Commit Graph

287102 Commits

Author SHA1 Message Date
Tyler Hicks
db10e55651 eCryptfs: Sanitize write counts of /dev/ecryptfs
A malicious count value specified when writing to /dev/ecryptfs may
result in a a very large kernel memory allocation.

This patch peeks at the specified packet payload size, adds that to the
size of the packet headers and compares the result with the write count
value. The resulting maximum memory allocation size is approximately 532
bytes.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Cc: <stable@vger.kernel.org>
2012-01-25 14:43:39 -06:00
Tim Gardner
bb4503615d ecryptfs: Remove unnecessary variable initialization
Removes unneeded variable initialization in ecryptfs_read_metadata(). Also adds
a small comment to help explain metadata reading logic.

[tyhicks@canonical.com: Pulled out of for-stable patch and wrote commit msg]
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2012-01-25 14:43:38 -06:00
Tim Gardner
30373dc0c8 ecryptfs: Improve metadata read failure logging
Print inode on metadata read failure. The only real
way of dealing with metadata read failures is to delete
the underlying file system file. Having the inode
allows one to 'find . -inum INODE`.

[tyhicks@canonical.com: Removed some minor not-for-stable parts]
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2012-01-25 14:43:38 -06:00
Dustin Kirkland
140941987f MAINTAINERS: Update eCryptfs maintainer address
Update my email address in MAINTAINERS.

Signed-off-by: Dustin Kirkland <dustin.kirkland@gazzang.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2012-01-25 14:43:38 -06:00
Ben Skeggs
9f1feed2e1 drm/ttm: fix two regressions since move_notify changes
Both changes in dc97b3409a cause serious
regressions in the nouveau driver.

move_notify() was originally able to presume that bo->mem is the old node,
and new_mem is the new node.  The above commit moves the call to
move_notify() to after move() has been done, which means that now, sometimes,
new_mem isn't the new node at all, bo->mem is, and new_mem points at a
stale, possibly-just-been-killed-by-move node.

This is clearly not a good situation.  This patch reverts this change, and
replaces it with a cleanup in the move() failure path instead.

The second issue is that the call to move_notify() from cleanup_memtype_use()
causes the TTM ghost objects to get passed into the driver.  This is clearly
bad as the driver knows nothing about these "fake" TTM BOs, and ends up
accessing uninitialised memory.

I worked around this in nouveau's move_notify() hook by ensuring the BO
destructor was nouveau's.  I don't particularly like this solution, and
would rather TTM never pass the driver these objects.  However, I don't
clearly understand the reason why we're calling move_notify() here anyway
and am happy to work around the problem in nouveau instead of breaking the
behaviour expected by other drivers.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Jerome Glisse <j.glisse@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-25 18:54:28 +00:00
Daniel Vetter
93b525dccf drm/i915: fixup forcewake spinlock fallout in drpc debugfs function
My forcewake spinlock patches have a functional conflict with Ben
Widawsky's gen6 drpc support for debugfs. Result was a benign warning
about trying to read an non-atomic variabla with atomic_read.

Note that the entire check is racy anyway and purely informational.
Also update it to reflect the forcewake voodoo changes, the kernel can
now also hold onto a forcewake reference for longer times.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-25 09:15:33 -08:00
Jan Kara
9b025eb3a8 xfs: Fix missing xfs_iunlock() on error recovery path in xfs_readlink()
Commit b52a360b forgot to call xfs_iunlock() when it detected corrupted
symplink and bailed out. Fix it by jumping to 'out' instead of doing return.

CC: stable@kernel.org
CC: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Alex Elder <elder@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2012-01-25 11:01:31 -06:00
Greg Kroah-Hartman
7c24814f7e Merge branch 'for-greg' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
* 'for-greg' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb:
  usb: musb: omap2430: minor cleanups.
  usb: dwc3: unmap the proper number of sg entries
  usb: musb: fix shutdown while usb gadget is in use
  usb: gadget: f_mass_storage: Use "bool" instead of "int" in fsg_module_parameters
  usb: gadget: check for streams only for SS udcs
  usb: gadget: fsl_udc: fix the usage of udc->max_ep
  drivers: usb: otg: Fix dependencies for some OTG drivers
  usb: renesas: silence uninitialized variable report in usbhsg_recip_run_handle()
  usb: gadget: SS Isoc endpoints use comp_desc->bMaxBurst too
  usb: gadget: storage: endian fix
  usb: dwc3: ep0: fix compile warning
  usb: musb: davinci: fix build breakage
  usb: gadget: langwell: don't call gadget's disconnect()
  usb: gadget: langwell: drop langwell_otg support
  usb: otg: kill langwell_otg driver
  usb: dwc3: ep0: tidy up Pending Request handling
2012-01-25 07:48:44 -08:00
Catalin Marinas
4e7682d077 ARM: 7301/1: Rename the T() macro to TUSER() to avoid namespace conflicts
This macro is used to generate unprivileged accesses (LDRT/STRT) to user
space.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-25 11:07:40 +00:00
Jerome Glisse
9fc04b503d drm/radeon: avoid deadlock if GPU lockup is detected in ib_pool_get
If GPU lockup is detected in ib_pool get we are holding the ib_pool
mutex that will be needed by the GPU reset code. As ib_pool code is
safe to be reentrant from GPU reset code we should not block if we
are trying to get the ib pool lock on the behalf of the same userspace
caller, thus use the radeon_mutex_lock helper.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-25 09:42:06 +00:00
Jerome Glisse
d54fbd49ef drm/radeon: silence out possible lock dependency warning
Silence out the lock dependency warning by moving bo allocation out
of ib mutex protected section. Might lead to useless temporary
allocation but it's not harmful as such things only happen at
initialization.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-25 09:28:21 +00:00
Thomas Hellstrom
598781d711 drm: Fix authentication kernel crash
If the master tries to authenticate a client using drm_authmagic and
that client has already closed its drm file descriptor,
either wilfully or because it was terminated, the
call to drm_authmagic will dereference a stale pointer into kmalloc'ed memory
and corrupt it.

Typically this results in a hard system hang.

This patch fixes that problem by removing any authentication tokens
(struct drm_magic_entry) open for a file descriptor when that file
descriptor is closed.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-25 09:27:45 +00:00
Rabin Vincent
d68133b5a8 ARM: 7299/1: ftrace: clear zero bit in reported IPs for Thumb-2
The dynamic ftrace ops startup test currently fails on Thumb-2 kernels:

 Testing tracer function: PASSED
 Testing dynamic ftrace: PASSED
 Testing dynamic ftrace ops #1: (0 0 0 0 0) FAILED!

This is because while the addresses in the mcount records do not have
the zero bit set, the IP reported by the mcount call does have it set
(because it is copied from the LR).  This mismatch causes the ops
filtering in ftrace_ops_list_func() to not call the relevant tracers.

Fix this by clearing the zero bit before adjusting the LR for the mcount
instruction size.  Also, combine the mov+sub into a single sub
instruction.

Acked-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-25 09:24:37 +00:00
Marc Zyngier
34ae6c96a6 ARM: 7298/1: realview: fix mapping of MPCore private memory region
Since commit 0536bdf33f (ARM: move iotable mappings within
the vmalloc region), the RealView PB11MP cannot boot anymore.

This is caused by the way the mappings are described on this
platform (define replaced by hex values for clarity):

{	/* GIC CPU interface mapping */
        .virtual        = IO_ADDRESS(0x1F000100),
        .pfn            = __phys_to_pfn(0x1F000100),
        .length         = SZ_4K,
        .type           = MT_DEVICE,
}, {	/* GIC distributor mapping */
        .virtual        = IO_ADDRESS(0x1F001000),
        .pfn            = __phys_to_pfn(0x1F001000),
        .length         = SZ_4K,
        .type           = MT_DEVICE,
}

The first mapping ends up reserving two pages, and clashes with
the second one, which triggers a BUG_ON in vm_area_add_early().

In order to solve this problem, treat the MPCore private memory
region (containing the SCU, the GIC and the TWD) as a single region,
as described in the TRM:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0360f/CACGDJJC.html

The EB11MP is converted the same way, even if it manages to avoid
the problem.

Tested on both PB11MP and EB11MP.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-25 09:24:36 +00:00
Gustavo Maciel Dias Vieira
a6a600d10a ALSA: hda: set mute led polarity for laptops with buggy BIOS based on SSID
HP laptop models with buggy BIOS are apparently frequent, including
machines with different codecs. Set the polarity of the mute led based
on the SSID and include an entry for the HP Mini 110-3100.

Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org>
Tested-by: Predrag Ivanovic <predivan@open.telekom.rs>
Cc: <stable@kernel.org> [v3.2+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-01-25 10:00:12 +01:00
Takashi Iwai
3b25eb690e ALSA: hda - Fix silent output on ASUS A6Rp
The refactoring of Realtek codec driver in 3.2 kernel caused a
regression for ASUS A6Rp laptop; it doesn't give any output.
The reason was that this machine has a secret master mute (or EAPD)
control via NID 0x0f VREF.  Setting VREF50 on this node makes the
sound working again.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42588

Cc: <stable@kernel.org> [v3.2+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-01-25 09:59:57 +01:00
NeilBrown
b30b3c60a2 usb: musb: omap2430: minor cleanups.
1/ remove incorrect comment (it is a non-blocking notifier)
2/ Use correct symbolic return value for notifier
3/ Make sure otg_notifier_work is cancelled before module exit.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-01-25 10:02:46 +02:00
Linus Torvalds
f8275f9694 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Quoth Len:
 "This fixes a merge-window regression due to a conflict
  between error injection and preparation to remove atomicio.c
  Here we fix that regression and complete the removal
  of atomicio.c.

  This also re-orders some idle initialization code to
  complete the merge window series that allows cpuidle
  to cope with bringing processors on-line after boot."

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  Use acpi_os_map_memory() instead of ioremap() in einj driver
  ACPI, APEI, EINJ, cleanup 0 vs NULL confusion
  ACPI, APEI, EINJ Allow empty Trigger Error Action Table
  thermal: Rename generate_netlink_event
  ACPI / PM: Add Sony Vaio VPCCW29FX to nonvs blacklist.
  ACPI: Remove ./drivers/acpi/atomicio.[ch]
  ACPI, APEI: Add RAM mapping support to ACPI
  ACPI, APEI: Add 64-bit read/write support for APEI on i386
  ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores
  ACPI processor hotplug: Split up acpi_processor_add
2012-01-24 22:05:44 -08:00
Linus Torvalds
a86b4ad6da Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix build on some non-freescale platforms
  powerpc/powernv: Fix PCI resource handling
  powerpc/crash: Fix build error without SMP
  powerpc/cpuidle: Make it a bool, not a tristate
  powerpc/85xx: Add dr_mode property in USB nodes
  powerpc/85xx: Enable USB2 controller node for P1020RDB
  powerpc/85xx: Fix cmd12 bug and add the chip compatible for eSDHC
  arch/powerpc/sysdev/fsl_pci.c: add missing iounmap
  powerpc: fix compile error with 85xx/p1022_ds.c
2012-01-24 21:17:51 -08:00
Benjamin Herrenschmidt
3493c85366 powerpc: Fix build on some non-freescale platforms
Commit 9deaa53ac7 broke build
on platforms that use legacy_serial.c without also having
CONFIG_SERIAL_8250_FSL enabled due to an unconditional code
to a routine in that module.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-01-25 13:33:22 +11:00
Benjamin Herrenschmidt
f7ea82beb2 powerpc/powernv: Fix PCI resource handling
Recent changes to the handling of PCI resources for host bridges
are breaking the PowerNV code for assigning resources on IODA.

The root of the problem is that the pci_bus attached to a host
bridge no longer has its "legacy" resource pointers populated
but only uses the newer list instead.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-01-25 13:32:00 +11:00
Simon Glass
773598357c serial: Fix wakeup init logic to speed up startup
The synchronize_rcu() call resulting from making every serial driver
wake-up capable (commit b3b708fa) slows boot down on my Tegra2x system
(with CONFIG_PREEMPT disabled).

But this is avoidable since it is the device_set_wakeup_enable() and then
subsequence disable which causes the delay. We might as well just make
the device wakeup capable but not actually enable it for wakeup until
needed.

Effectively the current code does this:

	device_set_wakeup_capable(dev, 1);
	device_set_wakeup_enable(dev, 1);
	device_set_wakeup_enable(dev, 0);

We can just drop the last two lines.

Before this change my boot log says:
[    0.227062] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    0.702928] serial8250.0: ttyS0 at MMIO 0x70006040 (irq = 69) is a Tegra

after:
[    0.227264] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
[    0.227983] serial8250.0: ttyS0 at MMIO 0x70006040 (irq = 69) is a Tegra

for saving of 450ms.

Suggested-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 16:29:40 -08:00
Randy Dunlap
a5492e6591 docbook: don't use serial_core.h in device-drivers book
Fix new kernel-doc warning.  This file no longer contains
kernel-doc comments.

Warning(include/linux/serial_core.h): no structured comments found

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 16:09:55 -08:00
Rabin Vincent
ef605fdb33 serial: amba-pl011: lock console writes against interrupts
Protect against pl011_console_write() and the interrupt for
the console UART running concurrently on different CPUs.

Otherwise the console_write could spin for a long time
waiting for the UART to become not busy, while the other
CPU continuously services UART interrupts and keeps the
UART busy.

The checks for sysrq and oops_in_progress are taken
from 8250.c.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Reviewed-by: Bibek Basu <bibek.basu@stericsson.com>
Reviewed-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 16:09:55 -08:00
Shreshtha Kumar Sahu
d8d8ffa477 amba-pl011: do not disable RTS during shutdown
In present driver, shutdown clears RTS and DTR in CR register. But the
documentation "Documentation/serial/driver" suggests not to disable
RTS and DTR in shutdown(). Also RTS and DTR is preserved between shutdown
and startup calls, i.e. these are restored in startup if they were enabled
while doing shutdown. So that if RTS and DTR are set using pl011_set_mctrl
then it should continue even after shutdown->startup sequence.
For throttling/unthrottling user should call pl011_set_mctrl.

Signed-off-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 16:09:55 -08:00
Linus Torvalds
701b259f44 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Davem says:

1) Fix JIT code generation on x86-64 for divide by zero, from Eric Dumazet.

2) tg3 header length computation correction from Eric Dumazet.

3) More build and reference counting fixes for socket memory cgroup
   code from Glauber Costa.

4) module.h snuck back into a core header after all the hard work we
   did to remove that, from Paul Gortmaker and Jesper Dangaard Brouer.

5) Fix PHY naming regression and add some new PCI IDs in stmmac, from
   Alessandro Rubini.

6) Netlink message generation fix in new team driver, should only advertise
   the entries that changed during events, from Jiri Pirko.

7) SRIOV VF registration and unregistration fixes, and also add a
   missing PCI ID, from Roopa Prabhu.

8) Fix infinite loop in tx queue flush code of brcmsmac, from Stanislaw Gruszka.

9) ftgmac100/ftmac100 build fix, missing interrupt.h include.

10) Memory leak fix in net/hyperv do_set_mutlicast() handling, from Wei Yongjun.

11) Off by one fix in netem packet scheduler, from Vijay Subramanian.

12) TCP loss detection fix from Yuchung Cheng.

13) TCP reset packet MD5 calculation uses wrong address, fix from Shawn Lu.

14) skge carrier assertion and DMA mapping fixes from Stephen Hemminger.

15) Congestion recovery undo performed at the wrong spot in BIC and CUBIC
    congestion control modules, fix from Neal Cardwell.

16) Ethtool ETHTOOL_GSSET_INFO is unnecessarily restrictive, from Michał Mirosław.

17) Fix triggerable race in ipv6 sysctl handling, from Francesco Ruggeri.

18) Statistics bug fixes in mlx4 from Eugenia Emantayev.

19) rds locking bug fix during info dumps, from your's truly.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (67 commits)
  rds: Make rds_sock_lock BH rather than IRQ safe.
  netprio_cgroup.h: dont include module.h from other includes
  net: flow_dissector.c missing include linux/export.h
  team: send only changed options/ports via netlink
  net/hyperv: fix possible memory leak in do_set_multicast()
  drivers/net: dsa/mv88e6xxx.c files need linux/module.h
  stmmac: added PCI identifiers
  llc: Fix race condition in llc_ui_recvmsg
  stmmac: fix phy naming inconsistency
  dsa: Add reporting of silicon revision for Marvell 88E6123/88E6161/88E6165 switches.
  tg3: fix ipv6 header length computation
  skge: add byte queue limit support
  mv643xx_eth: Add Rx Discard and Rx Overrun statistics
  bnx2x: fix compilation error with SOE in fw_dump
  bnx2x: handle CHIP_REVISION during init_one
  bnx2x: allow user to change ring size in ISCSI SD mode
  bnx2x: fix Big-Endianess in ethtool -t
  bnx2x: fixed ethtool statistics for MF modes
  bnx2x: credit-leakage fixup on vlan_mac_del_all
  macvlan: fix a possible use after free
  ...
2012-01-24 15:51:40 -08:00
Dan Williams
074cc73506 qcaux: add more Pantech UML190 and UML290 ports
More ports we now know how to talk to.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 15:47:52 -08:00
Greg Kroah-Hartman
0c8b92f7f2 Revert "drivers: usb: Fix dependency for USB_HWA_HCD"
This reverts commit 0dd2b62ada.

It causes a bunch of Kconfig errors:

drivers/usb/host/Kconfig:559:error: recursive dependency detected!
drivers/usb/host/Kconfig:559:	symbol USB_HWA_HCD depends on UWB
drivers/uwb/Kconfig:5:	symbol UWB is selected by USB_WUSB
drivers/usb/wusbcore/Kconfig:4:	symbol USB_WUSB is selected by USB_HWA_HCD

showing that this really wasn't the correct fix at all.

Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 15:33:44 -08:00
Geert Uytterhoeven
2053c2d1b1 usb: mv-otg - Fix build if CONFIG_USB is not set
ERROR: "usb_remove_hcd" [drivers/usb/otg/mv_otg.ko] undefined!
ERROR: "usb_add_hcd" [drivers/usb/otg/mv_otg.ko] undefined!

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
--
Inpired by drivers/usb/otg/msm_otg.c. Is this correct?

 drivers/usb/otg/mv_otg.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:58:45 -08:00
Christian Kujau
897e01a08c powerpc/crash: Fix build error without SMP
I could not find cpus_in_crash anywhere in the sourcetree, except for
arch/powerpc/kernel/crash.c. Moving the definition into the CONFIG_SMP
fixes it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-01-25 09:47:45 +11:00
Deepthi Dharwar
f7aa554510 powerpc/cpuidle: Make it a bool, not a tristate
As pointed out, asm/system.h has empty inline implementations for
update_smt_snooze_delay and pseries_notify_cpuidle_add_cpu, which are
used when CONFIG_PSERIES_IDLE is undefined. Since those two functions
are used in core power architecture functions (store_smt_snooze_delay
at kernel/sysfs.c and smp_xics_setup_cpu at platforms/pseries/smp.c),

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-01-25 09:43:06 +11:00
Benjamin Herrenschmidt
407a362f94 Merge remote-tracking branch 'kumar/merge' into merge 2012-01-25 09:40:34 +11:00
Bjørn Mork
15699e6faf USB: cdc-wdm: Avoid hanging on interface with no USB_CDC_DMM_TYPE
The probe does not strictly require the USB_CDC_DMM_TYPE
descriptor, which is a good thing as it makes the driver
usable on non-conforming interfaces.  A user could e.g.
bind to it to a CDC ECM interface by using the new_id and
bind sysfs files.  But this would fail with a 0 buffer length
due to the missing descriptor.

Fix by defining a reasonable fallback size: The minimum
device receive buffer size required by the CDC WMC standard,
revision 1.1

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:38:58 -08:00
Alessandro Rubini
3a0bac0676 usb: add support for STA2X11 host driver
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:15:37 -08:00
Fabio Estevam
0dd2b62ada drivers: usb: Fix dependency for USB_HWA_HCD
Fix the following build warning:

warning: (USB_HWA_HCD) selects UWB_HWA which has unmet direct dependencies (UWB && USB)

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:15:37 -08:00
Paul Walmsley
43cf7c0beb tty: serial: OMAP: transmit FIFO threshold interrupts don't wake the chip
It seems that when the transmit FIFO threshold is reached on OMAP
UARTs, it does not result in a PRCM wakeup.  This appears to be a
silicon bug.  This means that if the MPU powerdomain is in a low-power
state, the MPU will not be awakened to refill the FIFO until the next
interrupt from another device.

The best solution, at least for the short term, would be for the OMAP
serial driver to call a OMAP subarchitecture function to prevent the
MPU powerdomain from entering a low power state while the FIFO has
data to transmit.  However, we no longer have a clean way to do this,
since patches that add platform_data function pointers have been
deprecated by the OMAP maintainer.  So we attempt to work around this
as well.  The workarounds depend on the setting of CONFIG_CPU_IDLE.

When CONFIG_CPU_IDLE=n, the driver will now only transmit one byte at
a time.  This causes the transmit FIFO threshold interrupt to stay
active until there is no more data to be sent.  Thus, the MPU
powerdomain stays on during transmits.  Aside from that energy
consumption penalty, each transmitted byte results in a huge number of
UART interrupts -- about five per byte.  This wastes CPU time and is
quite inefficient, but is probably the most expedient workaround in
this case.

When CONFIG_CPU_IDLE=y, there is a slightly more direct workaround:
the PM QoS constraint can be abused to keep the MPU powerdomain on.
This results in a normal number of interrupts, but, similar to the
above workaround, wastes power by preventing the MPU from entering
WFI.

Future patches are planned for the 3.4 merge window to implement more
efficient, but also more disruptive, workarounds to these problems.

DMA operation is unaffected by this patch.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Govindraj Raja <govindraj.r@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:11:07 -08:00
Paul Walmsley
0a697b2225 tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA mode
Ensure FIFO levels are set correctly in non-DMA mode (the default).
This patch will cause a receive FIFO threshold interrupt to be raised when
there is at least one byte in the RX FIFO.  It will also cause a transmit
FIFO threshold interrupt when there is only one byte remaining in the TX
FIFO.

These changes fix the receive interrupt problem and part of the
transmit interrupt problem.  A separate set of issues must be worked
around for the transmit path to have a basic level of functionality; a
subsequent patch will address these.

DMA operation is unaffected by this patch.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Govindraj Raja <govindraj.r@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:11:07 -08:00
Shubhrajyoti D
b5148856a2 omap-serial: make serial_omap_restore_context depend on CONFIG_PM_RUNTIME
The function serial_omap_restore_context is called only from
serial_omap_runtime_resume which depends on CONFIG_PM_RUNTIME. Make
serial_omap_restore_context also compile conditionally.

if CONFIG_PM_RUNTIME is not defined below warn may be seen.

  LD      net/xfrm/built-in.o
drivers/tty/serial/omap-serial.c:1524: warning: 'serial_omap_restore_context' defined but not used
  CC      drivers/tty/vt/selection.o

Acked-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:11:06 -08:00
Shubhrajyoti D
3bc4f0d8f6 omap-serial :Make the suspend/resume functions depend on CONFIG_PM_SLEEP.
The macro SET_SYSTEM_SLEEP_PM_OPS  depends CONFIG_PM_SLEEP. The patch
    defines the suspend and resume functions for CONFIG_PM_SLEEP instead of
    CONFIG_SUSPEND.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2012-01-24 14:11:05 -08:00
David S. Miller
efc3dbc374 rds: Make rds_sock_lock BH rather than IRQ safe.
rds_sock_info() triggers locking warnings because we try to perform a
local_bh_enable() (via sock_i_ino()) while hardware interrupts are
disabled (via taking rds_sock_lock).

There is no reason for rds_sock_lock to be a hardware IRQ disabling
lock, none of these access paths run in hardware interrupt context.

Therefore making it a BH disabling lock is safe and sufficient to
fix this bug.

Reported-by: Kumar Sanghvi <kumaras@chelsio.com>
Reported-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-24 17:03:44 -05:00
Tony Lindgren
0215716083 pinctrl: free debugfs entries when unloading a pinmux driver
We were not cleaning up properly after unloading a pinmux
driver compiled as module.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-24 23:03:02 +01:00
Uwe Kleine-König
f9d41d7cb5 pinctrl: unbreak error messages
It's better to not line break error messages to allow easier grepping
for them even when the line gets >80 chars. Additionally some minor
reformating is done.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-24 22:47:46 +01:00
Uwe Kleine-König
f54367f9de Documentation/pinctrl: fix a few syntax errors in code examples
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-01-24 22:47:45 +01:00
Paul Gortmaker
36a1211970 netprio_cgroup.h: dont include module.h from other includes
A considerable effort was invested in wiping out module.h
from being present in all the other standard includes.  This
one leaked back in, but once again isn't strictly necessary,
so remove it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-24 16:42:26 -05:00
Russell King
171cf94ccb PCMCIA: fix sa1111 oops on remove
The sa1111 socket driver oopses when removed:

Unable to handle kernel NULL pointer dereference at virtual address 000003b0
pgd = c1b40000
[000003b0] *pgd=00000000
Internal error: Oops: 41b43005 [#1]
Modules linked in:
CPU: 0    Not tainted  (3.3.0-rc1+ #744)
PC is at pcmcia_remove+0x3c/0x60
LR is at pcmcia_remove+0x34/0x60

This is because we try to dereference a NULL 's' to obtain the next
pointer.  Fix this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-24 21:33:26 +00:00
Daniel Vetter
48467a9221 drm/i915: debugfs: show semaphore registers also on gen7
Corresponding changes to improve our error_state are pending
some other patches to clean up things first.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-24 13:30:26 -08:00
Daniel Vetter
075edca43b drm/i915: allow userspace forcewake references also on gen7
We need this to correctly access registers in the gt power well from
userspace.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-24 13:29:25 -08:00
Eric Anholt
04115a9dee drm/i915: Re-enable gen7 RC6 and GPU turbo after resume.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: stable@vger.kernel.org
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-24 13:25:10 -08:00
Eric Anholt
fff24e21e1 drm/i915: Correct debugfs printout for RC1e.
We had two things in a row claiming to be RC6.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-01-24 13:23:11 -08:00
Jesper Dangaard Brouer
c452ed7077 net: flow_dissector.c missing include linux/export.h
The file net/core/flow_dissector.c seems to be missing
including linux/export.h.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-24 16:03:33 -05:00