if it's not going to be used
  x86: Convert tlbstate_lock to raw_spinlock
  x86: Use the generic page_is_ram()
  x86: Remove BIOS data range from e820
  Move page_is_ram() declaration to mm.h
  Generic page_is_ram: use __weak
  resources: introduce generic page_is_ram()

14 years agoMerge branch 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:37:40 +0000 (10:37 -0800)]
Merge branch 'x86-io-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-io-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Merge io.h
  x86: Simplify flush_write_buffers()
  x86: Clean up mem*io functions.
  x86-64: Use BUILDIO in io_64.h
  x86-64: Reorganize io_64.h
  x86-32: Remove _local variants of in/out from io_32.h
  x86-32: Move XQUAD definitions to numaq.h

14 years agoMerge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:37:06 +0000 (10:37 -0800)]
Merge branch 'x86-cpu-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, cacheinfo: Enable L3 CID only on AMD
  x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1
  x86, cpu: Print AMD virtualization features in /proc/cpuinfo
  x86, cacheinfo: Calculate L3 indices
  x86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches
  x86, cacheinfo: Fix disabling of L3 cache indices
  intel-agp: Switch to wbinvd_on_all_cpus
  x86, lib: Add wbinvd smp helpers

14 years agoMerge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:36:48 +0000 (10:36 -0800)]
Merge branch 'x86-cleanups-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Remove trailing spaces in messages
  x86, mtrr: Remove unused mtrr/state.c
  x86, trivial: Fix grammo in tsc comment about Geode TSC reliability

14 years agoMerge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 28 Feb 2010 18:35:09 +0000 (10:35 -0800)]
Merge branch 'x86-asm-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Mark atomic irq ops raw for 32bit legacy
  x86: Merge show_regs()
  x86: Macroise x86 cache descriptors
  x86-32: clean up rwsem inline asm statements
  x86: Merge asm/atomic_{32,64}.h
  x86: Sync asm/atomic_32.h and asm/atomic_64.h
  x86: Split atomic64_t functions into seperate headers
  x86-64: Modify memcpy()/memset() alternatives mechanism
  x86-64: Modify copy_user_generic() alternatives mechanism
  x86: Lift restriction on the location of FIX_BTMAP_*
  x86, core: Optimize hweight32()

14 years agoMerge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Feb 2010 18:31:01 +0000 (10:31 -0800)]
Merge branch 'sched-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (25 commits)
  sched: Fix SCHED_MC regression caused by change in sched cpu_power
  sched: Don't use possibly stale sched_class
  kthread, sched: Remove reference to kthread_create_on_cpu
  sched: cpuacct: Use bigger percpu counter batch values for stats counters
  percpu_counter: Make __percpu_counter_add an inline function on UP
  sched: Remove member rt_se from struct rt_rq
  sched: Change usage of rt_rq->rt_se to rt_rq->tg->rt_se[cpu]
  sched: Remove unused update_shares_locked()
  sched: Use for_each_bit
  sched: Queue a deboosted task to the head of the RT prio queue
  sched: Implement head queueing for sched_rt
  sched: Extend enqueue_task to allow head queueing
  sched: Remove USER_SCHED
  sched: Fix the place where group powers are updated
  sched: Assume *balance is valid
  sched: Remove load_balance_newidle()
  sched: Unify load_balance{,_newidle}()
  sched: Add a lock break for PREEMPT=y
  sched: Remove from fwd decls
  sched: Remove rq_iterator from move_one_task
  ...

Fix up trivial conflicts in kernel/sched.c