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16 years agoixgbe: Add optional DCA infrastructure
Jeb Cramer [Mon, 3 Mar 2008 23:04:02 +0000 (15:04 -0800)]
ixgbe: Add optional DCA infrastructure

82598 cards and up support DCA, which enables the chipset to warm
up the caches for upcoming payload data. This code makes the
driver plug into the CONFIG_DCA infrastructure that was merged
earlier.

Signed-off-by: Jeb Cramer <cramerj@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoixgbe: Introduce adaptive interrupt moderation
Ayyappan Veeraiyan [Mon, 3 Mar 2008 23:03:57 +0000 (15:03 -0800)]
ixgbe: Introduce adaptive interrupt moderation

82598 can produce a formidable interrupt rate, and is largely
unusable without some form of moderation. The default behaviour
before this patch is to limit irq's to a reasonable number.
However, just like our other drivers we can reduce latency
for small packet-type traffic considerably by allowing the
irq rate to go up dynamically.

This patch introduces a simple irq moderation algorithm based
on traffic analysis. The driver will use more CPU to service
small packets quicker but will perform the same on bulk traffic
as the old code.

Signed-off-by: Ayyappan Veeraiyan <ayyappan.veeraiyan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoixgbe: Introduce Multiqueue TX
Ayyappan Veeraiyan [Mon, 3 Mar 2008 23:03:52 +0000 (15:03 -0800)]
ixgbe: Introduce Multiqueue TX

Now that the irq vector code is in place, we can add the conditional
multiqueue TX code in the driver. This requires the optional
CONFIG_NETDEVICES_MULTIQUEUE=y and will not be enabled without
it.

Signed-off-by: Ayyappan Veeraiyan <ayyappan.veeraiyan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Waskiewicz Jr, Peter P <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoixgbe: Introduce MSI-X queue vector code
Ayyappan Veeraiyan [Mon, 3 Mar 2008 23:03:45 +0000 (15:03 -0800)]
ixgbe: Introduce MSI-X queue vector code

This code abstracts the per-queue MSI-X interrupt vector into
a queue vector layer. This abstraction is needed since there can
be many more queues than available MSI-X vectors in a machine.

The MSI-X irq vectors are remapped to a shared queue vector which
can point to several (both RX and TX) hardware queues. The NAPI
algorithm then cleans the appropriate ring/queues on interrupt
or poll.

The remapping is a delicate and complex calculation to make sure
that we're not unbalancing the irq load, and spreads the irqs
as much as possible, and may combine RX and TX flows onto the
same queue vector.

This effectively enables receive flow hashing across vectors
and helps irq load balance across CPUs.

Signed-off-by: Ayyappan Veeraiyan <ayyappan.veeraiyan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Waskiewicz Jr, Peter P <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years ago/drivers/net/atarilance.c replaced init_module&cleanup_module with module_init&module...
Jon Schindler [Thu, 28 Feb 2008 07:31:18 +0000 (01:31 -0600)]
/drivers/net/atarilance.c replaced init_module&cleanup_module with module_init&module_exit

Replaced init_module and cleanup_module with static functions and module_init/module_exit.

Signed-off-by: Jon Schindler <jkschind@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years ago/drivers/net/at1700.c replaced init_module&cleanup_module with module_init&module_exit
Jon Schindler [Thu, 28 Feb 2008 07:31:12 +0000 (01:31 -0600)]
/drivers/net/at1700.c replaced init_module&cleanup_module with module_init&module_exit

Replaced init_module and cleanup_module with static functions and module_init/module_exit.

Signed-off-by: Jon Schindler <jkschind@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years ago/drivers/net/arcnet/com20020.c replaced init_module&cleanup_module with module_init...
Jon Schindler [Thu, 28 Feb 2008 07:31:08 +0000 (01:31 -0600)]
/drivers/net/arcnet/com20020.c replaced init_module&cleanup_module with module_init&module_exit

Replaced init_module and cleanup_module with static functions and module_init/module_exit.

Signed-off-by: Jon Schindler <jkschind@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years ago/drivers/net/appletalk/cops.c replaced init_module&cleanup_module with module_init...
Jon Schindler [Thu, 28 Feb 2008 07:30:50 +0000 (01:30 -0600)]
/drivers/net/appletalk/cops.c replaced init_module&cleanup_module with module_init&module_exit

Replaced init_module and cleanup_module with static functions and module_init/module_exit.

Signed-off-by: Jon Schindler <jkschind@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years ago/drivers/net/8390.c replaced init_module&cleanup_module with module_init&module_exit
Jon Schindler [Thu, 28 Feb 2008 07:30:14 +0000 (01:30 -0600)]
/drivers/net/8390.c replaced init_module&cleanup_module with module_init&module_exit

Replaced init_module and cleanup_module with static functions and module_init/module_exit.

Signed-off-by: Jon Schindler <jkschind@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agosmc91x: make superh use default config V2
Magnus Damm [Fri, 22 Feb 2008 10:55:33 +0000 (19:55 +0900)]
smc91x: make superh use default config V2

Removes superh board specific configuration from the header file. These boards
will instead be configured using platform data.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agosmc91x: add insw/outsw to default config V2
Magnus Damm [Fri, 22 Feb 2008 10:55:24 +0000 (19:55 +0900)]
smc91x: add insw/outsw to default config V2

This patch makes sure SMC_insw()/SMC_outsw() are defined for the
default configuration. Without this change BUG()s will be triggered
when using 16-bit only platform data and the default configuration.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agosmc91x: introduce platform data flags V2
Magnus Damm [Fri, 22 Feb 2008 10:55:15 +0000 (19:55 +0900)]
smc91x: introduce platform data flags V2

This patch introduces struct smc91x_platdata and modifies the driver so
bus width is checked during run time using SMC_nBIT() instead of
SMC_CAN_USE_nBIT.

V2 keeps static configuration lean using SMC_DYNAMIC_BUS_CONFIG.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agosmc91x: pass along private data V2
Magnus Damm [Fri, 22 Feb 2008 10:55:05 +0000 (19:55 +0900)]
smc91x: pass along private data V2

Pass a private data pointer to macros and functions. This makes it easy
to later on make run time decisions. This patch does not change any logic.
These changes should be optimized away during compilation.

V2 changes the macro argument name from "priv" to "lp".

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoS2io: Version update for multiqueue and vlan patches
Sreenivasa Honnur [Wed, 20 Feb 2008 22:10:28 +0000 (17:10 -0500)]
S2io: Version update for multiqueue and vlan patches

- Updated version number.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoS2io: Support for vlan_rx_kill_vid entry point
Sreenivasa Honnur [Wed, 20 Feb 2008 22:09:15 +0000 (17:09 -0500)]
S2io: Support for vlan_rx_kill_vid entry point

- Resubmit #3
- Added s2io_vlan_rx_kill_vid entry point function for unregistering vlan.
- Fix to aggregate vlan packets. IP offset is incremented by
  4 bytes if the packet contains vlan header.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoS2io: Multiqueue network device support - FIFO selection based on L4 ports
Sreenivasa Honnur [Wed, 20 Feb 2008 22:07:51 +0000 (17:07 -0500)]
S2io: Multiqueue network device support - FIFO selection based on L4 ports

- Resubmit #2
- Transmit fifo selection based on TCP/UDP ports.
- Added tx_steering_type loadable parameter for transmit fifo selection.
  0x0 NO_STEERING: Default FIFO is selected.
  0x1 TX_PRIORITY_STEERING: FIFO is selected based on skb->priority.
  0x2 TX_DEFAULT_STEERING: FIFO is selected based on L4 Ports.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoS2io: Multiqueue network device support implementation
Sreenivasa Honnur [Wed, 20 Feb 2008 21:44:07 +0000 (16:44 -0500)]
S2io: Multiqueue network device support implementation

- Resubmit #3
Multiqueue netwrok device support implementation.
- Added a loadable parameter "multiq" to enable/disable multiqueue support,
  by default it is disabled.
- skb->queue_mapping is not used for queue/fifo selection. FIFO selection is
  based on skb->priority.
- Added per FIFO flags FIFO_QUEUE_START and FIFO_QUEUE_STOP. Check this flag
  for starting and stopping netif queue and update the flags accordingly.
- In tx_intr_handler added a check to ensure that we have free TXDs before wak-
  ing up the queue.
- Added helper functions for queue manipulation(start/stop/wakeup) to invoke
  appropriate netif_ functions.
- Calling netif_start/stop for link up/down case respectively.

- As per Andi kleen's review comments, using skb->priority field for FIFO
  selection.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoqeth: remove old qeth files
Frank Blaschka [Fri, 15 Feb 2008 08:19:43 +0000 (09:19 +0100)]
qeth: remove old qeth files

Remove all obsolete qeth files.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoqeth: new qeth device driver
Frank Blaschka [Fri, 15 Feb 2008 08:19:42 +0000 (09:19 +0100)]
qeth: new qeth device driver

List of major changes and improvements:
 no manipulation of the global ARP constructor
 clean code split into core, layer 2 and layer 3 functionality
 better exploitation of the ethtool interface
 better representation of the various hardware capabilities
 fix packet socket support (tcpdump), no fake_ll required
 osasnmpd notification via udev events
 coding style and beautification

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoctc: removal of the old ctc driver
Peter Tiedemann [Thu, 7 Feb 2008 23:03:50 +0000 (00:03 +0100)]
ctc: removal of the old ctc driver

ctc driver is replaced by a new ctcm driver.
The ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.
This patch removes the functions of the old ctc driver.

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoctcm: infrastructure for replaced ctc driver
Peter Tiedemann [Thu, 7 Feb 2008 23:03:49 +0000 (00:03 +0100)]
ctcm: infrastructure for replaced ctc driver

ctcm driver supports the channel-to-channel connections of the
old ctc driver plus an additional MPC protocol to provide SNA
connectivity.

This new ctcm driver replaces the existing ctc driver.

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agodrivers/s390/net: Kconfig brush up
Ursula Braun [Thu, 7 Feb 2008 23:03:48 +0000 (00:03 +0100)]
drivers/s390/net: Kconfig brush up

adapt drivers/s390/net/Kconfig to current IBM wording
and further cosmetics

Signed-off-by: Peter Tiedemann <ptiedem@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: reduce forward declarations
Jay Cliburn [Sun, 3 Feb 2008 01:50:12 +0000 (19:50 -0600)]
atl1: reduce forward declarations

Rearrange functions to allow removal of some forward declarations.
Make certain global functions static along the way.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: make functions static
Jay Cliburn [Sun, 3 Feb 2008 01:50:11 +0000 (19:50 -0600)]
atl1: make functions static

Make needlessly global functions static.  In a couple of cases this
requires removing forward declarations and reordering functions.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: print debug info if rrd error
Jay Cliburn [Sun, 3 Feb 2008 01:50:10 +0000 (19:50 -0600)]
atl1: print debug info if rrd error

Add some debug printks if we encounter a potentially bad receive
return descriptor.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: use netif_msg
Jay Cliburn [Sun, 3 Feb 2008 01:50:09 +0000 (19:50 -0600)]
atl1: use netif_msg

Use netif_msg_* for console messages emitted by the driver. Add a
parameter to allow control of messaging at driver startup, and also
add the ability to control it with ethtool.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: use csum_start
Jay Cliburn [Sun, 3 Feb 2008 01:50:08 +0000 (19:50 -0600)]
atl1: use csum_start

Use skb->csum_start for tx checksum offload preparation. Also swap
the variables css and cso so they hold the intended values of csum
start and offset, respectively.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: simplify tx packet descriptor
Jay Cliburn [Sun, 3 Feb 2008 01:50:07 +0000 (19:50 -0600)]
atl1: simplify tx packet descriptor

The transmit packet descriptor consists of four 32-bit words, with word 3
upper bits overloaded depending upon the condition of its bits 3 and 4.
The driver currently duplicates all word 2 and some word 3 register bit
definitions unnecessarily and also uses a set of nested structures in its
definition of the TPD without good cause. This patch adds a lengthy
comment describing the TPD, eliminates duplicate TPD bit definitions,
and simplifies the TPD structure itself. It also expands the TSO check
to correctly handle custom checksum versus TSO processing using the revised
TPD definitions. Finally, shorten some variable names in the transmit
processing path to reduce line lengths, rename some variables to better
describe their purpose (e.g., nseg versus m), and add a comment or two
to better describe what the code is doing.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: add ethtool register dump
Jay Cliburn [Sun, 3 Feb 2008 01:50:06 +0000 (19:50 -0600)]
atl1: add ethtool register dump

Add the ethtool register dump option to the atl1 driver.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: fix broken TSO
Jay Cliburn [Sun, 3 Feb 2008 01:50:05 +0000 (19:50 -0600)]
atl1: fix broken TSO

The L1 tx packet descriptor expects TCP Header Length to be expressed as a
number of 32-bit dwords.  The atl1 driver uses tcp_hdrlen() to populate the
field, but tcp_hdrlen() returns the header length in bytes, not in dwords.
Add a shift to convert tcp_hdrlen() to dwords when we write it to the tpd.

Also, some of our bit assignments are made to the wrong tpd words.  Change
those to the correct words.

Finally, since all this fixes TSO, enable TSO by default.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Acked-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: move common functions to atlx files
Jay Cliburn [Sun, 3 Feb 2008 01:50:04 +0000 (19:50 -0600)]
atl1: move common functions to atlx files

The future atl2 driver and the existing atl1 driver can share certain
functions and definitions.  Move these shareable functions and definitions
out of atl1-specific files and into atlx.c and atlx.h.  Some transitory
hackery will be present until atl2 is merged.

Reduce the number of source files by moving ethtool, hw, and param
functions from separate files into atl1_main.c, then rename it to just
atl1.c.

Move all atl1-specific definitions from atl1_hw.h to atl1.h.

Finally, clean up to make checkpatch.pl happy.

Signed-off-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoatl1: relocate atl1 driver to /drivers/net/atlx
Jay Cliburn [Sun, 3 Feb 2008 01:50:03 +0000 (19:50 -0600)]
atl1: relocate atl1 driver to /drivers/net/atlx

In preparation for a future Atheros L2 NIC driver (called atl2), relocate
the atl1 driver into a new /drivers/net/atlx directory that will ultimately
be shared with the future atl2 driver.

Signed-off-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoremove the obsolete xircom_tulip_cb driver
Adrian Bunk [Mon, 28 Jan 2008 22:14:12 +0000 (00:14 +0200)]
remove the obsolete xircom_tulip_cb driver

The xircom_tulip_cb driver has been replaced the xircom_cb driver, and
since it depended on BROKEN_ON_SMP it e.g. was no longer present in many
distribution kernels.

This patch therefore removes it.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agosk98lin: remove obsolete driver
Stephen Hemminger [Thu, 31 Jan 2008 06:04:05 +0000 (22:04 -0800)]
sk98lin: remove obsolete driver

All the hardware supported by this driver is now supported
by the skge driver. The last remaining issue was support for ancient
dual port SysKonnect fiber boards, and the skge driver now does these
correctly (p.s. sk98lin was always broken on these old dual port
boards anyway).

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
16 years agoLinux 2.6.25-rc6 v2.6.25-rc6
Linus Torvalds [Sun, 16 Mar 2008 23:32:14 +0000 (16:32 -0700)]
Linux 2.6.25-rc6

16 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
Linus Torvalds [Sun, 16 Mar 2008 17:48:23 +0000 (10:48 -0700)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  [PARISC] make ptr_to_pide() static
  [PARISC] head.S: section mismatch fixes
  [PARISC] add back Crestone Peak cpu
  [PARISC] futex: special case cmpxchg NULL in kernel space
  [PARISC] clean up show_stack
  [PARISC] add pa8900 CPUs to hardware inventory
  [PARISC] clean up include/asm-parisc/elf.h
  [PARISC] move defconfig to arch/parisc/configs/
  [PARISC] add back AD1889 MAINTAINERS entry
  [PARISC] pdc_console: fix bizarre panic on boot
  [PARISC] dump_stack in show_regs
  [PARISC] pdc_stable: fix compile errors
  [PARISC] remove unused pdc_iodc_printf function
  [PARISC] bump __NR_syscalls
  [PARISC] unbreak pgalloc.h
  [PARISC] move VMALLOC_* definitions to fixmap.h
  [PARISC] wire up timerfd syscalls
  [PARISC] remove old timerfd syscall

16 years ago[PARISC] make ptr_to_pide() static
FUJITA Tomonori [Mon, 10 Mar 2008 11:43:24 +0000 (20:43 +0900)]
[PARISC] make ptr_to_pide() static

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] head.S: section mismatch fixes
Helge Deller [Wed, 26 Dec 2007 17:07:01 +0000 (18:07 +0100)]
[PARISC] head.S: section mismatch fixes

- move boot_args[] into the init section
- move $global$ into the read_mostly section
- fix the following two section mismatches:
WARNING: vmlinux.o(.text+0x9c): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20')
WARNING: vmlinux.o(.text+0xa0): Section mismatch: reference to .init.text:start_kernel (between '$pgt_fill_loop' and '$is_pa20')

Signed-off-by: Helge Deller <deller@gmx.de>
SIgned-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] add back Crestone Peak cpu
Kyle McMartin [Sat, 1 Mar 2008 19:40:43 +0000 (11:40 -0800)]
[PARISC] add back Crestone Peak cpu

Crestone Peak Slow is the 800MHz PA-8800 cpu in the C8000.
0x88B is probably the Crestone Peak Fast.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] futex: special case cmpxchg NULL in kernel space
Kyle McMartin [Sat, 1 Mar 2008 18:25:52 +0000 (10:25 -0800)]
[PARISC] futex: special case cmpxchg NULL in kernel space

Commit a0c1e9073ef7428a14309cba010633a6cd6719ea added code to futex.c
to detect whether futex_atomic_cmpxchg_inatomic was implemented at run
time:

+       curval = cmpxchg_futex_value_locked(NULL, 0, 0);
+       if (curval == -EFAULT)
+               futex_cmpxchg_enabled = 1;

This is bogus on parisc, since page zero in kernel virtual space is the
gateway page for syscall entry, and should not be read from the kernel.
(That, and we really don't like the kernel faulting on its own address
 space...)

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] clean up show_stack
Kyle McMartin [Sat, 1 Mar 2008 18:30:19 +0000 (10:30 -0800)]
[PARISC] clean up show_stack

When we show_regs, we obviously have a struct pt_regs of the calling
frame. Use these in show_stack so we don't have the entire bogus call trace
up to the show_stack call.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] add pa8900 CPUs to hardware inventory
James Bottomley [Wed, 20 Feb 2008 21:53:02 +0000 (15:53 -0600)]
[PARISC] add pa8900 CPUs to hardware inventory

This patch adds the known pa8900 CPUs to the inventory list and removes
the Crestone Peak one which apparently never escaped into the wild.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] clean up include/asm-parisc/elf.h
Randolph Chung [Sun, 24 Feb 2008 18:44:21 +0000 (10:44 -0800)]
[PARISC] clean up include/asm-parisc/elf.h

Cleanup some cruft. No functionality changes.

Signed-off-by: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] move defconfig to arch/parisc/configs/
Adrian Bunk [Tue, 26 Feb 2008 19:55:17 +0000 (21:55 +0200)]
[PARISC] move defconfig to arch/parisc/configs/

This patch moves the default parisc defconfig to
arch/parisc/configs/generic_defconfig where it belongs and selects it as
the default defconfig through KBUILD_DEFCONFIG.

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] add back AD1889 MAINTAINERS entry
Thibaut VARENE [Wed, 20 Feb 2008 20:05:56 +0000 (21:05 +0100)]
[PARISC] add back AD1889 MAINTAINERS entry

Signed-off-by: Thibaut VARENE <T-Bone@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
16 years ago[PARISC] pdc_console: fix bizarre panic on boot
Kyle McMartin [Tue, 19 Feb 2008 07:34:34 +0000 (23:34 -0800)]
[PARISC] pdc_console: fix bizarre panic on boot

Commit 721fdf34167580ff98263c74cead8871d76936e6 introduced a subtle bug
by accidently removing the "static" from iodc_dbuf. This resulted in, what
appeared to be, a trap without *current set to a task. Probably the result of
a trap in real mode while calling firmware.

Also do other misc clean ups. Since the only input from firmware is non
blocking, share iodc_dbuf between input and output, and spinlock the
only callers.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] dump_stack in show_regs
Kyle McMartin [Tue, 19 Feb 2008 07:26:46 +0000 (23:26 -0800)]
[PARISC] dump_stack in show_regs

Originally, show_stack was used in BUG() output. However, a recent commit
changed it to print register state (no idea what that's supposed to help,
really...) and parisc was missing a backtrace because of it.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] pdc_stable: fix compile errors
Joel Soete [Tue, 19 Feb 2008 02:26:11 +0000 (18:26 -0800)]
[PARISC] pdc_stable: fix compile errors

Signed-off-by: Joel Soete <rubisher@scarlet.be>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] remove unused pdc_iodc_printf function
Kyle McMartin [Mon, 18 Feb 2008 22:26:41 +0000 (14:26 -0800)]
[PARISC] remove unused pdc_iodc_printf function

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] bump __NR_syscalls
Kyle McMartin [Mon, 18 Feb 2008 22:21:17 +0000 (14:21 -0800)]
[PARISC] bump __NR_syscalls

oops, forgot this in the previous commit.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] unbreak pgalloc.h
Kyle McMartin [Mon, 18 Feb 2008 22:16:26 +0000 (14:16 -0800)]
[PARISC] unbreak pgalloc.h

Commit 2f569afd9ced9ebec9a6eb3dbf6f83429be0a7b4 broke the compile
rather spectacularly. Fix code errors.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] move VMALLOC_* definitions to fixmap.h
Kyle McMartin [Mon, 18 Feb 2008 22:13:43 +0000 (14:13 -0800)]
[PARISC] move VMALLOC_* definitions to fixmap.h

They make way more sense here, really...

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] wire up timerfd syscalls
Kyle McMartin [Mon, 18 Feb 2008 22:00:18 +0000 (14:00 -0800)]
[PARISC] wire up timerfd syscalls

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years ago[PARISC] remove old timerfd syscall
Kyle McMartin [Mon, 18 Feb 2008 21:57:26 +0000 (13:57 -0800)]
[PARISC] remove old timerfd syscall

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
16 years agoACPI: Remove ACPI_CUSTOM_DSDT_INITRD option
Linus Torvalds [Sat, 15 Mar 2008 18:53:32 +0000 (11:53 -0700)]
ACPI: Remove ACPI_CUSTOM_DSDT_INITRD option

This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437
("ACPI: basic initramfs DSDT override support"), because the code simply
isn't ready.

It did ugly things to the init sequence to populate the rootfs image
early, but that just ended up showing other problems with the whole
approach.  The fact is, the VFS layer simply isn't initialized this
early, and the relevant ACPI code should either run much later, or this
shouldn't be done at all.

For 2.6.25, we'll just pick the latter option.  We can revisit this
concept later if necessary.

Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Renninger <trenn@suse.de>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: Len Brown <len.brown@intel.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Markus Gaugusch <dsdt@gaugusch.at>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agotifm_sd: DATA_CARRY is not boolean in tifm_sd_transfer_data()
Roel Kluin [Sat, 15 Mar 2008 15:00:38 +0000 (16:00 +0100)]
tifm_sd: DATA_CARRY is not boolean in tifm_sd_transfer_data()

DATA_CARRY is not boolean

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Sat, 15 Mar 2008 16:21:04 +0000 (09:21 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: Fix tbench regression in 2.6.25-rc1

16 years agosched: simplify sched_slice()
Ingo Molnar [Fri, 14 Mar 2008 21:17:08 +0000 (22:17 +0100)]
sched: simplify sched_slice()

Use the existing calc_delta_mine() calculation for sched_slice(). This
saves a divide and simplifies the code because we share it with the
other /cfs_rq->load users.

It also improves code size:

      text    data     bss     dec     hex filename
     42659    2740     144   45543    b1e7 sched.o.before
     42093    2740     144   44977    afb1 sched.o.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
16 years agosched: fix fair sleepers
Ingo Molnar [Fri, 14 Mar 2008 21:16:08 +0000 (22:16 +0100)]
sched: fix fair sleepers

Fair sleepers need to scale their latency target down by runqueue
weight. Otherwise busy systems will gain ever larger sleep bonus.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
16 years agosched: fix overload performance: buddy wakeups
Peter Zijlstra [Fri, 14 Mar 2008 20:12:12 +0000 (21:12 +0100)]
sched: fix overload performance: buddy wakeups

Currently we schedule to the leftmost task in the runqueue. When the
runtimes are very short because of some server/client ping-pong,
especially in over-saturated workloads, this will cycle through all
tasks trashing the cache.

Reduce cache trashing by keeping dependent tasks together by running
newly woken tasks first. However, by not running the leftmost task first
we could starve tasks because the wakee can gain unlimited runtime.

Therefore we only run the wakee if its within a small
(wakeup_granularity) window of the leftmost task. This preserves
fairness, but does alternate server/client task groups.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agosched: fix calc_delta_mine()
Ingo Molnar [Fri, 14 Mar 2008 21:20:01 +0000 (22:20 +0100)]
sched: fix calc_delta_mine()

lw->weight can be 0 for a short time during bootup.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
16 years agosched: fix update_load_add()/sub()
Ingo Molnar [Fri, 14 Mar 2008 22:48:28 +0000 (23:48 +0100)]
sched: fix update_load_add()/sub()

Clear the cached inverse value when updating load. This is needed for
calc_delta_mine() to work correctly when using the rq load.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
16 years agosched: min_vruntime fix
Peter Zijlstra [Fri, 14 Mar 2008 19:55:51 +0000 (20:55 +0100)]
sched: min_vruntime fix

Current min_vruntime tracking is incorrect and will cause serious
problems when we don't run the leftmost task for some reason.

min_vruntime does two things; 1) it's used to determine a forward
direction when the u64 vruntime wraps, 2) it's used to track the
leftmost vruntime to position newly enqueued tasks from.

The current logic advances min_vruntime whenever the current task's
vruntime advance. Because the current task may pass the leftmost task
still waiting we're failing the second goal. This causes new tasks to be
placed too far ahead and thus penalizes their runtime.

Fix this by making min_vruntime the min_vruntime of the waiting tasks by
tracking it in enqueue/dequeue, and compare against current's vruntime
to obtain the absolute minimum when placing new tasks.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agosched: fix race in schedule()
Hiroshi Shimamoto [Mon, 10 Mar 2008 18:01:20 +0000 (11:01 -0700)]
sched: fix race in schedule()

Fix a hard to trigger crash seen in the -rt kernel that also affects
the vanilla scheduler.

There is a race condition between schedule() and some dequeue/enqueue
functions; rt_mutex_setprio(), __setscheduler() and sched_move_task().

When scheduling to idle, idle_balance() is called to pull tasks from
other busy processor. It might drop the rq lock. It means that those 3
functions encounter on_rq=0 and running=1. The current task should be
put when running.

Here is a possible scenario:

   CPU0                               CPU1
    |                              schedule()
    |                              ->deactivate_task()
    |                              ->idle_balance()
    |                              -->load_balance_newidle()
rt_mutex_setprio()                     |
    |                              --->double_lock_balance()
    *get lock                          *rel lock
    * on_rq=0, ruuning=1               |
    * sched_class is changed           |
    *rel lock                          *get lock
    :                                  |
                                       :
                                   ->put_prev_task_rt()
                                   ->pick_next_task_fair()
                                       => panic

The current process of CPU1(P1) is scheduling. Deactivated P1, and the
scheduler looks for another process on other CPU's runqueue because CPU1
will be idle. idle_balance(), load_balance_newidle() and
double_lock_balance() are called and double_lock_balance() could drop
the rq lock. On the other hand, CPU0 is trying to boost the priority of
P1. The result of boosting only P1's prio and sched_class are changed to
RT. The sched entities of P1 and P1's group are never put. It makes
cfs_rq invalid, because the cfs_rq has curr and no leaf, but
pick_next_task_fair() is called, then the kernel panics.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Fri, 14 Mar 2008 23:49:41 +0000 (16:49 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: fw-ohci: shut up false compiler warning on PPC32
  firewire: fw-ohci: use dma_alloc_coherent for ar_buffer
  ieee1394: sbp2: fix for SYM13FW500 bridge (Datafab disk)
  firewire: fw-sbp2: fix for SYM13FW500 bridge (Datafab disk)
  firewire: update Kconfig help text
  firewire: warn on fatal condition in topology code
  firewire: fw-sbp2: set single-phase retry_limit
  firewire: fw-ohci: Apple UniNorth 1st generation support
  firewire: fw-ohci: PPC PMac platform code
  firewire: endianess annotations
  firewire: endianess fix

16 years agonfsd: fix oops on access from high-numbered ports
J. Bruce Fields [Fri, 14 Mar 2008 23:37:11 +0000 (19:37 -0400)]
nfsd: fix oops on access from high-numbered ports

This bug was always here, but before my commit 6fa02839bf9412e18e77
("recheck for secure ports in fh_verify"), it could only be triggered by
failure of a kmalloc().  After that commit it could be triggered by a
client making a request from a non-reserved port for access to an export
marked "secure".  (Exports are "secure" by default.)

The result is a struct svc_export with a reference count one too low,
resulting in likely oopses next time the export is accessed.

The reference counting here is not straightforward; a later patch will
clean up fh_verify().

Thanks to Lukas Hejtmanek for the bug report and followup.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agostruct export_operations: adjust comments to match current members
Marc Dionne [Fri, 14 Mar 2008 13:11:29 +0000 (13:11 +0000)]
struct export_operations: adjust comments to match current members

The comments in the definition of struct export_operations don't match the
current members.

Add a comment for the 2 new functions and remove 2 comments for unused ones.

Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agofirewire: fw-ohci: shut up false compiler warning on PPC32
Stefan Richter [Thu, 13 Mar 2008 23:27:49 +0000 (00:27 +0100)]
firewire: fw-ohci: shut up false compiler warning on PPC32

Shut up "may be used uninitialised in this function" warnings due to
PPC32's implementation of dma_alloc_coherent().

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agofirewire: fw-ohci: use dma_alloc_coherent for ar_buffer
Jarod Wilson [Wed, 12 Mar 2008 21:43:26 +0000 (17:43 -0400)]
firewire: fw-ohci: use dma_alloc_coherent for ar_buffer

Currently, we do nothing to guarantee we have a consistent DMA buffer for
asynchronous receive packets. Rather than doing several sync's following a
dma_map_single() to get consistent buffers, just switch to using
dma_alloc_coherent().

Resolves constant buffer failures on my own x86_64 laptop w/4GB of RAM and
likely to fix a number of other failures witnessed on x86_64 systems with
4GB of RAM or more.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agoieee1394: sbp2: fix for SYM13FW500 bridge (Datafab disk)
Stefan Richter [Tue, 11 Mar 2008 21:32:52 +0000 (22:32 +0100)]
ieee1394: sbp2: fix for SYM13FW500 bridge (Datafab disk)

Fix I/O errors due to SYM13FW500's inability to handle larger request
sizes.  Reported by Piergiorgio Sartor <piergiorgio.sartor@nexgo.de> for
firewire-sbp2 in https://bugzilla.redhat.com/show_bug.cgi?id=436879

This fix is necessary because sbp2's default request size limit has been
lifted since 2.6.25-rc1.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
16 years agofirewire: fw-sbp2: fix for SYM13FW500 bridge (Datafab disk)
Stefan Richter [Tue, 11 Mar 2008 21:32:03 +0000 (22:32 +0100)]
firewire: fw-sbp2: fix for SYM13FW500 bridge (Datafab disk)

Fix I/O errors due to SYM13FW500's inability to handle larger request
sizes.  Reported by Piergiorgio Sartor <piergiorgio.sartor@nexgo.de> in
https://bugzilla.redhat.com/show_bug.cgi?id=436879

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
16 years agofirewire: update Kconfig help text
Stefan Richter [Sat, 8 Mar 2008 23:27:20 +0000 (00:27 +0100)]
firewire: update Kconfig help text

Remove some less necessary information, point out that video1394 and
dv1394 should be blacklisted along with ohci1394.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agofirewire: warn on fatal condition in topology code
Stefan Richter [Sat, 8 Mar 2008 21:38:16 +0000 (22:38 +0100)]
firewire: warn on fatal condition in topology code

If this ever happens to anybody, we want to have it in his log.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agofirewire: fw-sbp2: set single-phase retry_limit
Jarod Wilson [Fri, 7 Mar 2008 06:43:01 +0000 (01:43 -0500)]
firewire: fw-sbp2: set single-phase retry_limit

Per the SBP-2 specification, all SBP-2 target devices must have a BUSY_TIMEOUT
register. Per the 1394-1995 specification, the retry_limt portion of the
register should be set to 0x0 initially, and set on the target by a logged in
initiator (i.e., a Linux host w/firewire controller(s)).

Well, as it turns out, lots of devices these days have actually moved on to
starting to implement SBP-3 compliance, which says that retry_limit should
default to 0xf instead (yes, SBP-3 stomps directly on 1394-1995, oops).

Prior to this change, the firewire driver stack didn't touch retry_limit, and
any SBP-3 compliant device worked fine, while SBP-2 compliant ones were unable
to retransmit when the host returned an ack_busy_X, which resulted in stalled
out I/O, eventually causing the SCSI layer to give up and offline the device.

The simple fix is for us to set retry_limit to 0xf in the register for all
devices (which actually matches what the old ieee1394 stack did).

Prior to this change, a hard disk behind an SBP-2 Prolific PL-3507 bridge chip
would routinely encounter buffer I/O errors and wind up offlined by the SCSI
layer. With this change, I've encountered zero I/O failures moving tens of GB
of data around.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agofirewire: fw-ohci: Apple UniNorth 1st generation support
Stefan Richter [Sat, 1 Mar 2008 01:47:15 +0000 (02:47 +0100)]
firewire: fw-ohci: Apple UniNorth 1st generation support

Mostly copied from ohci1394.c.  Necessary for some older Macs, e.g.
PowerBook G3 Pismo and early PowerBook G4 Titanium.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
16 years agofirewire: fw-ohci: PPC PMac platform code
Stefan Richter [Sat, 1 Mar 2008 01:42:56 +0000 (02:42 +0100)]
firewire: fw-ohci: PPC PMac platform code

Copied from ohci1394.c.  This code is necessary to prevent machine check
exceptions when reloading or resuming the driver.

Tested on a 1st generation PowerBook G4 Titanium, which also needs the
pci_probe() hunk.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
I was able to reproduce the system exception on resume with a 3rd-gen
Titanium PowerBook G4 667, and this patch does let the system resume
successfully now.

Not quite clear if there was possibly an updated version coming using
pci_enable_device() instead of the pair of pmac_call_feature() calls,
but either way, this is a definite must-have, at least for older ppc
macs -- my Aluminum PowerBook G4/1.67 suspends and resumes without this
patch just fine.

Signed-off-by: Jarod Wilson <jwilson@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
16 years agofirewire: endianess annotations
Stefan Richter [Sat, 23 Feb 2008 11:24:57 +0000 (12:24 +0100)]
firewire: endianess annotations

Kills warnings from 'make C=1 CHECKFLAGS="-D__CHECK_ENDIAN__" modules':

drivers/firewire/fw-transaction.c:771:10: warning: incorrect type in assignment (different base types)
drivers/firewire/fw-transaction.c:771:10:    expected unsigned int [unsigned] [usertype] <noident>
drivers/firewire/fw-transaction.c:771:10:    got restricted unsigned int [usertype] <noident>
drivers/firewire/fw-transaction.h:93:10: warning: incorrect type in assignment (different base types)
drivers/firewire/fw-transaction.h:93:10:    expected unsigned int [unsigned] [usertype] <noident>
drivers/firewire/fw-transaction.h:93:10:    got restricted unsigned int [usertype] <noident>
drivers/firewire/fw-ohci.c:1490:8: warning: restricted degrades to integer
drivers/firewire/fw-ohci.c:1490:35: warning: restricted degrades to integer
drivers/firewire/fw-ohci.c:1516:5: warning: cast to restricted type

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
16 years agofirewire: endianess fix
Stefan Richter [Sat, 23 Feb 2008 11:24:17 +0000 (12:24 +0100)]
firewire: endianess fix

The generation of incoming requests was filled in in wrong byte order on
machines with big endian CPU.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Thu, 13 Mar 2008 20:25:32 +0000 (13:25 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IPoIB: Allocate priv->tx_ring with vmalloc()
  IPoIB/cm: Set tx_wr.num_sge in connected mode post_send()
  IPoIB: Don't drop multicast sends when they can be queued
  IB/ipath: Reset the retry counter for RDMA_READ_RESPONSE_MIDDLE packets
  IB/ipath: Fix error completion put on send CQ instead of recv CQ
  IB/ipath: Fix RC QP initialization
  IB/ipath: Fix potentially wrong RNR retry counter returned in ipath_query_qp()
  IB/ipath: Fix IB compliance problems with link state vs physical state

16 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
Linus Torvalds [Thu, 13 Mar 2008 20:17:25 +0000 (13:17 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  async_tx: checkpatch says s/__FUNCTION__/__func__/g
  iop-adma.c: replace remaining __FUNCTION__ occurrences
  fsldma: Add a completed cookie updated action in DMA finish interrupt.
  fsldma: Add device_prep_dma_interrupt support to fsldma.c
  dmaengine: Fix a bug about BUG_ON() on DMA engine capability DMA_INTERRUPT.
  fsldma: Fix fsldma.c warning messages when it's compiled under PPC64.

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6
Linus Torvalds [Thu, 13 Mar 2008 20:16:22 +0000 (13:16 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6:
  PCI: fix issue with busses registering multiple times in sysfs

16 years agoavoid endless loops in lib/swiotlb.c
Jan Beulich [Thu, 13 Mar 2008 09:13:30 +0000 (09:13 +0000)]
avoid endless loops in lib/swiotlb.c

Commit 681cc5cd3efbeafca6386114070e0bfb5012e249 ("iommu sg merging:
swiotlb: respect the segment boundary limits") introduced two
possibilities for entering an endless loop in lib/swiotlb.c:

 - if max_slots is zero (possible if mask is ~0UL)
 - if the number of slots requested fits into a swiotlb segment, but is
   too large for the part of a segment which remains after considering
   offset_slots

This fixes them

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...
Linus Torvalds [Thu, 13 Mar 2008 20:13:47 +0000 (13:13 -0700)]
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (32 commits)
  ACPI: thermal: show temperature in millidegree Celsius
  thermal: fix generic thermal I/F for hwmon
  acer-wmi: build depends on i8042
  documentation:  Move power-related files to Documentation/power/
  ACPI: buffer array too short in drivers/acpi/system.c
  acer-wmi: Add DMI quirk for mail LED support on Acer Aspire 3610/ 5610
  acer-wmi: Fix DSDT path in documentation
  acer-wmi: Make device detection error messages more descriptive
  laptops: move laptop-mode.txt to Documentation/laptops/
  ACPICA: Warn if packages with invalid references are evaluated
  ACPI: add _PRT quirks to work around broken firmware
  Hibernation: Fix mark_nosave_pages()
  ACPI: Ignore _BQC object when registering backlight device
  ACPI: WMI: Clean up handling of spec violating data blocks
  acer-wmi: Don't warn if mail LED cannot be detected
  acer-wmi: Rename mail LED correctly & remove hardcoded colour
  ACPI: use ACPI_DEBUG_PRINT instead of printk in acpi_processor_hotplug_notify()
  ACPI: button: make real parent for input devices in device tree
  toshiba_acpi: Enable autoloading
  ACPI: EC: Handle IRQ storm on Acer laptops
  ...

16 years agoblock: floppy: fix rmmod lockup
Jiri Slaby [Thu, 13 Mar 2008 19:32:43 +0000 (12:32 -0700)]
block: floppy: fix rmmod lockup

Floppy rmmod locks up when no such hardware was initialized, since there is
nobody to wake the remove code up.  Remove the completion, because release is
called during platform_unregister anyway.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokernel-doc: set verbose mode via environment
Randy Dunlap [Thu, 13 Mar 2008 19:32:43 +0000 (12:32 -0700)]
kernel-doc: set verbose mode via environment

Honor the environment variable "KBUILD_VERBOSE=1" (as set by make V=1) to
enable verbose mode in scripts/kernel-doc.  Useful for getting more info and
warnings from kernel-doc.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoalpha: use iommu_is_span_boundary helper function
FUJITA Tomonori [Thu, 13 Mar 2008 19:32:40 +0000 (12:32 -0700)]
alpha: use iommu_is_span_boundary helper function

iommu_is_span_boundary in lib/iommu-helper.c was exported for PARISC IOMMUs
(commit 3715863aa142c4f4c5208f5f3e5e9bac06006d2f).  Alpha's IOMMU can use it.

This removes the check on the boundary size alignment because
iommu_is_span_boundary does.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Acked-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agochar: riscom, fix rc_board indexing
Jiri Slaby [Thu, 13 Mar 2008 19:32:39 +0000 (12:32 -0700)]
char: riscom, fix rc_board indexing

In riscom8_init_module, rc_board should be indexed by i, not by 0, otherwise
the loop is useless.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agospi_bitbang: short transfer status fix
Jan Nikitenko [Thu, 13 Mar 2008 19:32:39 +0000 (12:32 -0700)]
spi_bitbang: short transfer status fix

SPI controller drivers return number of bytes actually transfered from
bitbang->txrx_bufs() method.  This updates handling of short transfers (where
the transfer size is less than requested):

 - Even zero byte short transfers should report errors;
 - Include short transfers in the total of transferred bytes;
 - Use EREMOTEIO (like USB) not EMSGSIZE to report short transfers

Short transfers don't normally mean invalid message sizes, but if the
underlying controller driver needs to use EMSGSIZE it can still do so.

[db: fix two more minor issues]
Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoau1550_spi: fix prototype of irq handler
Jan Nikitenko [Thu, 13 Mar 2008 19:32:38 +0000 (12:32 -0700)]
au1550_spi: fix prototype of irq handler

Remove struct pt_regs *regs from prototype of au1550_spi_irq handler to avoid
warning in request_irq().  Also fix comment type leadin.

Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com>
Signed-off-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoh8300: fix recent uaccess breakage
Yoshinori Sato [Thu, 13 Mar 2008 19:32:37 +0000 (12:32 -0700)]
h8300: fix recent uaccess breakage

Al Viro wrote:
>
>  After that commit in asm-h8300/uaccess.h we have
>
> #define get_user(x, ptr)                                        \
> ({                                                              \
>     int __gu_err = 0;                                           \
>     uint32_t __gu_val = 0;                              \
>     ^^^^^^^^^^^^^^^^^
>     switch (sizeof(*(ptr))) {                                   \
>     case 1:                                                     \
>     case 2:                                                     \
>     case 4:                                                     \
>         __gu_val = *(ptr);                                      \
>         break;                                                  \
>     case 8:                                                     \
>         memcpy(&__gu_val, ptr, sizeof (*(ptr)));                \
>                                ^^^^^^^^^^^^^^^^
>
> which, of course, is FUBAR whenever we actually hit that case - memcpy of
> 8 bytes into uint32_t is obviously wrong.  Why don't we simply do

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agopagemap: proper read error handling
Marcelo Tosatti [Thu, 13 Mar 2008 19:32:35 +0000 (12:32 -0700)]
pagemap: proper read error handling

Fix pagemap_read() error handling by releasing acquired resources and checking
for get_user_pages() partial failure.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agosmackfs: do not trust `count' in inodes write()s
Ahmed S. Darwish [Thu, 13 Mar 2008 19:32:34 +0000 (12:32 -0700)]
smackfs: do not trust `count' in inodes write()s

Smackfs write() implementation does not put a higher bound on the number of
bytes to copy from user-space.  This may lead to a DOS attack if a malicious
`count' field is given.

Assure that given `count' is exactly the length needed for a /smack/load rule.
 In case of /smack/cipso where the length is relative, assure that `count'
does not exceed the size needed for a buffer representing maximum possible
number of CIPSO 2.2 categories.

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoasync_tx: checkpatch says s/__FUNCTION__/__func__/g
Dan Williams [Fri, 14 Mar 2008 00:45:28 +0000 (17:45 -0700)]
async_tx: checkpatch says s/__FUNCTION__/__func__/g

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agoiop-adma.c: replace remaining __FUNCTION__ occurrences
Harvey Harrison [Fri, 14 Mar 2008 00:45:28 +0000 (17:45 -0700)]
iop-adma.c: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agofsldma: Add a completed cookie updated action in DMA finish interrupt.
Zhang Wei [Fri, 14 Mar 2008 00:45:28 +0000 (17:45 -0700)]
fsldma: Add a completed cookie updated action in DMA finish interrupt.

The patch 'fsldma: do not cleanup descriptors in hardirq context'
(commit 222ccf9ab838a1ca7163969fabd2cddc10403fb5) removed descriptors
cleanup function to tasklet but the completed cookie do not updated.
Thus, the DMA controller will get lots of duplicated transfer
interrupts. Just make a completed cookie update in interrupt handler.
And keep other cleanup jobs in tasklet function.

Tested-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agofsldma: Add device_prep_dma_interrupt support to fsldma.c
Zhang Wei [Fri, 14 Mar 2008 00:45:28 +0000 (17:45 -0700)]
fsldma: Add device_prep_dma_interrupt support to fsldma.c

This is a bug that I assigned DMA_INTERRUPT capability to fsldma
but missing device_prep_dma_interrupt function. For a bug in
dmaengine.c the driver passed BUG_ON() checking. The patch fixes it.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agodmaengine: Fix a bug about BUG_ON() on DMA engine capability DMA_INTERRUPT.
Zhang Wei [Fri, 14 Mar 2008 00:45:28 +0000 (17:45 -0700)]
dmaengine: Fix a bug about BUG_ON() on DMA engine capability DMA_INTERRUPT.

The device->device_prep_dma_interrupt function is used by
DMA_INTERRUPT capability, not DMA_ZERO_SUM.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agofsldma: Fix fsldma.c warning messages when it's compiled under PPC64.
Zhang Wei [Thu, 13 Mar 2008 17:45:27 +0000 (10:45 -0700)]
fsldma: Fix fsldma.c warning messages when it's compiled under PPC64.

There are warning messages reported by Stephen Rothwell with
ARCH=powerpc allmodconfig build:

drivers/dma/fsldma.c: In function 'fsl_dma_prep_memcpy':
drivers/dma/fsldma.c:439: warning: comparison of distinct pointer types
lacks a cast
drivers/dma/fsldma.c: In function 'fsl_chan_xfer_ld_queue':
drivers/dma/fsldma.c:584: warning: format '%016llx' expects type 'long long
unsigned int', but argument 4 has type 'dma_addr_t'
drivers/dma/fsldma.c: In function 'fsl_dma_chan_do_interrupt':
drivers/dma/fsldma.c:668: warning: format '%x' expects type 'unsigned int',
but argument 5 has type 'dma_addr_t'
drivers/dma/fsldma.c:684: warning: format '%016llx' expects type 'long long
unsigned int', but argument 4 has type 'dma_addr_t'
drivers/dma/fsldma.c:684: warning: format '%016llx' expects type 'long long
unsigned int', but argument 5 has type 'dma_addr_t'
drivers/dma/fsldma.c:701: warning: format '%02x' expects type 'unsigned
int', but argument 4 has type 'dma_addr_t'
drivers/dma/fsldma.c: In function 'fsl_dma_self_test':
drivers/dma/fsldma.c:840: warning: format '%d' expects type 'int', but
argument 5 has type 'size_t'
drivers/dma/fsldma.c: In function 'of_fsl_dma_probe':
drivers/dma/fsldma.c:1010: warning: format '%08x' expects type 'unsigned
int', but argument 5 has type 'resource_size_t'

This patch fixed the above warning messages.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
16 years agoPCI: fix issue with busses registering multiple times in sysfs
Greg Kroah-Hartman [Thu, 13 Mar 2008 04:48:03 +0000 (21:48 -0700)]
PCI: fix issue with busses registering multiple times in sysfs

PCI busses can be registered multiple times, so we need to detect if we
have registered our bus structure in sysfs already.  If so, don't do it
again.

Thanks to Guennadi Liakhovetski <g.liakhovetski@gmx.de> for reporting
the problem, and to Linus for poking me to get me to believe that it was
a real problem.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoMerge branches 'release' and 'doc' into release
Len Brown [Thu, 13 Mar 2008 05:59:53 +0000 (01:59 -0400)]
Merge branches 'release' and 'doc' into release