Commit Graph

287172 Commits

Author SHA1 Message Date
Nicolas Ferre
11a25ea7e4 Merge remote-tracking branch 'armsoc/at91/9x5' into at91-3.4-base2 2012-02-11 14:33:03 +01:00
Nicolas Ferre
9acacb13b0 Merge remote-tracking branch 'armsoc/at91/device-board' into at91-3.4-base2 2012-02-11 14:32:50 +01:00
Olof Johansson
76e805769c Merge branch 'at91-3.4-base+9x5' of git://github.com/at91linux/linux-at91 into at91/9x5
* 'at91-3.4-base+9x5' of git://github.com/at91linux/linux-at91:
  ARM: at91/at91sam9x5: Device tree definition files
  ARM: at91/at91sam9x5: SoC basic support
  ARM: at91/at91sam9x5: Configuration and Makefile
  ARM: at91/at91sam9x5: clock management for at91sam9x5 chip family
  ARM: at91/at91sam9x5: PMC header file
  ARM: at91/at91sam9x5: overall definition
2012-02-07 15:12:58 -08:00
Olof Johansson
018b5e1625 Merge branch 'at91-3.4-base+pm_cleanup' of git://github.com/at91linux/linux-at91 into at91/pm_cleanup
* 'at91-3.4-base+pm_cleanup' of git://github.com/at91linux/linux-at91:
  ARM: at91: implement the standby function for pm/cpuidle
  ARM: at91: remove wait_for_interrupt definition
  ARM: at91: declare header name
  ARM: at91: coding style fixes
2012-02-07 15:12:42 -08:00
Olof Johansson
92b0b639a5 Merge branch 'at91-3.4-base+device_board' of git://github.com/at91linux/linux-at91 into at91/device-board
* 'at91-3.4-base+device_board' of git://github.com/at91linux/linux-at91:
  ARM: at91: Add external RTC for Flexibity board
  ARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board
  ARM: at91: add clock selection parameter for at91_add_device_isi()
  ARM: at91: Update struct atmel_nand_data to support PMECC
  ARM: at91/dma: DMA controller registering with DT support
  ARM: at91/dma: remove platform data from DMA controller
2012-02-07 15:12:24 -08:00
Olof Johansson
684852315d Merge branch 'at91-3.4-base' of git://github.com/at91linux/linux-at91 into at91/base
* 'at91-3.4-base' of git://github.com/at91linux/linux-at91:
  ARM: at91: code removal of CAP9 SoC

Conflicts:
	arch/arm/mach-at91/at91cap9.c
2012-02-07 15:11:31 -08:00
Olof Johansson
a5f17d1f4c Linux 3.3-rc2
.. several days delayed. No reason, I just didn't think of it.
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Merge tag 'v3.3-rc2' into depends/rmk/for-armsoc

There were conflicts between fixes going in after 3.3-rc1 and
Russell's stable arm-soc base branch. Resolving it in the dependency
branch so that each topic branch shares the same resolution.

Conflicts:
	arch/arm/mach-at91/at91cap9.c
	arch/arm/mach-at91/at91sam9g45.c
2012-02-07 15:05:20 -08:00
Nicolas Ferre
467f1cf504 ARM: at91/at91sam9x5: Device tree definition files
Device tree include file for the AT91SAM9x5 SoC family.
An additional .dtsi file is created to describe the generic
SAM9x5 CPU Module (CM).
Device tree source files for each Evaluation Kit that are using
the generic CPU Module and the carrier board. The selection of
available peripherals is done in this .dts file.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 15:36:41 +01:00
Dan Liang
2b9ccf3cc6 ARM: at91/at91sam9x5: SoC basic support
Add at91sam9x5.c SoC file: Define clock resources
and some initialization code.

Signed-off-by: Dan Liang <dan.liang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2012-02-03 15:36:40 +01:00
Nicolas Ferre
9a3ee403df ARM: at91/at91sam9x5: Configuration and Makefile
Kconfig and Makefile entries for SAM9x5 family.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 15:36:40 +01:00
Nicolas Ferre
11128726bf ARM: at91/at91sam9x5: clock management for at91sam9x5 chip family
Several changes to PMC have to be managed for adding this support:
- alternate prescaler location for both MCKR and PCKR
- alternate CSS length for PCKR
- added cpu_is_at91sam9x5() to functional switches
- manage UTMI bias like sam9g45 chip family

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2012-02-03 15:36:39 +01:00
Nicolas Ferre
cbd5c78e3b ARM: at91/at91sam9x5: PMC header file
Add at91sam9x5 chips family support in PMC header file:
Alternate prescaler location and CSS lenght for PCKR is added.
The new Peripheral Control Register management is added.
Protection mode register is modified to complete its management.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2012-02-03 15:36:39 +01:00
Dan Liang
8c83a607a5 ARM: at91/at91sam9x5: overall definition
Add the definitions of peripheral and system registers for sam9x5 chips family.

Signed-off-by: Dan Liang <dan.liang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2012-02-03 15:36:38 +01:00
Maxim Osipov
948ce6a6a6 ARM: at91: Add external RTC for Flexibity board
This patch enables external RTC support on AT91 Flexibity board.

Signed-off-by: Maxim Osipov <maxim.osipov@gmail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:45:17 +01:00
Josh Wu
343754f506 ARM: at91: add Atmel ISI and ov2640 support on sam9m10g45 board
This patch adds:
- ov2640 sensor in at91sam9m10g45ek board
- support to use PCK as ISI_MCK. PCK's parent is managed at
  SoC level, e.g. at91sam9g45_devices.c

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-03 13:45:17 +01:00
Josh Wu
45bb9e6fb2 ARM: at91: add clock selection parameter for at91_add_device_isi()
Add parameter and change existing call in at91sam9263_devices.c.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-03 13:45:17 +01:00
Hong Xu
bb273c8f93 ARM: at91: Update struct atmel_nand_data to support PMECC
User will use the newly added field 'correction_cap' and
'sector_size' to pass PMECC parameters to driver.

Signed-off-by: Hong Xu <hong.xu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:45:17 +01:00
Nicolas Ferre
2756bf5c03 ARM: at91/dma: DMA controller registering with DT support
Device tree support on at91sam9g45 family SoC. Only call
platform_device_register() if no dma-controller node is
found in device tree.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-03 13:45:17 +01:00
Nicolas Ferre
bdad0b9a1c ARM: at91/dma: remove platform data from DMA controller
DMA controller can deduce its configuration data from
the platform. Remove the platform data and match device
types with the compatible ones.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2012-02-03 13:45:17 +01:00
Daniel Lezcano
00482a4078 ARM: at91: implement the standby function for pm/cpuidle
This patch groups the self-refresh on/cpu_do_idle/self-refresh off into
a single 'standby' function.

The standby routine for rm9200 has been turned into an asm routine to have
a better control of the self refresh and to prevent a memory access when
running this code.

Draining the write buffer is done automatically when switching for the self
refresh on sam9, so the instruction is added to the rm9200 only.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:42:19 +01:00
Daniel Lezcano
b59160f6c0 ARM: at91: remove wait_for_interrupt definition
All the "wait_for_interrupt" definition are aliases to cpu_do_idle.
Only the rm9200 has an asm routine to switch to wfi. But the cpu_do_idle
for this platform has exactly the same asm routine.

arch/arm/mm/proc-arm920.S
..
ENTRY(cpu_arm920_do_idle)
        mcr     p15, 0, r0, c7, c0, 4           @ Wait for interrupt
..

Then it is safe to invoke cpu_do_idle for this platform. As all the
wait_for_interrupts are definition for cpu_do_idle, let's remove it
and replace its invokation by cpu_do_idle.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:42:19 +01:00
Daniel Lezcano
fa50ae9c10 ARM: at91: declare header name
Add the header and define the macro to prevent multiple inclusion
like the others headers.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:42:19 +01:00
Daniel Lezcano
c54b7bbbd2 ARM: at91: coding style fixes
This patch is mindless and does only fix the line length.
The purpose is to facilitate the review of the next patches.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:42:19 +01:00
Jean-Christophe PLAGNIOL-VILLARD
9918ceafd4 ARM: at91: code removal of CAP9 SoC
Following removal announce and addition to feature-removal-schedule.txt,
here is the actual source code deletion for Atmel CAP9 family.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-02-03 13:33:05 +01:00
Nicolas Ferre
57225b7686 Merge remote-tracking branch 'armsoc/depends/rmk/for-armsoc' into at91-3.4-base
Conflicts:
	arch/arm/mach-at91/at91cap9.c
	arch/arm/mach-at91/at91sam9g45.c
2012-02-03 12:32:26 +01:00
Linus Torvalds
62aa2b537c Linux 3.3-rc2 2012-01-31 13:31:54 -08:00
Linus Torvalds
d3712b9dfc Pull request from git://github.com/prasad-joshi/logfs_upstream.git
There are few important bug fixes for LogFS
 
 Shortlog:
 Joern Engel (5):
      logfs: Prevent memory corruption
      logfs: remove useless BUG_ON
      logfs: Free areas before calling generic_shutdown_super()
      logfs: Grow inode in delete path
      Logfs: Allow NULL block_isbad() methods
 
 Prasad Joshi (5):
      logfs: update page reference count for pined pages
      logfs: take write mutex lock during fsync and sync
      logfs: set superblock shutdown flag after generic sb shutdown
      logfs: Propagate page parameter to __logfs_write_inode
      MAINTAINERS: Add Prasad Joshi in LogFS maintiners
 
 Diffstat:
  MAINTAINERS          |    1 +
  fs/logfs/dev_mtd.c   |   26 +++++++++++-------------
  fs/logfs/dir.c       |    2 +-
  fs/logfs/file.c      |    2 +
  fs/logfs/gc.c        |    2 +-
  fs/logfs/inode.c     |    4 ++-
  fs/logfs/journal.c   |    1 -
  fs/logfs/logfs.h     |    5 +++-
  fs/logfs/readwrite.c |   51 +++++++++++++++++++++++++++++++++----------------
  fs/logfs/segment.c   |   51 ++++++++++++++++++++++++++++++++++++++-----------
  fs/logfs/super.c     |    3 +-
  11 files changed, 99 insertions(+), 49 deletions(-)
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Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream

There are few important bug fixes for LogFS

* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
  Logfs: Allow NULL block_isbad() methods
  logfs: Grow inode in delete path
  logfs: Free areas before calling generic_shutdown_super()
  logfs: remove useless BUG_ON
  MAINTAINERS: Add Prasad Joshi in LogFS maintiners
  logfs: Propagate page parameter to __logfs_write_inode
  logfs: set superblock shutdown flag after generic sb shutdown
  logfs: take write mutex lock during fsync and sync
  logfs: Prevent memory corruption
  logfs: update page reference count for pined pages

Fix up conflict in fs/logfs/dev_mtd.c due to semantic change in what
"mtd->block_isbad" means in commit f2933e86ad: "Logfs: Allow NULL
block_isbad() methods" clashing with the abstraction changes in the
commits 7086c19d07: "mtd: introduce mtd_block_isbad interface" and
d58b27ed58: "logfs: do not use 'mtd->block_isbad' directly".

This resolution takes the semantics from commit f2933e86ad, and just
makes mtd_block_isbad() return zero (false) if the 'block_isbad'
function is NULL.  But that also means that now "mtd_can_have_bb()"
always returns 0.

Now, "mtd_block_markbad()" will obviously return an error if the
low-level driver doesn't support bad blocks, so this is somewhat
non-symmetric, but it actually makes sense if a NULL "block_isbad"
function is considered to mean "I assume that all my blocks are always
good".
2012-01-31 09:23:59 -08:00
Linus Torvalds
c5d2bc1103 Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
  hwmon: (sht15) fix bad error code
  MAINTAINERS: Drop maintainer for MAX1668 hwmon driver
  MAINTAINERS: Add hwmon entries for Wolfson
  hwmon: (f71805f) Fix clamping of temperature limits
2012-01-30 17:08:40 -08:00
Linus Torvalds
8e2a2880a5 Merge branch 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Here are some fixes to the pin control system that has accumulated since
-rc1.  Mainly Tony Lindgren fixed the module load/unload logic and the
rest are minor fixes and documentation.

* 'for-torvalds' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: add checks for empty function names
  pinctrl: fix pinmux_hog_maps when ctrl_dev_name is not set
  pinctrl: fix some pinmux typos
  pinctrl: free debugfs entries when unloading a pinmux driver
  pinctrl: unbreak error messages
  Documentation/pinctrl: fix a few syntax errors in code examples
  pinctrl: fix pinconf_pins_show iteration
2012-01-30 17:06:26 -08:00
Linus Torvalds
27ba234c8d Here are some tty/serial patches for 3.3-rc1
Big thing here is the movement of the 8250 serial drivers to their own
 directory, now that the patch churn has calmed down.
 
 Other than that, only minor stuff (omap patches were reverted as they
 were found to be wrong), and another broken driver removed from the
 system.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Merge tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Here are some tty/serial patches for 3.3-rc1

Big thing here is the movement of the 8250 serial drivers to their own
directory, now that the patch churn has calmed down.

Other than that, only minor stuff (omap patches were reverted as they
were found to be wrong), and another broken driver removed from the
system.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

* tag 'tty-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: Kill off Moorestown code
  Revert "tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode"
  Revert "tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip"
  serial: Fix wakeup init logic to speed up startup
  docbook: don't use serial_core.h in device-drivers book
  serial: amba-pl011: lock console writes against interrupts
  amba-pl011: do not disable RTS during shutdown
  tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip
  tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode
  omap-serial: make serial_omap_restore_context depend on CONFIG_PM_RUNTIME
  omap-serial :Make the suspend/resume functions depend on CONFIG_PM_SLEEP.
  TTY: fix UV serial console regression
  jsm: Fixed EEH recovery error
  Updated TTY MAINTAINERS info
  serial: group all the 8250 related code together
2012-01-30 15:17:21 -08:00
Linus Torvalds
6bc2b95ee6 Here are a bunch of USB patches for 3.3-rc1.
Nothing major, largest thing here is the removal of some drivers that
 did not work at all.  Other than that, the normal collection of bugfixes
 and new device ids.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Merge tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Here are a bunch of USB patches for 3.3-rc1.

Nothing major, largest thing here is the removal of some drivers that
did not work at all.  Other than that, the normal collection of bugfixes
and new device ids.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

* tag 'usb-3.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (52 commits)
  uwb & wusb: fix kconfig error
  USB: Realtek cr: fix autopm scheduling while atomic
  USB: ftdi_sio: Add more identifiers
  xHCI: Cleanup isoc transfer ring when TD length mismatch found
  usb: musb: omap2430: minor cleanups.
  qcaux: add more Pantech UML190 and UML290 ports
  Revert "drivers: usb: Fix dependency for USB_HWA_HCD"
  usb: mv-otg - Fix build if CONFIG_USB is not set
  USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
  usb: add support for STA2X11 host driver
  drivers: usb: Fix dependency for USB_HWA_HCD
  kernel-doc: fix new warning in usb.h
  USB: OHCI: fix new compiler warnings
  usb: serial: kobil_sct: fix compile warning:
  drivers/usb/host/ehci-fsl.c: add missing iounmap
  USB: cdc-wdm: better allocate a buffer that is at least as big as we tell the USB core
  USB: cdc-wdm: call wake_up_all to allow driver to shutdown on device removal
  USB: cdc-wdm: use two mutexes to allow simultaneous read and write
  USB: cdc-wdm: updating desc->length must be protected by spin_lock
  USB: usbsevseg: fix max length
  ...
2012-01-30 11:38:28 -08:00
Linus Torvalds
a14a8d9316 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
1) Setting link attributes can modify the size of the attributes that
   would be reported on a subsequent getlink netlink operation,
   therefore min_ifinfo_dump_size needs to be adjusted.  From Stefan
   Gula.

2) Resegmentation of TSO frames while trimming can violate invariants
   expected by callers, namely that the number of segments can only stay
   the same or decrease, never increase.  If MSS changes, however, we
   can trim data but then end up with more segments.  Fix this by only
   segmenting to the MSS already recorded in the SKB.  That's the
   simplest fix for now and if we want to get more fancy in the future
   that's a more involved change.

   This probably explains some retransmit counter inaccuracies.

   From Neal Cardwell.

3) Fix too-many-wakeups in POLL with AF_UNIX sockets, from Eric Dumazet.

4) Fix CAIF crashes wrt.  namespace handling.  From Eric Dumazet and
   Eric W. Biederman.

5) TCP port selection fixes from Flavio Leitner.

6) More socket memory cgroup build fixes in certain randonfig
   situations.  From Glauber Costa.

7) Fix TCP memory sysctl regression reported by Ingo Molnar, also from
   Glauber Costa.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  af_unix: fix EPOLLET regression for stream sockets
  tcp: fix tcp_trim_head() to adjust segment count with skb MSS
  net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
  net caif: Register properly as a pernet subsystem.
  netns: Fail conspicously if someone uses net_generic at an inappropriate time.
  net: explicitly add jump_label.h header to sock.h
  net: RTNETLINK adjusting values of min_ifinfo_dump_size
  ipv6: Fix ip_gre lockless xmits.
  xen-netfront: correct MAX_TX_TARGET calculation.
  netns: fix net_alloc_generic()
  tcp: bind() optimize port allocation
  tcp: bind() fix autoselection to share ports
  l2tp: l2tp_ip - fix possible oops on packet receive
  iwlwifi: fix PCI-E transport "inta" race
  mac80211: set bss_conf.idle when vif is connected
  mac80211: update oper_channel on ibss join
2012-01-30 10:53:20 -08:00
Linus Torvalds
b527a2331b This fixes an integration issue with the regulator device tree bindings
which shook out in -rc.  The bindings were overly enthusiatic when
 deciding to set a voltage on a regulator and would try to set zero volts
 on an unconfigured regulator which isn't supported.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

This fixes an integration issue with the regulator device tree bindings
which shook out in -rc.  The bindings were overly enthusiatic when
deciding to set a voltage on a regulator and would try to set zero volts
on an unconfigured regulator which isn't supported.

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Set apply_uV only when min and max voltages are defined
2012-01-30 10:16:25 -08:00
Eric Dumazet
6f01fd6e6f af_unix: fix EPOLLET regression for stream sockets
Commit 0884d7aa24 (AF_UNIX: Fix poll blocking problem when reading from
a stream socket) added a regression for epoll() in Edge Triggered mode
(EPOLLET)

Appropriate fix is to use skb_peek()/skb_unlink() instead of
skb_dequeue(), and only call skb_unlink() when skb is fully consumed.

This remove the need to requeue a partial skb into sk_receive_queue head
and the extra sk->sk_data_ready() calls that added the regression.

This is safe because once skb is given to sk_receive_queue, it is not
modified by a writer, and readers are serialized by u->readlock mutex.

This also reduce number of spinlock acquisition for small reads or
MSG_PEEK users so should improve overall performance.

Reported-by: Nick Mathewson <nickm@freehaven.net>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexey Moiseytsev <himeraster@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-30 12:45:07 -05:00
Neal Cardwell
5b35e1e6e9 tcp: fix tcp_trim_head() to adjust segment count with skb MSS
This commit fixes tcp_trim_head() to recalculate the number of
segments in the skb with the skb's existing MSS, so trimming the head
causes the skb segment count to be monotonically non-increasing - it
should stay the same or go down, but not increase.

Previously tcp_trim_head() used the current MSS of the connection. But
if there was a decrease in MSS between original transmission and ACK
(e.g. due to PMTUD), this could cause tcp_trim_head() to
counter-intuitively increase the segment count when trimming bytes off
the head of an skb. This violated assumptions in tcp_tso_acked() that
tcp_trim_head() only decreases the packet count, so that packets_acked
in tcp_tso_acked() could underflow, leading tcp_clean_rtx_queue() to
pass u32 pkts_acked values as large as 0xffffffff to
ca_ops->pkts_acked().

As an aside, if tcp_trim_head() had really wanted the skb to reflect
the current MSS, it should have called tcp_set_skb_tso_segs()
unconditionally, since a decrease in MSS would mean that a
single-packet skb should now be sliced into multiple segments.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-30 12:42:58 -05:00
Glauber Costa
4acb41903b net/tcp: Fix tcp memory limits initialization when !CONFIG_SYSCTL
sysctl_tcp_mem() initialization was moved to sysctl_tcp_ipv4.c
in commit 3dc43e3e4d, since it
became a per-ns value.

That code, however, will never run when CONFIG_SYSCTL is
disabled, leading to bogus values on those fields - causing hung
TCP sockets.

This patch fixes it by keeping an initialization code in
tcp_init(). It will be overwritten by the first net namespace
init if CONFIG_SYSCTL is compiled in, and do the right thing if
it is compiled out.

It is also named properly as tcp_init_mem(), to properly signal
its non-sysctl side effect on TCP limits.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Glauber Costa <glommer@parallels.com>
Cc: David S. Miller <davem@davemloft.net>
Link: http://lkml.kernel.org/r/4F22D05A.8030604@parallels.com
[ renamed the function, tidied up the changelog a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-30 12:41:06 -05:00
Linus Torvalds
883120eb32 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  [S390] dasd: revalidate server for new pathgroup
  [S390] dasd: revert LCU optimization
  [S390] cleanup entry point definition
2012-01-30 09:02:10 -08:00
Linus Torvalds
f07d4a7647 Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: generic atomic64 support
2012-01-30 08:59:46 -08:00
Linus Torvalds
dfd07ec3fa Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  vmwgfx: Fix assignment in vmw_framebuffer_create_handle
  drm/radeon/kms: Fix device tree linkage of i2c buses
  drm: Pass the real error code back during GEM bo initialisation
  Revert "drm/i810: cleanup reclaim_buffers"
2012-01-30 08:56:41 -08:00
Linus Torvalds
f94f72ee67 NFS client bugfixes for Linux 3.3 (pull 3)
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Merge tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

NFS client bugfixes for Linux 3.3 (pull 3)

* tag 'nfs-for-3.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Fix machine creds in generic_create_cred and generic_match
2012-01-30 08:47:49 -08:00
Linus Torvalds
a51f67a4b4 Power management fix for 3.3-rc2
Fix for a hibernate (s2disk) regression introduced during the 3.2
 merge window that causes s2disk to trigger BUG_ON() in
 freeze_workqueues_begin() if there is not enough swap space to save
 the image.
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Merge tag 'pm-fix-for-3.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Power management fix for 3.3-rc2

Fix for a hibernate (s2disk) regression introduced during the 3.2
merge window that causes s2disk to trigger BUG_ON() in
freeze_workqueues_begin() if there is not enough swap space to save
the image.

* tag 'pm-fix-for-3.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Hibernate: Fix s2disk regression related to freezing workqueues
2012-01-30 08:33:40 -08:00
Ryan Mallon
bf9c05d5b6 vmwgfx: Fix assignment in vmw_framebuffer_create_handle
The assignment of handle in vmw_framebuffer_create_handle doesn't actually do anything useful and is incorrectly assigning an integer value to a pointer argument. It appears that this is a typo and should be dereferencing handle rather than assigning to it directly. This fixes a bug where an undefined handle value is potentially returned to user-space.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Reviewed-by: Jakob Bornecrantz<jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-30 09:32:39 +00:00
Jean Delvare
1ffd57c1da drm/radeon/kms: Fix device tree linkage of i2c buses
Properly set the parent device of i2c buses before registering them so
that they will show at the right place in the device tree (rather than
in /sys/devices directly.)

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Dave Airlie <airlied@gmail.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-30 09:32:11 +00:00
Chris Wilson
dd8bc93d45 drm: Pass the real error code back during GEM bo initialisation
In particular, I found I was hitting the max-file limit in the VFS,
and the EFILE was being magically transformed into ENOMEM. Confusion
reigns.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-30 09:31:42 +00:00
Daniel Vetter
6e877b576d Revert "drm/i810: cleanup reclaim_buffers"
This reverts commit 87499ffdcb.

Where is that paper bag ... ah here.

I've failed to take an odd interaction between my other cleanups and
this reclaim_buffers patch into account and also failed to properly
test it. Looks like there are more dragons and hidden trapdoors in the
drm release path than actual lines of code.

Until I get a clue, let's just revert this.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-30 09:31:25 +00:00
Guenter Roeck
ad77c3e180 hwmon: (w83627ehf) Disable setting DC mode for pwm2, pwm3 on NCT6776F
NCT6776F only supports pwm mode for pwm2 and pwm3. Return error if an attempt
is made to set those pwm channels to DC mode.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-01-29 13:06:07 -08:00
Rafael J. Wysocki
181e9bdef3 PM / Hibernate: Fix s2disk regression related to freezing workqueues
Commit 2aede851dd

  PM / Hibernate: Freeze kernel threads after preallocating memory

introduced a mechanism by which kernel threads were frozen after
the preallocation of hibernate image memory to avoid problems with
frozen kernel threads not responding to memory freeing requests.
However, it overlooked the s2disk code path in which the
SNAPSHOT_CREATE_IMAGE ioctl was run directly after SNAPSHOT_FREE,
which caused freeze_workqueues_begin() to BUG(), because it saw
that worqueues had been already frozen.

Although in principle this issue might be addressed by removing
the relevant BUG_ON() from freeze_workqueues_begin(), that would
reintroduce the very problem that commit 2aede851dd
attempted to avoid into that particular code path.  For this reason,
to fix the issue at hand, introduce thaw_kernel_threads() and make
the SNAPSHOT_FREE ioctl execute it.

Special thanks to Srivatsa S. Bhat for detailed analysis of the
problem.

Reported-and-tested-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: stable@kernel.org
2012-01-29 20:35:52 +01:00
Vivien Didelot
6edf3c30af hwmon: (sht15) fix bad error code
When no platform data was supplied, returned error code was 0.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Cc: stable@vger.kernel.org # 2.6.32+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-01-29 10:35:21 -08:00
Linus Torvalds
0a96265754 Here are some patches for the 3.3-rc1 tree.
It contains the removal of the sysdev code, now that all users of it are
 gone, as well as some sysfs bugfixes that have been reported by users.
 There are also some documentation updates here as well.
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Merge tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Here are some patches for the 3.3-rc1 tree.

It contains the removal of the sysdev code, now that all users of it are
gone, as well as some sysfs bugfixes that have been reported by users.
There are also some documentation updates here as well.

* tag 'driver-core-3.3-rc1-bugfixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
  stable: update documentation to ask for kernel version
  base/core.c:fix typo in comment in function device_add
  Documentation: devres: add allocation functions to list of supported calls
  Documentation update for the driver model core
  kernel-doc: fix new warnings in driver-core
  kernel-doc: fix new warnings in debugfs
  kernel-doc: fix new warnings in device.h
  driver core: remove drivers/base/sys.c and include/linux/sysdev.h
2012-01-28 18:20:48 -08:00
Linus Torvalds
e3b8369ca8 Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  lguest: remove reference from Documentation/virtual/00-INDEX
  virtio: correct the memory barrier in virtqueue_kick_prepare()
  virtio: fix typos of memory barriers
2012-01-28 18:16:09 -08:00