Commit graph

298565 commits

Author SHA1 Message Date
Neil Horman
5e70c4c43e [SCSI] fcoe: Ensure fcoe_recv_frame is always called in process context
commit 859b7b649a introduced the ability to call
fcoe_recv_frame in softirq context.  While this is beneficial to performance,
its not safe to do, as it breaks the serialization of access to the lport
structure (i.e. when an fcoe interface is being torn down, theres no way to
serialize the teardown effort with the completion of receieve operations
occuring in softirq context.  As a result, lport (and other) data structures can
be read and modified in parallel leading to corruption.  Most notable is the
vport list, which is protected by a mutex, that will cause a panic if a softirq
receive while said mutex is locked.  Additionaly, the ema_list, discussed here:

http://lists.open-fcoe.org/pipermail/devel/2012-February/011947.html

Can be corrupted if a list traversal occurs in softirq context at the same time
as a list delete in process context.  And generally the lport state variables
will not be stable, and may lead to unpredictable results.

The most direct fix is to remove the bits from the above commit that allowed
fcoe_recv_frame to be called in softirq context.  We just force all frames to be
handled by the per-cpu rx threads.  This will allow the fcoe_if_destroy's use of
fcoe_percpu_clean to function properly, ensuring that no frames are being
received while the lport is being torn down.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-03-28 09:02:26 +01:00
Santosh Nayak
b08c1856b4 [SCSI] pm8001: Use spin_lock_irqsave() for task_state.
Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-03-28 08:58:09 +01:00
Jeremy Fitzhardinge
136d249ef7 x86/ioapic: Add io_apic_ops driver layer to allow interception
Xen dom0 needs to paravirtualize IO operations to the IO APIC,
so add a io_apic_ops for it to intercept.  Do this as ops
structure because there's at least some chance that another
paravirtualized environment may want to intercept these.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: jwboyer@redhat.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/1332385090-18056-2-git-send-email-konrad.wilk@oracle.com
[ Made all the affected code easier on the eyes ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-03-28 09:49:29 +02:00
Guennadi Liakhovetski
4eb80146f8 sh: ecovec: switch SDHI controllers to card polling
Polling for card hotplug events is a better option than using SDHI native
hotplug interrupt, because the latter option forces the controller to stay
permanently powered up and enabled.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 16:28:25 +09:00
Paul Mundt
9b2ffa8d04 sh: Avoid exporting unimplemented syscalls.
Now that userspace is making use of kernel-provided sanitized headers for
working out supported interfaces, we need to be a bit more diligent with
matching the syscall definitions with their actual wiring/support state.

In theory it shouldn't hurt anything since sys_ni_syscall will ultimately
do the right thing, but there's also not much need to lie about legacy
x86 syscalls that we've never supported.

This tightens things up a bit for uClibc at least.

Suggested-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 16:20:20 +09:00
David S. Miller
973db5696e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net 2012-03-28 03:01:48 -04:00
Don Skidmore
8e4f3250f4 ixgbe: update version number
Update the driver version number to better match version of out of tree
driver that has similar functionality.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-03-27 23:46:28 -07:00
Don Skidmore
70e5576cb0 ixgbe: fix typo in enumeration name
This was pointed out to me by Xiaojun Zhang on Source Forge.

CC: Xiaojun Zhang <zhangxiaojun@sourceforge.net>
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-03-27 23:34:54 -07:00
stephen hemminger
b3f4d5990b intel: make wired ethernet driver message level consistent (rev2)
Dan Carpenter noticed that ixgbevf initial default was different than
the rest. But the problem is broader than that, only one Intel driver (ixgb)
was doing it almost right.

The convention for default debug level should be consistent among
Intel drivers and follow established convention.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-03-27 23:29:22 -07:00
Michal Simek
8cf662ed3e microblaze: Fix __futex_atomic_op macro register usage
Old Microblaze toolchain supported "b" contstrains for
all register but it always points to general purpose reg.
New Microblaze toolchain is more strict in this
and general purpose register should be used there "r".

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-03-28 08:28:24 +02:00
Shimoda, Yoshihiro
10a068f27a sh: add platform_device for RSPI in setup-sh7757
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 14:31:03 +09:00
Thomas Schwinge
bfc906d885 SH: pci-sh7780: enable big-endian operation.
If in big-endian mode, switch the PCI bus, too.

Tested on both litte-endian and big-endian sh7785lcr.

Signed-off-by: Thomas Schwinge <thomas@codesourcery.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 14:28:30 +09:00
Yoshii Takashi
49d4bcaddc serial: sh-sci: fix a race of DMA submit_tx on transfer
When DMA is enabled, sh-sci transfer begins with
 uart_start()
  sci_start_tx()
    if (cookie_tx < 0) schedule_work()
Then, starts DMA when wq scheduled, -- (A)
 process_one_work()
  work_fn_rx()
   cookie_tx = desc->submit_tx()
And finishes when DMA transfer ends, -- (B)
 sci_dma_tx_complete()
  async_tx_ack()
  cookie_tx = -EINVAL
  (possible another schedule_work())

This A to B sequence is not reentrant, since controlling variables
(for example, cookie_tx above) are not queues nor lists. So, they
must be invoked as A B A B..., otherwise results in kernel crash.

To ensure the sequence, sci_start_tx() seems to test if cookie_tx < 0
(represents "not used") to call schedule_work().
But cookie_tx will not be set (to a cookie, also means "used") until
in the middle of work queue scheduled function work_fn_tx().

This gap between the test and set allows the breakage of the sequence
under the very frequently call of uart_start().
Another gap between async_tx_ack() and another schedule_work() results
in the same issue, too.

This patch introduces a new condition "cookie_tx == 0" just to mark
it is "busy" and assign it within spin-locked region to fill the gaps.

Signed-off-by: Takashi Yoshii <takashi.yoshii.zj@renesas.com>
Reviewed-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 14:26:05 +09:00
Nobuhiro Iwamatsu
ffe0e190f6 sh: dma: Collect up CHCR of SH7763, SH7764, SH7780 and SH7785
CHCR of SH7763, SH7764, SH7780 and SH7785 is constitution same as SH7757.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 14:21:36 +09:00
Nobuhiro Iwamatsu
9cdb81c7fa sh: dma: Collect up CHCR of SH7723 and SH7730
CHCR of SH7723 and SH7730 is constitution same as SH7724.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 14:21:35 +09:00
Paul Mundt
92072452f4 Merge branch 'common/intc-extension' into sh-latest 2012-03-28 13:55:00 +09:00
Paul Mundt
d1000edd5d Merge branch 'sh/cpufreq' into sh-latest 2012-03-28 13:54:49 +09:00
Nobuhiro Iwamatsu
344dd2f4c2 sh/next: Fix build fail by asm/system.h in asm/bitops.h
Other files are not done include definitely by asm/system.h made
include in asm/bitops.h.
This patch remove asm/system.h from asm/bitops.h.

-----
LANG=C make ARCH=sh CROSS_COMPILE=sh4-linux-gnu-
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
make[1]: `include/generated/machtypes.h' is up to date.
  CC      arch/sh/kernel/asm-offsets.s
In file included from include/asm-generic/getorder.h:7,
               from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/page.h:187,
               from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/mmu.h:38,
               from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/system_32.h:5,
               from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/system.h:179,
               from /home/iwamatsu/work/kernel/sh-2.6-devel/arch/sh/include/asm/bitops.h:10,
               from include/linux/bitops.h:22,
               from include/linux/thread_info.h:52,
               from include/linux/preempt.h:9,
               from include/linux/spinlock.h:50,
               from include/linux/mmzone.h:7,
               from include/linux/gfp.h:4,
               from include/linux/mm.h:8,
               from arch/sh/kernel/asm-offsets.c:13:
include/linux/log2.h: In function '__ilog2_u32':
include/linux/log2.h:34: error: implicit declaration of function 'fls'
include/linux/log2.h: In function '__ilog2_u64':
include/linux/log2.h:42: error: implicit declaration of function 'fls64'
include/linux/log2.h: In function '__roundup_pow_of_two':
include/linux/log2.h:63: error: implicit declaration of function 'fls_long'
-----

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-03-28 13:53:29 +09:00
Paul Mundt
18af30e259 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into sh-latest 2012-03-28 13:53:10 +09:00
Olof Johansson
1f5b7dcfda ARM: Non-critical bug fixes
Simple bug fixes that were not considered important enough for inclusion
 into 3.3. One bug fix was originally intended for 3.3 but accidentally
 got missed, but is not marked stable because it should only get
 backported once later fixes also make it into v3.4.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge branch 'fixes-non-critical' into next/drivers2

fixes-non-critical has already been merged upstream, and there are a
handful of annoying context conflicts that it makes sense to resolve
before sending up. Part of this is because there was parallel development
going on between more urgent fixes and general driver fixups, it should
settle down once the lpc32xx platform reaches a more steady state.

Conflicts:
	arch/arm/mach-lpc32xx/clock.c
	arch/arm/mach-lpc32xx/common.h

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-03-27 21:24:03 -07:00
Eric Dumazet
094b5855bf cdc-phonet: fix skb truesize underestimation
Now skb_add_rx_frag() has a truesize parameter, we can fix cdc-phonet to
properly account truesize of each fragment : a full page.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:50:55 -04:00
Eric Dumazet
21dcda6083 f_phonet: fix skb truesize underestimation
Now skb_add_rx_frag() has a truesize parameter, we can fix f_phonet to
properly account truesize of each fragment : a full page.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:50:54 -04:00
Eric Dumazet
09e79d6ea6 eql: dont rely on HZ=100
HZ is more likely to be 1000 these days.

timer handlers are run from softirq, no need to disable bh

skb priority 1 is TC_PRIO_FILLER

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:45:26 -04:00
Dan Carpenter
819a100846 mISDN: array underflow in open_bchannel()
There are two channels here.  User space starts counting channels at one
but in the kernel we start at zero.  If the user passes in a zero
channel that's invalid and could lead to memory corruption.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:42:32 -04:00
Dmitry Kravkov
c54e9bd38a bnx2x: fix vector traveling while looking for an empty entry
Fixes the bug that may prevent from mac to be configured,
while there is an empty slot for it.

Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:41:34 -04:00
Yuval Mintz
452427b015 bnx2x: previous driver unload revised
The flow in which the bnx2x driver starts after a previous driver
has been terminated in an 'unclean' manner has several bugs and
FW risks, which makes it possible for the driver to fail after
boot-from-SAN or kdump.
This patch contains a revised flow which performs a safer
initialization, solving the possible crash scenarios.
Notice this patch contains lines with over 80 characters, as it
keeps print-strings in a single line.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:41:34 -04:00
Guan Xin
a2daf26310 USB: Add Motorola Rokr E6 Id to the USBNet driver "zaurus"
Added Vendor/Device Id of Motorola Rokr E6 (22b8:6027) so it can be
recognized by the "zaurus" USBNet driver.
Applies to Linux 3.2.13 and 2.6.39.4.
Signed-off-by: Guan Xin <guanx.bac@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:39:46 -04:00
Nobuhiro Iwamatsu
f0e81fecd4 net: sh_eth: Add support SH7734
Add define of SH7734 register and sh_eth_reset_hw_crc function.

V3: Rebase net/HEAD.
V2: Do not split line of #if defined.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:38:08 -04:00
Phil Sutter
b744089280 wimax: i2400m-usb - use a private struct ethtool_ops
This way the USB variant of the driver uses usb_make_path in order to
provide bus-info compatible to other USB drivers (like e.g. asix.c).

Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:30:09 -04:00
Phil Sutter
4eee6a3a04 wimax: i2400m - prevent a possible kernel bug due to missing fw_name string
This happened on a machine with a custom hotplug script calling nameif,
probably due to slow firmware loading. At the time nameif uses ethtool
to gather interface information, i2400m->fw_name is zero and so a null
pointer dereference occurs from within i2400m_get_drvinfo().

Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-27 22:30:09 -04:00
David S. Miller
7dd30d447b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2012-03-27 22:15:01 -04:00
Trond Myklebust
14977489ff NFSv4: Minor cleanups for nfs4_handle_exception and nfs4_async_handle_error
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2012-03-27 21:53:14 -04:00
Trond Myklebust
e59d27e05a NFSv4.1: Fix layoutcommit error handling
Firstly, task->tk_status will always return negative error values,
so the current tests for 'NFS4ERR_DELEG_REVOKED' etc. are all being
ignored.
Secondly, clean up the code so that we only need to test
task->tk_status once!

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
2012-03-27 21:53:14 -04:00
Trond Myklebust
05e9cfb408 NFSv4: Fix two infinite loops in the mount code
We can currently loop forever in nfs4_lookup_root() and in
nfs41_proc_secinfo_no_name(), if the first iteration returns a
NFS4ERR_DELAY or something else that causes exception.retry to get
set.

Reported-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
2012-03-27 21:53:14 -04:00
Jiri Pirko
52f5509fe8 e1000: fix vlan processing regression
This patch fixes a regression introduced by commit "e1000: do vlan
cleanup (799d531)".

Apparently some e1000 chips (not mine) are sensitive about the order of
setting vlan filter and vlan stripping/inserting functionality. So this
patch changes the order so it's the same as before vlan cleanup.

Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Tested-by: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-03-27 18:43:55 -07:00
Linus Torvalds
6658a6991c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches part 2 from Martin Schwidefsky:
 "Some minor improvements and one additional feature for the 3.4 merge
  window: Hendrik added perf support for the s390 CPU counters."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  [S390] register cpu devices for SMP=n
  [S390] perf: add support for s390x CPU counters
  [S390] oprofile: Allow multiple users of the measurement alert interrupt
  [S390] qdio: log all adapter characteristics
  [S390] Remove unncessary export of arch_pick_mmap_layout
2012-03-27 18:36:38 -07:00
Linus Torvalds
fa453a625d Merge branch 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML changes from Richard Weinberger:
 "Mostly bug fixes and cleanups"

* 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (35 commits)
  um: Update defconfig
  um: Switch to large mcmodel on x86_64
  MTD: Relax dependencies
  um: Wire CONFIG_GENERIC_IO up
  um: Serve io_remap_pfn_range()
  Introduce CONFIG_GENERIC_IO
  um: allow SUBARCH=x86
  um: most of the SUBARCH uses can be killed
  um: deadlock in line_write_interrupt()
  um: don't bother trying to rebuild CHECKFLAGS for USER_OBJS
  um: use the right ifdef around exports in user_syms.c
  um: a bunch of headers can be killed by using generic-y
  um: ptrace-generic.h doesn't need user.h
  um: kill HOST_TASK_PID
  um: remove pointless include of asm/fixmap.h from asm/pgtable.h
  um: asm-offsets.h might as well come from underlying arch...
  um: merge processor_{32,64}.h a bit...
  um: switch close_chan() to struct line
  um: race fix: initialize delayed_work *before* registering IRQ
  um: line->have_irq is never checked...
  ...
2012-03-27 18:29:53 -07:00
Jeff Kirsher
cc3425cdc0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-03-27 18:29:26 -07:00
Linus Torvalds
30eebb54b1 Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze
Pull arch/microblaze fixes from Michal Simek

* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Handle TLB skip size dynamically
  microblaze: Introduce TLB skip size
  microblaze: Improve TLB calculation for small systems
  microblaze: Extend space for compiled-in FDT to 32kB
  microblaze: Clear all MSR flags on the first kernel instruction
  microblaze: Use node name instead of compatible string
  microblaze: Fix mapin_ram function
  microblaze: Highmem support
  microblaze: Use active regions
  microblaze: Show more detailed information about memory
  microblaze: Introduce fixmap
  microblaze: mm: Fix lowmem max memory size limits
  microblaze: mm: Use ZONE_DMA instead of ZONE_NORMAL
  microblaze: trivial: Fix typo fault in timer.c
  microblaze: Use vsprintf extention %pf with builtin_return_address
  microblaze: Add PVR version string for MB 8.20.b and 8.30.a
  microblaze: Fix makefile to work with latest toolchain
  microblaze: Fix typo in early_printk.c
2012-03-27 18:20:56 -07:00
Linus Torvalds
9e4db1c3ee Merge branch 'platforms' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM platform updates from Russell King:
 "This covers platform stuff for platforms I have a direct interest in
  (iow, I have the hardware).  Essentially:
   - as we no longer support any other Acorn platforms other than RiscPC
     anymore, we can collect all that code into mach-rpc.
   - convert Acorn expansion card stuff to use IRQ allocation functions,
     and get rid of NO_IRQ from there.
   - cleanups to the ebsa110 platform to move some private stuff out of
     its header files.
   - large amount of SA11x0 updates:
   - conversion of private DMA implementation to DMA engine support
     (this actually gives us greater flexibility in drivers over the old
     API.)
   - re-worked ucb1x00 updates - convert to genirq, remove sa11x0
     dependencies, fix various minor issues
   - move platform specific sa11x0 framebuffer data into platform files
     in arch/arm instead of keeping this in the driver itself
   - update sa11x0 IrDA driver for DMA engine, and allow it to use DMA
     for SIR transmissions as well as FIR
   - rework sa1111 support for genirq, and irq allocation
   - fix sa1111 IRQ support so it works again
   - use sparse IRQ support

  After this, I have one more pull request remaining from my current
  set, which I think is going to be the most problematical as it
  generates 8 conflicts."

Fixed up the trivial conflict in arch/arm/mach-rpc/Makefile as per
Russell.

* 'platforms' of git://git.linaro.org/people/rmk/linux-arm: (125 commits)
  ARM: 7343/1: sa11x0: convert to sparse IRQ
  ARM: 7342/2: sa1100: prepare for sparse irq conversion
  ARM: 7341/1: input: prepare jornada720 keyboard and ts for sa11x0 sparse irq
  ARM: 7340/1: rtc: sa1100: include mach/irqs.h instead of asm/irq.h
  ARM: sa11x0: remove unused DMA controller definitions
  ARM: sa11x0: remove old SoC private DMA driver
  USB: sa1111: add hcd .reset method
  USB: sa1111: add OHCI shutdown methods
  USB: sa1111: reorganize ohci-sa1111.c
  USB: sa1111: get rid of nasty printk(KERN_DEBUG "%s: ...", __FILE__)
  USB: sa1111: sparse and checkpatch cleanups
  ARM: sa11x0: don't static map sa1111
  ARM: sa1111: use dev_err() rather than printk()
  ARM: sa1111: cleanup sub-device registration and unregistration
  ARM: sa1111: only setup DMA for DMA capable devices
  ARM: sa1111: register sa1111 devices with dmabounce in bus notifier
  ARM: sa1111: move USB interface register definitions to ohci-sa1111.c
  ARM: sa1111: move PCMCIA interface register definitions to sa1111_generic.c
  ARM: sa1111: move PS/2 interface register definitions to sa1111p2.c
  ARM: sa1111: delete unused physical GPIO register definitions
  ...
2012-03-27 18:17:02 -07:00
Benjamin Herrenschmidt
1ce447b90f powerpc/perf: Fix instruction address sampling on 970 and Power4
970 and Power4 don't support "continuous sampling" which means that
when we aren't in marked instruction sampling mode (marked events),
SIAR isn't updated with the last instruction sampled before the
perf interrupt. On those processors, we must thus use the exception
SRR0 value as the sampled instruction pointer.

Those processors also don't support the SIPR and SIHV bits in MMCRA
which means we need some kind of heuristic to decide if SIAR values
represent kernel or user addresses.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:33:24 +11:00
Benjamin Herrenschmidt
cb52d8970e powerpc+sparc/vio: Modernize driver registration
This makes vio_register_driver() get the module owner & name at compile
time like PCI drivers do, and adds a name pointer directly in struct
vio_driver to avoid having to explicitly initialize the embedded
struct device.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
2012-03-28 11:33:24 +11:00
Stephen Rothwell
1d9a473150 powerpc: Random little legacy iSeries removal tidy ups
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:33:23 +11:00
Stephen Rothwell
7ba3e4f587 powerpc: Remove NO_IRQ_IGNORE
Now that legacy iSeries is gone, this is no longer used.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:32:01 +11:00
Anton Blanchard
9012899781 powerpc/pseries: Cut down on enthusiastic use of defines in RAS code
So many defines for such a little file. Most of them can go.

Also remove the single entry changelog, we have git for that.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:32:01 +11:00
Anton Blanchard
cc8b526366 powerpc/pseries: Clean up ras_error_interrupt code
The RAS error interrupt is no longer used but we may as well
mirror the changes we made to the EPOW interrupt.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:32:00 +11:00
Anton Blanchard
6f43747f6a powerpc/pseries: Remove RTAS_POWERMGM_EVENTS
IBM bit 2 in the rtas event-scan and check-exception calls is
marked reserved in the PAPR, so remove it from our RAS code.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:32:00 +11:00
Anton Blanchard
587f83e8dd powerpc/pseries: Use rtas_get_sensor in RAS code
We have rtas_get_sensor so we may as well use it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:31:59 +11:00
Anton Blanchard
55fc0c5617 powerpc/pseries: Parse and handle EPOW interrupts
We have code to take environmental and power warning (EPOW)
interrupts but it simply prints a terse error message:

EPOW <0x6240040000000b8 0x0 0x0>

which tells us nothing about what happened. Even worse, if we
don't correctly respond to the interrupt we may get terminated
by firmware.

Add code to printk some useful information when we get EPOW events.
We want to make it clear that we have an error, that it was
reported by firmware and that the RTAS error log will have more
detailed information. eg:

	Ambient temperature too high reported by firmware.
	Check RTAS error log for details

Depending on the error encountered, we now issue an immediate or
an orderly power down.

Move initialization of the EPOW interrupt earlier in boot since we
want to respond to them as early as possible.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:31:59 +11:00
Anton Blanchard
6431f20879 powerpc: Make function that parses RTAS error logs global
The IO event interrupt code has a function that finds specific
sections in an RTAS error log. We want to use it in the EPOW
code so make it global.

Rename things to make it less cryptic:

find_xelog_section() -> get_pseries_errorlog()
struct pseries_elog_section -> struct pseries_errorlog

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-03-28 11:31:58 +11:00