Commit Graph

27290 Commits

Author SHA1 Message Date
Larry Finger 7bd6b91800 [PATCH] wireless: correct dump of WPA IE
In net/ieee80211/softmac/ieee80211softmac_wx.c, there is a bug that
prints extended sign information whenever the byte value exceeds
0x7f. The following patch changes the printk to use a u8 cast to limit
the output to 2 digits. This bug was first noticed by Dan Williams
<dcbw@redhat.com>. This patch applies to the current master branch
of the Linville tree.

Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-06-15 15:48:14 -04:00
Jiri Slaby 12a3768792 [PATCH] pci: bcm43xx avoid pci_find_device
bcm43xx avoid pci_find_device

Change pci_find_device to safer pci_get_device with support for more
devices.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-06-15 15:48:13 -04:00
Michael Buesch 91769e7dd9 [PATCH] bcm43xx: preemptible periodic work
Make the heavy periodic work preemptible to avoid disabling
local IRQs for several msecs.

Signed-off-by: Michael Buesch <mb@buesch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-06-15 15:48:13 -04:00
Michael Buesch 78ff56a06e [PATCH] bcm43xx: redesign locking
Redesign the bcm43xx locking.
This is pre-work to get a preemptible periodic work handler.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-06-15 15:48:13 -04:00
Larry Finger 74f4903363 [PATCH] wireless: Changes to ieee80211.h for user space regulatory daemon
Attached are two small patches for include/net/ieee80211.h to prepare
for later submission of code to implement a user-space daemon that
supplies 802.11 regulatory information.

The first change adds a bit indicating that 802.11h rules are to be
applied to a channel. As discussed earlier in this list, a single bit
is unlikely to be sufficient; however, at this time I have been unable
to find any regulations implementing differences between 802.11a and
802.11h other than DFS, radar detection and passive scanning. A single
bit is thus sufficient to convey to the driver that these rules should
be obeyed.

The second change adds comments to the freq and max_power fields of
struct ieee80211_channel to indicate the units that are used.

Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-06-15 15:48:13 -04:00
John W. Linville 76df73ff90 Merge branch 'from-linus' into upstream 2006-06-13 15:38:11 -04:00
Sergey Vlasov 86bc843a26 [PATCH] tmpfs: Decrement i_nlink correctly in shmem_rmdir()
shmem_rmdir() must undo the increment of i_nlink done in
shmem_get_inode() for directories, otherwise at least
IN_DELETE_SELF inotify event generation is broken.

Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-12 14:29:04 -07:00
Robin H. Johnson cfd95a9cf5 [PATCH] tmpfs: time granularity fix for [acm]time going backwards
I noticed a strange behavior in a tmpfs file system the other day, while
building packages - occasionally, and seemingly at random, make decided to
rebuild a target. However, only on tmpfs.

A file would be created, and if checked, it had a sub-second timestamp.
However, after an utimes related call where sub-seconds should be set, they
were zeroed instead. In the case that a file was created, and utimes(...,NULL)
was used on it in the same second, the timestamp on the file moved backwards.

After some digging, I found that this was being caused by tmpfs not having a
time granularity set, thus inheriting the default 1 second granularity.

Hugh adds: yes, we missed tmpfs when the s_time_gran mods went into 2.6.11.
Unfortunately, the granularity of CURRENT_TIME, often used in filesystems,
does not match the default granularity set by alloc_super.  A few more such
discrepancies have been found, but this is the most important to fix now.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-12 13:55:52 -07:00
Linus Torvalds 5f856e8bdc Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Do not double-export sys_close() when CONFIG_SOLARIS_EMUL_MODULE
2006-06-12 13:46:43 -07:00
Linus Torvalds a3b5960ebd Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [IPV4]: Increment ipInHdrErrors when TTL expires.
  [TCP]: continued: reno sacked_out count fix
  [DCCP] Ackvec: fix soft lockup in ackvec handling code
2006-06-12 13:46:27 -07:00
Linus Torvalds 37b0d1dedc Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix Integrator and Versatile interrupt initialisation
  [ARM] 3546/1: PATCH: subtle lost interrupts bug on i.MX
  [ARM] 3547/1: PXA-OHCI: Allow platforms to specify a power budget
  [ARM] Fix Neponset IRQ handling
2006-06-12 13:45:41 -07:00
Weidong 42d1d52e69 [IPV4]: Increment ipInHdrErrors when TTL expires.
Signed-off-by: Weidong <weid@nanjing-fnst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-12 13:09:59 -07:00
Linus Torvalds d374c1c128 [sky2] Fix sky2 network driver suspend/resume
This fixes two independent problems: it would not save the PCI state on
suspend (and thus try to resume a nonexistent state on resume), and
while shut off, if an interrupt happened on the same shared irq, the irq
handler would react very badly to the interrupt status being an invalid
all-ones state.

Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-12 12:53:27 -07:00
Linus Torvalds 0e838b72d5 Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [PATCH] sata_mv: grab host lock inside eng_timeout
2006-06-12 07:47:04 -07:00
Aki M Nyrhinen 79320d7e14 [TCP]: continued: reno sacked_out count fix
From: Aki M Nyrhinen <anyrhine@cs.helsinki.fi>

IMHO the current fix to the problem (in_flight underflow in reno)
is incorrect.  it treats the symptons but ignores the problem. the
problem is timing out packets other than the head packet when we
don't have sack. i try to explain (sorry if explaining the obvious).

with sack, scanning the retransmit queue for timed out packets is
fine because we know which packets in our retransmit queue have been
acked by the receiver.

without sack, we know only how many packets in our retransmit queue the
receiver has acknowledged, but no idea which packets.

think of a "typical" slow-start overshoot case, where for example
every third packet in a window get lost because a router buffer gets
full.

with sack, we check for timeouts on those every third packet (as the
rest have been sacked). the packet counting works out and if there
is no reordering, we'll retransmit exactly the packets that were 
lost.

without sack, however, we check for timeout on every packet and end up
retransmitting consecutive packets in the retransmit queue. in our
slow-start example, 2/3 of those retransmissions are unnecessary. these
unnecessary retransmissions eat the congestion window and evetually
prevent fast recovery from continuing, if enough packets were lost.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-11 21:18:56 -07:00
Andrea Bittau afec35e3fe [DCCP] Ackvec: fix soft lockup in ackvec handling code
A soft lockup existed in the handling of ack vector records.
Specifically, when a tail of the list of ack vector records was
removed, it was possible to end up iterating infinitely on an element
of the tail.

Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-11 21:08:03 -07:00
David S. Miller ccefb5f3f6 [SPARC64]: Do not double-export sys_close() when CONFIG_SOLARIS_EMUL_MODULE
It is already exported by fs/open.c

Noticed by Ben Collins.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-11 21:05:25 -07:00
Paul Mackerras 289a1e995e [PATCH] Fix for the PPTP hangs that have been reported
People have been reporting that PPP connections over ptys, such as
used with PPTP, will hang randomly when transferring large amounts of
data, for instance in http://bugzilla.kernel.org/show_bug.cgi?id=6530.
I have managed to reproduce the problem, and the patch below fixes the
actual cause.

The problem is not in fact in ppp_async.c but in n_tty.c.  What
happens is that when pptp reads from the pty, we call read_chan() in
drivers/char/n_tty.c on the master side of the pty.  That copies all
the characters out of its buffer to userspace and then calls
check_unthrottle(), which calls the pty unthrottle routine, which
calls tty_wakeup on the slave side, which calls ppp_asynctty_wakeup,
which calls tasklet_schedule.  So far so good.  Since we are in
process context, the tasklet runs immediately and calls
ppp_async_process(), which calls ppp_async_push, which calls the
tty->driver->write function to send some more output.

However, tty->driver->write() returns zero, because the master
tty->receive_room is still zero.  We haven't returned from
check_unthrottle() yet, and read_chan() only updates tty->receive_room
_after_ calling check_unthrottle.  That means that the driver->write
call in ppp_async_process() returns 0.  That would be fine if we were
going to get a subsequent wakeup call, but we aren't (we just had it,
and the buffer is now empty).

The solution is for n_tty.c to update tty->receive_room _before_
calling the driver unthrottle routine.  The patch below does this.
With this patch I was able to transfer a 900MB file over a PPTP
connection (taking about 25 minutes), whereas without the patch the
connection would always stall in under a minute.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-11 20:40:39 -07:00
Mark Lord 2f9719b61e [PATCH] sata_mv: grab host lock inside eng_timeout
Bug fix:  mv_eng_timeout() calls mv_err_intr() without first grabbing the host lock,
which can lead to all sorts of interesting scenarios.

This whole error-handling portion of sata_mv is nasty (and will get fixed for
the new EH stuff), but for now this patch will help keep it on life-support.

Signed-off-by:  Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-11 23:03:18 -04:00
Linus Torvalds dc4967e756 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6:
  [PATCH] PCI: reverse pci config space restore order
  [PATCH] PCI: Improve PCI config space writeback
  [PATCH] PCI: Error handling on PCI device resume
  [PATCH] PCI: fix pciehp compile issue when CONFIG_ACPI is not enabled
2006-06-11 15:28:04 -07:00
Christoph Lameter c0bbbc73d5 [PATCH] typo in vmscan.c
From: Christoph Lameter <clameter@sgi.com>

Looks like a comma was left from the conversion from a struct to an
assignment.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-11 15:27:37 -07:00
Yu, Luming 8b8c8d280a [PATCH] PCI: reverse pci config space restore order
According to Intel ICH spec, there are several rules that Base Address
should be programmed before IOSE  (PCICMD register ) enabled.

For example ICH7:

12.1.3  SATA : the base address register for the bus master register
               should be programmed before this bit is set.

11.1.3:  PCICMD (USB): The base address register for USB should be
                       programmed before this bit is set.
....

To make sure kernel code follow this rule , and prevent unnecessary
confusion. I proposal this patch.

Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-11 14:02:27 -07:00
Dave Jones 04d9c1a110 [PATCH] PCI: Improve PCI config space writeback
At least one laptop blew up on resume from suspend with a black screen due
to a lack of this patch.  By only writing back config space that is
different, we minimise the possibility of accidents like this.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-11 14:02:27 -07:00
Jean Delvare 8d92bc2270 [PATCH] PCI: Error handling on PCI device resume
We currently don't handle errors properly when resuming a PCI device:
* In pci_default_resume() we capture the error code returned by
  pci_enable_device() but don't pass it up to the caller.
  Introduced by commit 95a629657d
* In pci_resume_device(), the errors possibly returned by the driver's
  .resume method or by the generic pci_default_resume() function are
  ignored.

This patch fixes both issues.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-11 14:02:27 -07:00
akpm@osdl.org 0ce030395b [PATCH] PCI: fix pciehp compile issue when CONFIG_ACPI is not enabled
Fix build error when CONFIG_ACPI not defined

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-11 14:02:27 -07:00
Krzysztof Helt 650fb83822 [SPARC]: Migration cost tune up in sparc smp.
This patch sets the max_cache_size value required to tune up
scheduler in SMP systems. Otherwise, the calculated
migration_cost is too high and task scheduling may lock up.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-10 22:03:43 -07:00
David S. Miller 9145bcf635 [SPARC64]: Set appropriate max_cache_size.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-10 22:02:17 -07:00
Linus Torvalds 1f4d4a7e8f Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Avoid JBUS errors on some Niagara systems.
  [FUSION]: Fix mptspi.c build with CONFIG_PM not set.
  [TG3]: Handle Sun onboard tg3 chips more correctly.
  [SPARC64]: Dump local cpu registers in sun4v_log_error()
2006-06-10 11:03:51 -07:00
Milton Miller 938473b246 [PATCH] powerpc: console_initcall ordering issues
From: Milton Miller <miltonm@bga.com>

The add_preferred_console call in rtas_console.c was not causing the
console to be selected.  It turns out that the add_preferred_console was
being called after the hvc_console driver was registered.  It only works
when it is called before the console driver is registered.

Reorder hvc_console.o after the hvc_console drivers to allow the selection
during console_initcall processing.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-10 11:02:05 -07:00
Markus Lidel 57a62fed87 [PATCH] I2O: Bugfixes to get I2O working again
From: Markus Lidel <Markus.Lidel@shadowconnect.com>

- Fixed locking of struct i2o_exec_wait in Executive-OSM

- Removed LCT Notify in i2o_exec_probe() which caused freeing memory and
  accessing freed memory during first enumeration of I2O devices

- Added missing locking in i2o_exec_lct_notify()

- removed put_device() of I2O controller in i2o_iop_remove() which caused
  the controller structure get freed to early

- Fixed size of mempool in i2o_iop_alloc()

- Fixed access to freed memory in i2o_msg_get()

See http://bugzilla.kernel.org/show_bug.cgi?id=6561

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-10 11:02:05 -07:00
Andrew Morton a913f50706 [PATCH] powernow-k8 crash workaround
From: Andrew Morton <akpm@osdl.org>

Work around the oops reported in
http://bugzilla.kernel.org/show_bug.cgi?id=6478.

Thanks to Ralf Hildebrandt <ralf.hildebrandt@charite.de> for testing and
reporting.

Acked-by: Dave Jones <davej@codemonkey.org.uk>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-10 11:02:05 -07:00
David Howells 670bd95e04 [PATCH] Further alterations for memory barrier document
From: David Howells <dhowells@redhat.com>

Apply some alterations to the memory barrier document that I worked out
with Paul McKenney of IBM, plus some of the alterations suggested by Alan
Stern.

The following changes were made:

 (*) One of the examples given for what can happen with overlapping memory
     barriers was wrong.

 (*) The description of general memory barriers said that a general barrier is
     a combination of a read barrier and a write barrier.  This isn't entirely
     true: it implies both, but is more than a combination of both.

 (*) The first example in the "SMP Barrier Pairing" section was wrong: the
     loads around the read barrier need to touch the memory locations in the
     opposite order to the stores around the write barrier.

 (*) Added a note to make explicit that the loads should be in reverse order to
     the stores.

 (*) Adjusted the diagrams in the "Examples Of Memory Barrier Sequences"
     section to make them clearer.  Added a couple of diagrams to make it more
     clear as to how it could go wrong without the barrier.

 (*) Added a section on memory speculation.

 (*) Dropped any references to memory allocation routines doing memory
     barriers.  They may do sometimes, but it can't be relied on.  This may be
     worthy of further documentation later.

 (*) Made the fact that a LOCK followed by an UNLOCK should not be considered a
     full memory barrier more explicit and gave an example.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-10 11:02:05 -07:00
Linus Torvalds d90d2c385d Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [PATCH] powerpc: Fix cell blade detection
  [PATCH] powerpc: Fix call to ibm,client-architecture-support
  powerpc: Fix machine check problem on 32-bit kernels
2006-06-10 10:59:39 -07:00
Russell King 56f1319e87 [ARM] Fix Integrator and Versatile interrupt initialisation
Both Integrator and Versatile were using set_irq_handler() and
enable_irq(), and working around the initialisation of the
chained interrupt, instead of the more correct
set_irq_chained_handler() function.  Fix Integrator and
Versatile to use the right function, and remove these work-arounds.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-10 12:42:12 +01:00
David S. Miller 46b304934d [SPARC64]: Avoid JBUS errors on some Niagara systems.
Doing PCI config space accesses to non-present PCI slots
can result in fatal JBUS errors if the PCI config access
hypervisor call is performed on cpus other than the boot
cpu.

PCI config space accesses to present PCI slots works just
fine.

Recursively traverse the OBP device tree under the PCI
controller node and record all present device IDs into
a small hash table.

Avoid the hypervisor call for any PCI config space access
attempt for a device not recorded in the hash table.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-10 01:06:25 -07:00
Tom "spot" Callaway c29ca9d181 [FUSION]: Fix mptspi.c build with CONFIG_PM not set.
Signed-off-by: Tom "spot" Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-09 17:01:48 -07:00
David S. Miller f49639e643 [TG3]: Handle Sun onboard tg3 chips more correctly.
Get rid of all the SUN_570X logic and instead:

1) Make sure MEMARB_ENABLE is set when we probe the SRAM
   for config information.  If that is off we will get
   timeouts.

2) Always try to sync with the firmware, if there is no
   firmware running do not treat it as an error and instead
   just report it the first time we notice this condition.

3) If there is no valid SRAM signature, assume the device
   is onboard by setting TG3_FLAG_EEPROM_WRITE_PROT.

Update driver version and release date.

With help from Michael Chan and Fabio Massimo Di Nitto.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-09 12:03:51 -07:00
David S. Miller 5224e6cc3a [SPARC64]: Dump local cpu registers in sun4v_log_error()
This makes the debugging information more usable.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-09 12:03:49 -07:00
Arnd Bergmann 133dda1e4f [PATCH] powerpc: Fix cell blade detection
The IBM Cell blade firmware might confuse the kernel to think it's a
pSeries machine. This fixes it for now. With a bit of luck, the firmware
will be updated to avoid that in the future but currently that patch is
needed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-09 13:06:00 +10:00
Benjamin Herrenschmidt 33b7497794 [PATCH] powerpc: Fix call to ibm,client-architecture-support
The code in prom_init.c calling the firmware
ibm,client-architecture-support method on pSeries has a bug where it
fails to properly pass the instance handle of the firmware object when
trying to call a method. Result ranges from the call doing nothing to
the firmware crashing. (Found by Segher, thanks !)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-09 13:05:51 +10:00
Paul Mackerras 7c85d1f9d3 powerpc: Fix machine check problem on 32-bit kernels
This fixes a bug found by Dave Jones that means that it is possible
for userspace to provoke a machine check on 32-bit kernels.  This
also fixes a couple of other places where I found similar problems
by inspection.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-09 13:02:59 +10:00
Linus Torvalds 128e6ced24 Merge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
  e1000: remove risky prefetch on next_skb->data
  e1000: fix ethtool test irq alloc as "probe"
  [PATCH] bcm43xx: add DMA rx poll workaround to DMA4
2006-06-08 15:16:35 -07:00
Martin Schwidefsky bafe00cc92 [PATCH] s390: fix in-user atomic futex operation.
From: Martin Schwidefsky <schwidefsky@de.ibm.com>

__futex_atomic_op needs to do an atomic operation in the user address space,
not the kernel address space.  Add the missing sacf 256/sacf 0 to switch to
the secondary mode before doing the compare-and-swap.  In addition add
another fixup for catch specification exceptions if the compare-and-swap
address is not aligned.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:15:30 -07:00
Jens Axboe 71601e2b33 [PATCH] debugfs inode leak
Looking at the reiser4 crash, I found a leak in debugfs. In
debugfs_mknod(), we create the inode before checking if the dentry
already has one attached. We don't free it if that is the case.

These bugs happen quite often, I'm starting to think we should disallow
such coding in CodingStyle.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:14:24 -07:00
Jens Axboe bc1c116974 [PATCH] elevator switching race
There's a race between shutting down one io scheduler and firing up the
next, in which a new io could enter and cause the io scheduler to be
invoked with bad or NULL data.

To fix this, we need to maintain the queue lock for a bit longer.
Unfortunately we cannot do that, since the elevator init requires to be
run without the lock held.  This isn't easily fixable, without also
changing the mempool API.  So split the initialization into two parts,
and alloc-init operation and an attach operation.  Then we can
preallocate the io scheduler and related structures, and run the attach
inside the lock after we detach the old one.

This patch has survived 30 minutes of 1 second io scheduler switching
with a very busy io load.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:14:23 -07:00
Malcom Parsons 26e780e8ef [PATCH] fbcon: fix limited scroll in SCROLL_PAN_REDRAW mode
From: Malcom Parsons <malcolm.parsons@gmail.com>

When scrolling up in SCROLL_PAN_REDRAW mode with a large limited scroll
region, the bottom few lines have to be redrawn.  Without this patch, the
wrong text is drawn into these lines, corrupting the display.

Observed in 2.6.14 when running an IRC client in the Nintendo DS linux
port.

I haven't tested if scrolling down has the same problem.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:12:21 -07:00
Ralf Baechle 45b35a5ced [PATCH] Fix mempolicy.h build error
From: Ralf Baechle <ralf@linux-mips.org>

<linux/mempolicy.h> uses struct mm_struct and relies on a definition or
declaration somehow magically being dragged in which may result in a
build:

[...]
  CC      mm/mempolicy.o
In file included from mm/mempolicy.c:69:
include/linux/mempolicy.h:150: warning: ‘struct mm_struct’ declared inside parameter list
include/linux/mempolicy.h:150: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/mempolicy.h:175: warning: ‘struct mm_struct’ declared inside parameter list
mm/mempolicy.c:622: error: conflicting types for ‘do_migrate_pages’
include/linux/mempolicy.h:175: error: previous declaration of ‘do_migrate_pages’ was here
mm/mempolicy.c:1661: error: conflicting types for ‘mpol_rebind_mm’
include/linux/mempolicy.h:150: error: previous declaration of ‘mpol_rebind_mm’ was here
make[1]: *** [mm/mempolicy.o] Error 1
make: *** [mm] Error 2
[ralf@denk linux-ip35]$

Including <linux/sched.h> is a step into direction of include hell so
fixed by adding a forward declaration of struct mm_struct instead.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:12:21 -07:00
Lennert Buytenhek fd0a0ac1c5 [PATCH] ep93xx build fix
From: Lennert Buytenhek <buytenh@wantstofly.org>

The recent renaming of m48t86's ->readb() and ->writeb() platform driver
methods (2d7b20c188) to ->readbyte() and
->writebyte() to fix the ia64 build broke the build of the cirrus ep93xx
ARM platform.  This patch fixes it up.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:12:21 -07:00
Andy Currid a2ef3a50f1 [PATCH] Fix HPET operation on 64-bit NVIDIA platforms
From: "Andy Currid" <ACurrid@nvidia.com>

This patch fixes a kernel panic during boot that occurs on NVIDIA platforms
that have HPET enabled.

When HPET is enabled, the standard timer IRQ is routed to IOAPIC pin 2 and is
advertised as such in the ACPI APIC table - but an earlier workaround in the
kernel was ignoring this override.  The fix is to honor timer IRQ overrides
from ACPI when HPET is detected on an NVIDIA platform.

Signed-off-by: Andy Currid <acurrid@nvidia.com>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: "Yu, Luming" <luming.yu@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:12:21 -07:00
Andy Currid d44647b0a6 [PATCH] Fix HPET operation on 32-bit NVIDIA platforms
From: "Andy Currid" <ACurrid@nvidia.com>

This patch fixes a kernel panic during boot that occurs on NVIDIA platforms
that have HPET enabled.

When HPET is enabled, the standard timer IRQ is routed to IOAPIC pin 2 and is
advertised as such in the ACPI APIC table - but an earlier workaround in the
kernel was ignoring this override.  The fix is to honor timer IRQ overrides
from ACPI when HPET is detected on an NVIDIA platform.

Signed-off-by: Andy Currid <acurrid@nvidia.com>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: "Yu, Luming" <luming.yu@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-08 15:12:21 -07:00