Linus Torvalds [Mon, 30 Apr 2007 15:14:42 +0000 (08:14 -0700)]
Merge /pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
[IPV4] SNMP: Support OutMcastPkts and OutBcastPkts
[IPV4] SNMP: Support InMcastPkts and InBcastPkts
[IPV4] SNMP: Support InTruncatedPkts
[IPV4] SNMP: Support InNoRoutes
[SNMP]: Add definitions for {In,Out}BcastPkts
[TCP] FRTO: RFC4138 allows Nagle override when new data must be sent
[TCP] FRTO: Delay skb available check until it's mandatory
[XFRM]: Restrict upper layer information by bundle.
[TCP]: Catch skb with S+L bugs earlier
[PATCH] INET : IPV4 UDP lookups converted to a 2 pass algo
[L2TP]: Add the ability to autoload a pppox protocol module.
[SKB]: Introduce skb_queue_walk_safe()
[AF_IUCV/IUCV]: smp_call_function deadlock
[IPV6]: Fix slab corruption running ip6sic
[TCP]: Update references in two old comments
[XFRM]: Export SPD info
[IPV6]: Track device renames in snmp6.
[SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage.
[NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats.
[NETPOLL]: Remove CONFIG_NETPOLL_RX
...
Linus Torvalds [Mon, 30 Apr 2007 15:12:39 +0000 (08:12 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block:
[PATCH] elevator: elv_list_lock does not need irq disabling
[BLOCK] Don't pin lots of memory in mempools
cfq-iosched: speedup cic rb lookup
ll_rw_blk: add io_context private pointer
cfq-iosched: get rid of cfqq hash
cfq-iosched: tighten queue request overlap condition
cfq-iosched: improve sync vs async workloads
cfq-iosched: never allow an async queue idling
cfq-iosched: get rid of ->dispatch_slice
cfq-iosched: don't pass unused preemption variable around
cfq-iosched: get rid of ->cur_rr and ->cfq_list
cfq-iosched: slice offset should take ioprio into account
[PATCH] cfq-iosched: style cleanups and comments
cfq-iosched: sort IDLE queues into the rbtree
cfq-iosched: sort RT queues into the rbtree
[PATCH] cfq-iosched: speed up rbtree handling
cfq-iosched: rework the whole round-robin list concept
cfq-iosched: minor updates
cfq-iosched: development update
cfq-iosched: improve preemption for cooperating tasks
Linus Torvalds [Mon, 30 Apr 2007 15:10:12 +0000 (08:10 -0700)]
Merge branch 'for-2.6.22' of git://git./linux/kernel/git/paulus/powerpc
* 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (255 commits)
[POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c
[POWERPC] remove kernel module option for booke wdt
[POWERPC] Avoid putting cpu node twice
[POWERPC] Spinlock initializer cleanup
[POWERPC] ppc4xx_sgdma needs dma-mapping.h
[POWERPC] arch/powerpc/sysdev/timer.c build fix
[POWERPC] get_property cleanups
[POWERPC] Remove the unused HTDMSOUND driver
[POWERPC] cell: cbe_cpufreq cleanup and crash fix
[POWERPC] Declare enable_kernel_spe in a header
[POWERPC] Add dt_xlate_addr() to bootwrapper
[POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE
[POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards.
[POWERPC] Add sane defaults for Xilinx EDK generated xparameters files
[POWERPC] Add uartlite boot console driver for the zImage wrapper
[POWERPC] Stop using ppc_sys for Xilinx Virtex boards
[POWERPC] New registration for common Xilinx Virtex ppc405 platform devices
[POWERPC] Merge common virtex header files
[POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform
[POWERPC] Clean up cpufreq Kconfig dependencies
...
Mitsuru Chinen [Mon, 30 Apr 2007 07:48:20 +0000 (00:48 -0700)]
[IPV4] SNMP: Support OutMcastPkts and OutBcastPkts
A transmitted IP multicast datagram should be counted as OutMcastPkts.
By the same token, a transmitted IP broadcast datagram should be
counted as OutBcastPkts.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mitsuru Chinen [Mon, 30 Apr 2007 07:48:10 +0000 (00:48 -0700)]
[IPV4] SNMP: Support InMcastPkts and InBcastPkts
A received IP multicast datagram should be counted as InMcastPkts.
By the same token, a received IP broadcast datagram should be
counted as InBcastPkts.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mitsuru Chinen [Mon, 30 Apr 2007 07:46:30 +0000 (00:46 -0700)]
[IPV4] SNMP: Support InTruncatedPkts
An IP datagram which is being discarded because the datagram frame
didn't carry enough data should be counted as InTruncatedPkts.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mitsuru Chinen [Mon, 30 Apr 2007 07:45:49 +0000 (00:45 -0700)]
[IPV4] SNMP: Support InNoRoutes
An IP datagram which is being discarded because of no routes in the
forwarding path should be counted as InNoRoutes.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mitsuru Chinen [Mon, 30 Apr 2007 07:45:02 +0000 (00:45 -0700)]
[SNMP]: Add definitions for {In,Out}BcastPkts
The updated IP-MIB RFC (RFC4293) specifys new objects, InBcastPkts
and OutBcastPkts. This adds definitions for them.
Signed-off-by: Mitsuru Chinen <mitch@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Mon, 30 Apr 2007 07:42:20 +0000 (00:42 -0700)]
[TCP] FRTO: RFC4138 allows Nagle override when new data must be sent
This is a corner case where less than MSS sized new data thingie
is awaiting in the send queue. For F-RTO to work correctly, a
new data segment must be sent at certain point or F-RTO cannot
be used at all. RFC4138 allows overriding of Nagle at that
point.
Implementation uses frto_counter states 2 and 3 to distinguish
when Nagle override is needed.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Mon, 30 Apr 2007 07:39:55 +0000 (00:39 -0700)]
[TCP] FRTO: Delay skb available check until it's mandatory
No new data is needed until the first ACK comes, so no need to check
for application limitedness until then.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Masahide NAKAMURA [Mon, 30 Apr 2007 07:33:35 +0000 (00:33 -0700)]
[XFRM]: Restrict upper layer information by bundle.
On MIPv6 usage, XFRM sub policy is enabled.
When main (IPsec) and sub (MIPv6) policy selectors have the same
address set but different upper layer information (i.e. protocol
number and its ports or type/code), multiple bundle should be created.
However, currently we have issue to use the same bundle created for
the first time with all flows covered by the case.
It is useful for the bundle to have the upper layer information
to be restructured correctly if it does not match with the flow.
1. Bundle was created by two policies
Selector from another policy is added to xfrm_dst.
If the flow does not match the selector, it goes to slow path to
restructure new bundle by single policy.
2. Bundle was created by one policy
Flow cache is added to xfrm_dst as originated one. If the flow does
not match the cache, it goes to slow path to try searching another
policy.
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Mon, 30 Apr 2007 07:57:33 +0000 (00:57 -0700)]
[TCP]: Catch skb with S+L bugs earlier
SACKED_ACKED and LOST are mutually exclusive with SACK, thus
having their sum larger than packets_out is bug with SACK.
Eventually these bugs trigger traps in the tcp_clean_rtx_queue
with SACK but it's much more informative to do this here.
Non-SACK TCP, however, could get more than packets_out duplicate
ACKs which each increment sacked_out, so it makes sense to do
this kind of limitting for non-SACK TCP but not for SACK enabled
one. Perhaps the author had the opposite in mind but did the
logic accidently wrong way around? Anyway, the sacked_out
incrementer code for non-SACK already deals this issue before
calling sync_left_out so this trapping can be done
unconditionally.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 30 Apr 2007 07:26:00 +0000 (00:26 -0700)]
[PATCH] INET : IPV4 UDP lookups converted to a 2 pass algo
Some people want to have many UDP sockets, binded to a single port but
many different addresses. We currently hash all those sockets into a
single chain. Processing of incoming packets is very expensive,
because the whole chain must be examined to find the best match.
I chose in this patch to hash UDP sockets with a hash function that
take into account both their port number and address : This has a
drawback because we need two lookups : one with a given address, one
with a wildcard (null) address.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
James Chapman [Mon, 30 Apr 2007 07:21:02 +0000 (00:21 -0700)]
[L2TP]: Add the ability to autoload a pppox protocol module.
This patch allows a name "pppox-proto-nnn" to be used in modprobe.conf
to autoload a PPPoX protocol nnn.
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jens Axboe [Mon, 30 Apr 2007 07:09:27 +0000 (09:09 +0200)]
Merge branch 'cfq' into for-linus
Jens Axboe [Thu, 26 Apr 2007 12:41:53 +0000 (14:41 +0200)]
[PATCH] elevator: elv_list_lock does not need irq disabling
It's never grabbed from irq context, so just make it plain spin_lock().
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 2 Apr 2007 08:06:42 +0000 (10:06 +0200)]
[BLOCK] Don't pin lots of memory in mempools
Currently we scale the mempool sizes depending on memory installed
in the machine, except for the bio pool itself which sits at a fixed
256 entry pre-allocation.
There's really no point in "optimizing" this OOM path, we just need
enough preallocated to make progress. A single unit is enough, lets
scale it down to 2 just to be on the safe side.
This patch saves ~150kb of pinned kernel memory on a 32-bit box.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
James Chapman [Mon, 30 Apr 2007 07:07:31 +0000 (00:07 -0700)]
[SKB]: Introduce skb_queue_walk_safe()
This patch provides a method for walking skb lists while inserting or
removing skbs from the list.
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jens Axboe [Tue, 24 Apr 2007 19:23:53 +0000 (21:23 +0200)]
cfq-iosched: speedup cic rb lookup
We often lookup the same queue many times in succession, so cache
the last looked up queue to avoid browsing the rbtree.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 24 Apr 2007 19:17:33 +0000 (21:17 +0200)]
ll_rw_blk: add io_context private pointer
To be used by as/cfq as they see fit.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Vasily Tarasov [Wed, 25 Apr 2007 10:29:51 +0000 (12:29 +0200)]
cfq-iosched: get rid of cfqq hash
cfq hash is no more necessary. We always can get cfqq from io context.
cfq_get_io_context_noalloc() function is introduced, because we don't
want to allocate cic on merging and checking may_queue. In order to
identify sync queue we've used hash key = CFQ_KEY_ASYNC. Since hash is
eliminated we need to use other criterion: sync flag for queue is added.
In all places where we dig in rb_tree we're in current context, so no
additional locking is required.
Advantages of this patch: no additional memory for hash, no seeking in
hash, code is cleaner. But it is necessary now to seek cic in per-ioc
rbtree, but it is faster:
- most processes work only with few devices
- most systems have only few block devices
- it is a rb-tree
Signed-off-by: Vasily Tarasov <vtaras@openvz.org>
Changes by me:
- Merge into CFQ devel branch
- Get rid of cfq_get_io_context_noalloc()
- Fix various bugs with dereferencing cic->cfqq[] with offset other
than 0 or 1.
- Fix bug in cfqq setup, is_sync condition was reversed.
- Fix bug where only bio_sync() is used, we need to check for a READ too
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 20 Apr 2007 18:45:39 +0000 (20:45 +0200)]
cfq-iosched: tighten queue request overlap condition
For tagged devices, allow overlap of requests if the idle window
isn't enabled on the current active queue.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 23 Apr 2007 06:33:33 +0000 (08:33 +0200)]
cfq-iosched: improve sync vs async workloads
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Thu, 19 Apr 2007 12:32:26 +0000 (14:32 +0200)]
cfq-iosched: never allow an async queue idling
We don't enable it by default, don't let it get enabled during
runtime.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 23 Apr 2007 06:26:36 +0000 (08:26 +0200)]
cfq-iosched: get rid of ->dispatch_slice
We can track it fairly accurately locally, let the slice handling
take care of the rest.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 23 Apr 2007 06:25:00 +0000 (08:25 +0200)]
cfq-iosched: don't pass unused preemption variable around
We don't use it anymore in the slice expiry handling.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Thu, 19 Apr 2007 10:03:34 +0000 (12:03 +0200)]
cfq-iosched: get rid of ->cur_rr and ->cfq_list
It's only used for preemption now that the IDLE and RT queues also
use the rbtree. If we pass an 'add_front' variable to
cfq_service_tree_add(), we can set ->rb_key to 0 to force insertion
at the front of the tree.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 20 Apr 2007 12:18:00 +0000 (14:18 +0200)]
cfq-iosched: slice offset should take ioprio into account
Use the max_slice-cur_slice as the multipler for the insertion offset.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Thu, 26 Apr 2007 10:54:48 +0000 (12:54 +0200)]
[PATCH] cfq-iosched: style cleanups and comments
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 18 Apr 2007 18:13:32 +0000 (20:13 +0200)]
cfq-iosched: sort IDLE queues into the rbtree
Same treatment as the RT conversion, just put the sorted idle
branch at the end of the tree.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 18 Apr 2007 18:01:57 +0000 (20:01 +0200)]
cfq-iosched: sort RT queues into the rbtree
Currently CFQ does a linked insert into the current list for RT
queues. We can just factor the class into the rb insertion,
and then we don't have to treat RT queues in a special way. It's
faster, too.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Thu, 26 Apr 2007 10:53:50 +0000 (12:53 +0200)]
[PATCH] cfq-iosched: speed up rbtree handling
For cases where the rbtree is mainly used for sorting and min retrieval,
a nice speedup of the rbtree code is to maintain a cache of the leftmost
node in the tree.
Also spotted in the CFS CPU scheduler code.
Improved by Alan D. Brunelle <Alan.Brunelle@hp.com> by updating the
leftmost hint in cfq_rb_first() if it isn't set, instead of only
updating it on insert.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Fri, 20 Apr 2007 12:27:50 +0000 (14:27 +0200)]
cfq-iosched: rework the whole round-robin list concept
Drawing on some inspiration from the CFS CPU scheduler design, overhaul
the pending cfq_queue concept list management. Currently CFQ uses a
doubly linked list per priority level for sorting and service uses.
Kill those lists and maintain an rbtree of cfq_queue's, sorted by when
to service them.
This unfortunately means that the ionice levels aren't as strong
anymore, will work on improving those later. We only scale the slice
time now, not the number of times we service. This means that latency
is better (for all priority levels), but that the distinction between
the highest and lower levels aren't as big.
The diffstat speaks for itself.
cfq-iosched.c | 363 +++++++++++++++++---------------------------------
1 file changed, 125 insertions(+), 238 deletions(-)
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 17 Apr 2007 10:47:55 +0000 (12:47 +0200)]
cfq-iosched: minor updates
- Move the queue_new flag clear to when the queue is selected
- Only select the non-first queue in cfq_get_best_queue(), if there's
a substantial difference between the best and first.
- Get rid of ->busy_rr
- Only select a close cooperator, if the current queue is known to take
a while to "think".
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 25 Apr 2007 10:44:27 +0000 (12:44 +0200)]
cfq-iosched: development update
- Implement logic for detecting cooperating processes, so we
choose the best available queue whenever possible.
- Improve residual slice time accounting.
- Remove dead code: we no longer see async requests coming in on
sync queues. That part was removed a long time ago. That means
that we can also remove the difference between cfq_cfqq_sync()
and cfq_cfqq_class_sync(), they are now indentical. And we can
kill the on_dispatch array, just make it a counter.
- Allow a process to go into the current list, if it hasn't been
serviced in this scheduler tick yet.
Possible future improvements including caching the cfqq lookup
in cfq_close_cooperator(), so we don't have to look it up twice.
cfq_get_best_queue() should just use that last decision instead
of doing it again.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 14 Feb 2007 18:59:49 +0000 (19:59 +0100)]
cfq-iosched: improve preemption for cooperating tasks
When testing the syslet async io approach, I discovered that CFQ
sometimes didn't perform as well as expected. cfq_should_preempt()
needs to better check for cooperating tasks, so fix that by allowing
preemption of an equal priority queue if the recently queued request
is as good a candidate for IO as the one we are currently waiting for.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Paul Mackerras [Mon, 30 Apr 2007 03:03:39 +0000 (13:03 +1000)]
[POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c
Commit
404d5b185b4eb56d6fa2f7bd27833f8df1c38ce4 changed the definition
of dev_dbg in the !DEBUG case from being a #define to being a static
inline. There was code in drivers/ps3/vuart.c to do exactly that,
which fails to compile now. This fixes it by removing the redefinition,
as the redefinition is now superfluous.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Paul Mackerras [Mon, 30 Apr 2007 02:38:01 +0000 (12:38 +1000)]
Merge branch 'linux-2.6' into for-2.6.22
Dave Jiang [Fri, 13 Apr 2007 22:25:24 +0000 (08:25 +1000)]
[POWERPC] remove kernel module option for booke wdt
Remove option of making booke_wdt into a kernel module. This watchdog
cannot be disabled. No point being a kernel module.
Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
John Rigby [Fri, 6 Apr 2007 22:57:37 +0000 (08:57 +1000)]
[POWERPC] Avoid putting cpu node twice
Call of_find_node_by_type with NULL instead of np
so the cpu node does not get put twice.
This was causing kref_put warnings.
Signed-off-by: John Rigby <jrigby@freescale.com>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Thomas Gleixner [Sun, 29 Apr 2007 16:10:39 +0000 (16:10 +0000)]
[POWERPC] Spinlock initializer cleanup
Use DEFINE_SPINLOCK instead of initializing spinlocks to
SPIN_LOCK_UNLOCKED, since DEFINE_SPINLOCK is better for lockdep.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Andrew Morton [Thu, 26 Apr 2007 07:07:05 +0000 (00:07 -0700)]
[POWERPC] ppc4xx_sgdma needs dma-mapping.h
For dma_alloc_*()
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Srinivasa Ds [Thu, 26 Apr 2007 07:07:04 +0000 (00:07 -0700)]
[POWERPC] arch/powerpc/sysdev/timer.c build fix
arch/powerpc/sysdev/timer.c:51: error: variable `timer_sysclass' has
initializer but incomplete type
arch/powerpc/sysdev/timer.c:52: error: unknown field `resume' specified in initializer
<etc>
Signed-off-by: Srinivasa Ds <srinivasa@in.ibm.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Sun, 29 Apr 2007 06:29:08 +0000 (16:29 +1000)]
[POWERPC] get_property cleanups
Just another pass through arch/powerpc for old usages.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Adrian Bunk [Sat, 28 Apr 2007 19:19:56 +0000 (05:19 +1000)]
[POWERPC] Remove the unused HTDMSOUND driver
Recently, someone fixed a syntax error in the HTDMSOUND driver
introduced 4 years ago.
Unfortunately not by trying to compile this driver for his hardware but
by code inspection - which seems to be a strong indication that there
are no users left for this OSS sound driver.
This patch therefore removes it.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Dan Malek <dan@embeddedalley.com>
Acked-by: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olof Johansson [Sat, 28 Apr 2007 02:49:03 +0000 (12:49 +1000)]
[POWERPC] cell: cbe_cpufreq cleanup and crash fix
cbe_cpufreq cleanups:
* comment format
* whitespace
* don't init on non-cell platforms
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Johannes Berg [Fri, 27 Apr 2007 22:00:03 +0000 (08:00 +1000)]
[POWERPC] Declare enable_kernel_spe in a header
This patch puts enable_kernel_spe into <asm-powerpc/system.h> along with
enable_kernel_altivec etc.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Mark A. Greer [Fri, 27 Apr 2007 20:48:24 +0000 (06:48 +1000)]
[POWERPC] Add dt_xlate_addr() to bootwrapper
dt_xlate_reg() looks up the 'reg' property in the specified node
to get the address and size to translate. Add dt_xlate_addr()
which is passed in the address and size to translate.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Scott Wood [Fri, 27 Apr 2007 20:32:15 +0000 (06:32 +1000)]
[POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE
A usage of CONFIG_DEVICE_TREE got accidentally truncated; this
fix allows out-of-tree dts files to work.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:05 +0000 (05:50 +1000)]
[POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards.
Why create a platform specific board_info structure that is hacked
together, ugly, and dangerous, when we've got a perfectly fine common
board_info structure that is hacked-together, ugly and dangerous.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:04 +0000 (05:50 +1000)]
[POWERPC] Add sane defaults for Xilinx EDK generated xparameters files
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:03 +0000 (05:50 +1000)]
[POWERPC] Add uartlite boot console driver for the zImage wrapper
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:02 +0000 (05:50 +1000)]
[POWERPC] Stop using ppc_sys for Xilinx Virtex boards
The arch/ppc/syslib/ppc_sys.c infrastructure does not work well for the
virtex ports. Move the ml300 and ml403 board ports over to use the new
virtex_devices infrastructure.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:01 +0000 (05:50 +1000)]
[POWERPC] New registration for common Xilinx Virtex ppc405 platform devices
Currently virtex support in mainline make use of the infrastructure in
arch/ppc/syslib/ppc_sys.c for registering common devices on virtex ppc405
platforms. The ppc_sys.c code is not well suited to the dynamic nature of
FPGA designs and makes adding new board ports more complex. This patch
adds a new listing of common devices which does not depend on the ppc_sys.c
infrastructure.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:50:00 +0000 (05:50 +1000)]
[POWERPC] Merge common virtex header files
The header files for the ml403 and ml300 are virtually identical, merge
them into a single file.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Grant Likely [Fri, 27 Apr 2007 19:49:59 +0000 (05:49 +1000)]
[POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform
Reverse dependency order for Xilinx Virtex parts. For these parts, It
makes more sense for boards/chips to specify which features they
provide instead of the features listing the parts they are implemented
in. I think it also makes adding new board ports simpler.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olof Johansson [Fri, 27 Apr 2007 05:52:43 +0000 (15:52 +1000)]
[POWERPC] Clean up cpufreq Kconfig dependencies
Shuffle Kconfig order, making the platform drivers menu depend on the global
option instead of each driver being dependent on it.
Also fix dependency of PPC_PMAC on the G5 one.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Paul Mackerras [Mon, 30 Apr 2007 00:24:24 +0000 (10:24 +1000)]
Revert "[POWERPC] Autodetect serial console on efika"
This reverts commit
9414715a7bbb45450015e9bc2676d85d919d08d4,
at Olaf Hering's request:
> Paul, please discard this patch. The optional graphics card may have
> also device_type 'serial' if it is in VGA mode.
> I will send an updated patch later.
Linus Torvalds [Sun, 29 Apr 2007 17:48:48 +0000 (10:48 -0700)]
Merge branch 'upstream-linus' of /linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (107 commits)
smc911x: fix compilation breakage wjen debug is on
[netdrvr] eexpress: minor corrections
add NAPI support to sb1250-mac.c
ixgb: ROUND_UP macro cleanup in drivers/net/ixgb
e1000: ROUND_UP macro cleanup in drivers/net/e1000
Generic HDLC sparse annotations
e100: Optionally use I/O mode only to access register space
e100: allow bad MAC address when running with invalid eeprom csum
ehea: fix for dlpar support
ehea: fix for sysfs entries
3C509: Remove unnecessary include of <linux/pm_legacy.h>
NetXen: Fix for vmalloc issues
NetXen: Fixes for Power PC architecture
NetXen: Port swap feature for multi port cards
NetXen: Removal of redundant macros
NetXen: Multi PCI support for Quad cards
NetXen: Removal of redundant argument passing
NetXen: Use multiple PCI functions
[netdrvr e100] experiment with doing RX in a similar manner to eepro100
[PATCH] ieee80211: add missing global needed by IEEE80211_DEBUG_XXXX
...
Linus Torvalds [Sun, 29 Apr 2007 17:48:21 +0000 (10:48 -0700)]
Merge branch 'upstream-linus' of /linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (86 commits)
SPIN_LOCK_UNLOCKED cleanup in drivers/ata/pata_winbond.c
drivers/ata/pata_cmd640.c: fix build with CONFIG_PM=n
pata_hpt37x: Further small fixes
pata_hpt3x2n: Add HPT371N support and other bits
ata: printk warning fixes
libata: separate ATA_EHI_DID_RESET into DID_SOFTRESET and DID_HARDRESET
ahci: consolidate common port flags
ata_timing: ensure t->cycle is always correct
libata: add missing call to ->cable_detect() in new EH path
pata_amd: remove contamination added during cable_detect conversion
libata: Handle drives that require a spin-up command before first access
libata: HPA support
libata: kill probe_ent and related helpers
libata: convert the remaining PATA drivers to new init model
libata: convert the remaining SATA drivers to new init model
libata: convert ata_pci_init_native_mode() users to new init model
libata: convert drivers with combined SATA/PATA ports to new init model
libata: add init helpers including ata_pci_prepare_native_host()
libata: convert native PCI host handling to new init model
libata: convert legacy PCI host handling to new init model
...
Linus Torvalds [Sun, 29 Apr 2007 17:47:25 +0000 (10:47 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (105 commits)
sonypi: use mutex instead of semaphore
sony-laptop: remove user visible camera controls as platform attributes
meye: make meye use sony-laptop instead of sonypi
sony-laptop: add a meye-usable include file for camera ops
sony-laptop: complete the motion eye camera support in sony-laptop
sonypi: try to detect if sony-laptop has already taken one of the known ioports
sonypi: suggest sonypi users to try sony-laptop instead
sony-laptop: add edge modem support (also called WWAN)
sony-laptop: add locking on accesses to the ioport and global vars
sony-laptop: add camera enable/disable parameter, better handle possible infinite loop
thinkpad-acpi: make drivers/misc/thinkpad_acpi:fan_mutex static
ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdrivers
ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
ACPI: thinkpad-acpi: improve dock subdriver initialization
ACPI: thinkpad-acpi: improve debugging for acpi helpers
ACPI: thinkpad-acpi: improve fan control documentation
ACPI: thinkpad-acpi: map ENXIO to EINVAL for fan sysfs
ACPI: thinkpad-acpi: fix a fan watchdog invocation
ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work
ACPI: thinkpad-acpi: add a fan-control feature master toggle
...
Martin Schwidefsky [Sun, 29 Apr 2007 06:03:59 +0000 (23:03 -0700)]
[AF_IUCV/IUCV]: smp_call_function deadlock
Calling smp_call_function can lead to a deadlock if it is called
from tasklet context.
Fixing this deadlock requires to move the smp_call_function from the
tasklet context to a work queue. To do that queue the path pending
interrupts to a separate list and move the path cleanup out of
iucv_path_sever to iucv_path_connect and iucv_path_pending.
This creates a new requirement for iucv_path_connect: it may not be
called from tasklet context anymore.
Also fixed compile problem for CONFIG_HOTPLUG_CPU=n and
another one when walking the cpu_online mask. When doing this,
we must disable cpu hotplug.
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Sesterhenn [Sun, 29 Apr 2007 04:26:23 +0000 (21:26 -0700)]
[IPV6]: Fix slab corruption running ip6sic
From: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gerrit Renker [Sun, 29 Apr 2007 04:21:46 +0000 (21:21 -0700)]
[TCP]: Update references in two old comments
This updates references to drafts in comments which must be about 10
years old. Internet draft draft-ietf-tcpimpl-prob-03.txt expired in 1998
and was replaced by RFC 2525 in March 1999.
Section 3.10 of the draft maps almost identically into section 2.17 of RFC
2525: both are entitled "Failure to RST on close with data pending", the
differences in text body amount to a typo and minor sentence change.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jamal Hadi Salim [Sun, 29 Apr 2007 04:20:32 +0000 (21:20 -0700)]
[XFRM]: Export SPD info
With this patch you can use iproute2 in user space to efficiently see
how many policies exist in different directions.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Hemminger [Sun, 29 Apr 2007 04:16:39 +0000 (21:16 -0700)]
[IPV6]: Track device renames in snmp6.
When network device's are renamed, the IPV6 snmp6 code
gets confused. It doesn't track name changes so it will OOPS
when network device's are removed.
The fix is trivial, just unregister/re-register in notify handler.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Sun, 29 Apr 2007 04:09:04 +0000 (21:09 -0700)]
[SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage.
sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls
copy_to_user() while the spinlock addr_lock is held. this should not
be done as copy_to_user() might sleep. the call to
sctp_copy_laddrs_to_user() while holding the lock is also problematic
as it calls copy_to_user()
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rusty Russell [Sun, 29 Apr 2007 04:04:03 +0000 (21:04 -0700)]
[NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats.
Herbert Xu conviced me that a new flag was overkill; every driver
currently overrides get_stats, so we might as well make the internal
one the default. If someone did fail to set get_stats, they would now
get all 0 stats instead of "No statistics available".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sergei Shtylyov [Sun, 29 Apr 2007 03:58:22 +0000 (20:58 -0700)]
[NETPOLL]: Remove CONFIG_NETPOLL_RX
Get rid of the CONFIG_NETPOLL_RX option completely since all the
dependencies have been removed long ago...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sergei Shtylyov [Sun, 29 Apr 2007 03:57:37 +0000 (20:57 -0700)]
[NETPOLL]: Fix TX queue overflow in trapped mode.
CONFIG_NETPOLL_TRAP causes the TX queue controls to be completely bypassed in
the netpoll's "trapped" mode which easily causes overflows in the drivers with
short TX queues (most notably, in 8139too with its 4-deep queue). So, make
this option more sensible by making it only bypass the TX softirq wakeup.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Tom Rini <trini@kernel.crashing.org>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Len Brown [Sun, 29 Apr 2007 03:19:25 +0000 (23:19 -0400)]
Pull bugzilla-8346 into release branch
Len Brown [Sun, 29 Apr 2007 03:16:59 +0000 (23:16 -0400)]
Pull sbs into release branch
Len Brown [Sun, 29 Apr 2007 03:13:03 +0000 (23:13 -0400)]
Pull dock into release branch
Len Brown [Sun, 29 Apr 2007 03:12:56 +0000 (23:12 -0400)]
Pull ec into release branch
Len Brown [Sun, 29 Apr 2007 03:12:03 +0000 (23:12 -0400)]
Pull misc-for-upstream into release branch
Len Brown [Sun, 29 Apr 2007 03:11:19 +0000 (23:11 -0400)]
Pull thinkpad into release branch
Conflicts:
drivers/misc/Kconfig
Signed-off-by: Len Brown <len.brown@intel.com>
Len Brown [Sun, 29 Apr 2007 03:09:57 +0000 (23:09 -0400)]
Pull sony into release branch
Len Brown [Sun, 29 Apr 2007 02:18:21 +0000 (22:18 -0400)]
Pull asus into release branch
Matthias Kaehlcke [Tue, 24 Apr 2007 20:02:35 +0000 (22:02 +0200)]
sonypi: use mutex instead of semaphore
the Sony Programmable I/O Control driver uses a semaphore as
mutex. use the mutex API instead of the (binary) semaphore
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:36:40 +0000 (23:36 +0900)]
sony-laptop: remove user visible camera controls as platform attributes
Avoid giving the user the possibility to shoot his own foot and let
the meye driver enable/disable the camera wisely (PCI_ID based).
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:36:26 +0000 (23:36 +0900)]
meye: make meye use sony-laptop instead of sonypi
Change sonypi_camera_command() calls to sony_pic_camera_command() and use
the renamed macros.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:34:36 +0000 (23:34 +0900)]
sony-laptop: add a meye-usable include file for camera ops
Copy and rename (for easier co-existence) the MEYE-wise exported interface.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:34:22 +0000 (23:34 +0900)]
sony-laptop: complete the motion eye camera support in sony-laptop
Add the exported sony_pic_camera_command() function to make the MEYE
driver happy.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:34:10 +0000 (23:34 +0900)]
sonypi: try to detect if sony-laptop has already taken one of the known ioports
Get the IO resources list in sony-laptop in the same order as listed
in sonypi and make sonypi check if one of those is already busy.
The sonypi check can be disabled by a module parameter in case the user
thinks we are plainly wrong (check_ioport=0).
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:22:11 +0000 (23:22 +0900)]
sonypi: suggest sonypi users to try sony-laptop instead
Try to migrate sonypi users to sony-laptop gracefully.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:21:42 +0000 (23:21 +0900)]
sony-laptop: add edge modem support (also called WWAN)
Some SZ Vaios have a gsm built-in modem. Allow powering on/off this device.
Thanks to Joshua Wise for the base code.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:19:36 +0000 (23:19 +0900)]
sony-laptop: add locking on accesses to the ioport and global vars
Better avoid having ioport commands mixing and global variables reading/writing.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
malattia@linux.it [Sat, 28 Apr 2007 14:18:45 +0000 (23:18 +0900)]
sony-laptop: add camera enable/disable parameter, better handle possible infinite loop
Use a parameter to enable/disable motion eye camera (for C1VE/C1VN models)
controls and avoid entering an infinite loop if the camera is not present
and the HW doesn't answer as we expect on io commands.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Adrian Bunk [Sat, 28 Apr 2007 19:19:38 +0000 (21:19 +0200)]
thinkpad-acpi: make drivers/misc/thinkpad_acpi:fan_mutex static
This patch makes the needlessly global fan_mutex static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:17 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdrivers
Add support to sysfs to the wan and bluetooth subdrivers.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:16 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
Add the hotkey sysfs support.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:15 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: improve dock subdriver initialization
The dock sub-driver has split-personality (two subdrivers), and it was
doing some unoptimal things on init because of that. Fix it so that the
second half of it will only init when necessary, and only if the first half
initialized sucessfully in the first place.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:14 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: improve debugging for acpi helpers
Some issues with the dock subdriver proved that a slightly improved
debugging setup for ACPI notifiers and handler helpers would be useful.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:13 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: improve fan control documentation
Improve fan control documentation and fix one mistake.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:12 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: map ENXIO to EINVAL for fan sysfs
Currently, all fan control operations return ENXIO if unsupported
operations are requested, but return EINVAL if invalid fan modes are
requested on a given ThinkPad.
This is not strictly correct for sysfs, so map ENXIO to EINVAL in the sysfs
attribute store handlers, as we do benefit from the ENXIO in other parts of
the driver code.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:11 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: fix a fan watchdog invocation
The fan control watchdog was being called in one place even when the fan
control operation had failed. Fix it.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:10 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work
Do not enable/rearm the fan control safety watchdog if we would not be able
to do anything to the fan anyway.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Henrique de Moraes Holschuh [Sat, 28 Apr 2007 01:00:09 +0000 (22:00 -0300)]
ACPI: thinkpad-acpi: add a fan-control feature master toggle
Len Brown considers that an active by default fan control interface in
laptops may be too close to giving users enough rope. There is a good
chance he is quite correct on this, especially if someone decides to use
that interface in applets and users are not aware of its risks.
This patch adds a master switch to thinkpad-acpi that enables or disables
the entire fan-control feature as a module parameter: "fan_control". It
defaults to disabled. Set it to non-zero to enable fan control.
Also, the patch removes the expermiental status from fan control, since it
is stable enough to not be called experimental, and the master switch makes
it safe enough to do so.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Bob Moore [Sun, 29 Apr 2007 00:53:50 +0000 (20:53 -0400)]
ACPICA: clear fields reserved before FADT r3
Linux-2.6.21 stopped booting on a P4/HT because Linux
wrote the FADT.CST_CNT value to the SMI_CMD.
Apparently this stumbled over some SMM instability,
such as confusing SMM when invoking it from cpu1.
Linux did this because even though the r2 FADT reserves
the CST_CNT field, this BIOS set that field and Linux
used it.
Turns out that up through 2.6.20 we explicitly cleared
cst_control for r2 FADTs. So here we go back to doing that,
plus also clear some additional fields that are reserved
until FADT r3.
http://bugzilla.kernel.org/show_bug.cgi?id=8346
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Milind Arun Choudhary [Thu, 26 Apr 2007 07:19:27 +0000 (00:19 -0700)]
SPIN_LOCK_UNLOCKED cleanup in drivers/ata/pata_winbond.c
remove SPIN_LOCK_UNLOCKED, use DEFINE_SPINLOCK instead
Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>