It works like this:
  Open the file
  Read all the contents.
  Call poll requesting POLLERR or POLLPRI (so select/exceptfds works)
  When poll returns,
     close the file and go to top of loop.
   or lseek to start of file and go back to the 'read'.

Events are signaled by an object manager calling
   sysfs_notify(kobj, dir, attr);

If the dir is non-NULL, it is used to find a subdirectory which
contains the attribute (presumably created by sysfs_create_group).

This has a cost of one int  per attribute, one wait_queuehead per kobject,
one int per open file.

The name "sysfs_notify" may be confused with the inotify
functionality.  Maybe it would be nice to support inotify for sysfs
attributes as well?

This patch also uses sysfs_notify to allow /sys/block/md*/md/sync_action
to be pollable
Signed-off-by: NNeil Brown <neilb@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

For easily getting fairly good accessibility, the TTY cursor should
always be left at the focus location.  This patch fixes the checklist by
just having the list refreshed after the dialog box (hence the cursor
position remains in the list).
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/mszeredi/fuse:
  [fuse] Direct I/O  should not use fuse_reset_request
  [fuse] Don't init request twice
  [fuse] Fix accounting the number of waiting requests
  [fuse] fix deadlock between fuse_put_super() and request_end()

* 'tee' of git://brick.kernel.dk/data/git/linux-2.6-block:
  [PATCH] splice: add support for sys_tee()
  [PATCH] splice: pass offset around for ->splice_read() and ->splice_write()

This reverts most of commit 30e0fca6.
It broke the case of non-leader MT exec when ptraced.
I think the bug it was intended to fix was already addressed by commit
788e05a6.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Acked-by: NOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This is two distinct changes.
 - Not changing our real parents.
 - Not changing our ptrace parents.

Not changing our real parents is trivially correct because both tasks
have the same real parents as they are part of a thread group.  Now that
we demote the leader to a thread there is no longer any reason to change
it's parentage.

Not changing our ptrace parents is a user visible change if someone
looks hard enough.  I don't think user space applications will care or
even notice.

In the practical and I think common case a debugger will have attached
to all of the threads using the same ptrace flags.  From my quick skim
of strace and gdb that appears to be the case.  Which if true means
debuggers will not notice a change.

Before this point we have already generated a ptrace event in do_exit
that reports the leaders pid has died so de_thread is visible to a
debugger.  Which means attempting to hide this case by copying flags
around appears excessive.

By not doing anything it avoids all of the weird locking issues between
de_thread and ptrace attach, and removes one case from consideration for
fixing the ptrace locking.

This only addresses Oleg's first concern with ptrace_attach, that of the
problems caused by reparenting.  Oleg's second concern is essentially a
race between ptrace_attach and release_task that causes an oops when we
get to force_sig_specific.  There is nothing special about de_thread
with respect to that race.
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Make show_mem() skip holes in a pgdat
  [IA64] ia64_wait_for_slaves() incorrectly reports MCA

This patch modifies ia64's show_mem() to walk the vmem_map page tables and
rapidly skip forward across regions where the page tables are missing.
This prevents the pfn_valid() check from causing numerous unnecessary
page faults.

Without this patch on a 512 node 512 cpu system where every node has four
memory holes, the show_mem() call takes 1 hour 18 minutes.  With this
patch, it takes less than 3 seconds.
Signed-off-by: NRobin Holt <holt@sgi.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>

ia64_wait_for_slaves() was changed in 2.6.17-rc1 to report the slave
state.  It incorrectly assumes that all slaves are for MCA, but
ia64_wait_for_slaves() is also called from the INIT monarch handler.
The existing message is very misleading, so correct it.
Signed-off-by: NKeith Owens <kaos@sgi.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>

By calling send_sig do_SAK is recursively taking the
tasklist_lock, which is silly.

In addition I just audited the kernel and this was the only
place where tasklist_lock is taken inside of task_lock.

So this one line change is a general worthwhile cleanup and
it increases our options on how to fix the ptrace_attach races.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mthca: Fix max_srq_sge returned by ib_query_device for Tavor devices
  IB/cache: Use correct pointer to calculate size
  IPoIB: Use spin_lock_irq() instead of spin_lock_irqsave()
  IPoIB: Close race in ipoib_flush_paths()
  IB/mthca: Disable tuning PCI read burst size
  IPoIB: Make send and receive queue sizes tunable
  IPoIB: Wait for join to finish before freeing mcast struct
  IB: simplify static rate encoding
  IPoIB: Consolidate private neighbour data handling
  IB/srp: Fix memory leak in options parsing
  IB/mthca: Always build debugging code unless CONFIG_EMBEDDED=y
  IPoIB: Always build debugging code unless CONFIG_EMBEDDED=y
  IB/mad: fix oops in cancel_mads

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [PATCH] sata_mv: properly print HC registers

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
  [PATCH] Use pci_set_consistent_dma_mask in ixgb driver
  [PATCH] sky2: bad memory reference on dual port cards
  [PATCH] mv643xx_eth: Fix tx_timeout to only conditionally wake tx queue
  [PATCH] mv643xx_eth: Always free completed tx descs on tx interrupt
  [PATCH] net drivers: fix section attributes for gcc
  [PATCH] remove drivers/net/hydra.h
  [PATCH] drivers/net/via-rhine.c: make a function static
  [netdrvr b44] trim trailing whitespace
  [PATCH] b44: increase version to 1.00
  [PATCH] b44: disable default tx pause
  [PATCH] via-rhine: execute bounce buffers code on Rhine-I only
  [PATCH] network: axnet_cs.c: add missing 'PRIV' in ei_rx_overrun
  [PATCH] dlink pci cards using wrong driver

The ixgb driver is using pci_alloc_consistent, thus is should also use
pci_set_consistent_dma_mask.  This allows the driver to work on SGI
systems.

In case of an error during probing it should also disable the device again.
Signed-off-by: NAndreas Schwab <schwab@suse.de>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Sky2 driver will oops referencing bad memory if used on
a dual port card.  The problem is accessing past end of
MIB counter space.

Applies for both 2.6.17 and 2.6.16 (with fuzz)
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

After resetting the hardware on a tx_timeout, call netif_wake_queue()
only if we have free tx descriptors.

Also, attempt to recover if mv643xx_eth_start_xmit() is called when
there are fewer free tx descriptors than expected.

The BUG_ON() call we are replacing was hit on a tx_timeout that
called netif_wake_queue(), indirectly via netif_device_attach(),
even though we did not have enough free tx descriptors.
Signed-off-by: NDale Farnsworth <dale@farnsworth.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Fix the tx interrupt handler to free completed tx descriptors even
when NAPI is enabled.  Otherwise, the tx queue would fill up resulting
in poor performance and "NETDEV WATCHDOG: <iface>: transmit timed out"
messages.
Signed-off-by: NBrent Cook <bcook@bpointsys.com>
Signed-off-by: NDale Farnsworth <dale@farnsworth.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

If CONFIG_HOTPLUG=n, gcc doesn't like some __initdata to be const (rodata)
and other __initdata not const, so make the non-const __initdata const.

gcc errors:
drivers/net/bnx2.c:66: error: version causes a section type conflict
drivers/net/starfire.c:338: error: version causes a section type conflict
drivers/net/typhoon.c:137: error: version causes a section type conflict
drivers/net/natsemi.c:241: error: version causes a section type conflict
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Remove drivers/net/hydra.h which is both unused and covered by a 4 clause
BSD licence (not by the UCB).
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-By: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NRoger Luethi <rl@hellgate.ch>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Currently it crashes when trying to dump the registers.  This is an obvious
one-liner fix I suppose.
Signed-off-by: NDan Aloni <da-x@monatomic.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: NJeff Garzik <jeff@garzik.org>

Disable default tx pause frame support.
The b44 controller has a bug that generates excessive tx pause
frames.
Signed-off-by: NGary Zambrano <zambrano@broadcom.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Patch suggested by Yang Wu (pin xue <pinxue@gmail.com>).
Signed-off-by: NRoger Luethi <rl@hellgate.ch>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Signed-off-by: komurojun-mbn@nifty.com
Signed-off-by: NJeff Garzik <jeff@garzik.org>

This patch fixes the problem of some Dlink cards picking the wrong
driver.  It looks like these cards use Yukon 1 chipset, not Yukon 2.
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The driver allocates SRQ WQEs size with a power of 2 size both for
Tavor and for memfree. For Tavor, however, the hardware only requires
the WQE size to be a multiple of 16, not a power of 2, and the max
number of scatter-gather allowed is reported accordingly by the
firmware (and this is the value currently returned by
ib_query_device() and ibv_query_device()).

If the max number of scatter/gather entries reported by the FW is used
when creating an SRQ, the creation will fail for Tavor, since the
required WQE size will be increased to the next power of 2, which
turns out to be larger than the device permitted max WQE size (which
is not a power of 2).

This patch reduces the reported SRQ max wqe size so that it can be used
successfully in creating an SRQ on Tavor HCAs.
Signed-off-by: NJack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [ISDN]: Static overruns in drivers/isdn/i4l/isdn_ppp.c
  [WAN]: Remove broken and unmaintained Sangoma drivers.
  [BRIDGE] ebtables: fix allocation in net/bridge/netfilter/ebtables.c
  [DCCP]: Fix leak in net/dccp/ipv4.c
  [BRIDGE]: receive link-local on disabled ports.
  [IPv6] reassembly: Always compute hash under the fragment lock.

Unregister the platform device again if the probe was unsuccessful.

This restores the behaviour of not loading the driver on probe() failure.
Signed-off-by: NRene Herman <rene.herman@keyaccess.nl>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Continue with the next one on error from device registration.

This would seem the correct thing to do, even if it's not the probe()
error that we're getting.
Signed-off-by: NRene Herman <rene.herman@keyaccess.nl>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: PCM Midlevel

This patch makes the needlessly global snd_pcm_format_name() static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: AC97 Codec

Added the missing entry for VIA VT1618 codec.
No particular patch is needed, though.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: HDA Codec driver

Add the model entry to support of ASUS U5A with AD1986A codec.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: au88x0 driver

since idx is used as an index for vortex_pcm_prettyname[VORTEX_PCM_LAST],
it should not be equal to VORTEX_PCM_LAST. This fixes coverity bug id #572
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: au88x0 driver

Removed all use of __devinit/__devexit and init.h from headers.  Any
attributes given in the prototype but not in the function definition have
been moved to the definition.

An exception is vortex_eq_free: I removed the __devexit attribute because
vortex_eq_free is called from vortex_core_shutdown, and
vortex_core_shutdown may be called from __devinit snd_vortex_create.

Compile tested with allyesconfig and allmodconfig.
Signed-off-by: NDale Sedivec <dale@codefu.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: HDA Codec driver

This patch adds the entry for the 5-stack pin-config for the STAC
chip on the Intel D945Pvs board with subdevice id 0x0707.

With this patch against 1.0.11rc4 in the linux kernel 2.6.17-rc1, I'm
able to successfully output over the optical port and analog ports.
Signed-off-by: NAshley Clark <aclark@ghoti.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: HDA Codec driver

This adds the support for HP Compaq Presario B2800 laptop with AD1986A codec.
Signed-off-by: NCoywolf Qi Hunt <qiyong@freeforge.net>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: EMU10K1/EMU10K2 driver
Signed-off-by: NJames Courtier-Dutton <James@superbug.co.uk>

Modules: VIA82xx driver

Added a dxs_support entry for ECS K8T890-A board.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>