If one attempts to create a device driver recovery sequence that
does not depend on a hard reset of the device, but simply just
attempts to resume processing, then one discovers that the
recovery sequence implemented on powerpc is not quite right.
This patch fixes this up.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

The ack_irq macro is unused and conflicts with James' work to template
the generic irq code.  mask_irq and unmask_irq are also unused, so delete
those macros too.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Paul Mackerras <paulus@samba.org>

The current PowerPC code makes pci_unmap_addr(), pci_unmap_addr_set(),
and friends trivial for all 32-bit kernels.  This is reasonable, since
for those kernels it is true that pci_unmap_single() does not need the
DMA address from the original DMA mapping -- in fact, it is a NOP.

However, I recently tried the tg3 driver on a PowerPC 440SPe machine,
which runs a 32-bit kernel and has non-cache-coherent PCI DMA.  I
found that the tg3 driver crashed in pci_dma_sync_single_for_cpu(),
since for non-coherent systems, that function must invalidate the
cache for the DMA address range requested, and therefore it does use
the address passed in.  tg3 uses a DMA address it stashes away with
pci_unmap_addr_set() and retrieves with pci_unmap_addr().  Of course,
since pci_unmap_addr() is defined to (0) right now, this doesn't work.

It seems to me that the tg3 driver is using pci_unmap_addr() in a
legitimate way -- I wouldn't want to have to teach all drivers that
they should use pci_unmap_addr() if they only need the address for
unmapping functions, but if they want the pci_dma_sync functions, then
they have to store the DMA address without the helper macros.
The right fix therefore seems to be in the definition of the macros in
<asm/pci.h> -- we should use the trivial versions only for 32-bit
kernels for coherent systems, and the real versions for both 64-bit
kernels and non-coherent systems.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Add missing include in rom.c.  Fixes this build error when CONFIG_MTD=y:

  arch/powerpc/sysdev/rom.c:26: error: implicit declaration of function
  of_platform_device_create
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

It uses #ifdef __KERNEL__, so needs to be processed with unifdef.
Signed-off-by: Arnd Bergann <arnd.bergmann@de.ibm.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Purely cosmetic.  Change pSeries to pseries inline with other parts of the
kernel, and fix an overly long line.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

To support cpu hotplug on pseries we require two RTAS tokens.  The cpu
hotplug machinery should only be wired up if these tokens are found in
the device tree.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Move the rest of the hotplug cpu code from platforms/pseries/smp.c into
platforms/pseries/hotplug-cpu.c.

Wire up the smp_ops callbacks and the notifier in the hotplug cpu initcall,
rather than in smp_init_pseries().  No change in behaviour.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Move pSeries_mach_cpu_die() into platforms/pseries/hotplug-cpu.c,
this allows rtas_stop_self() to be static so remove the prototype.

Wire up pSeries_mach_cpu_die() in the initcall, rather than statically
in setup.c, the initcall will still run prior to the cpu hotplug code
being callable, so there should be no change in behaviour.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

As the first step in consolidating the pseries hotplug cpu code,
create platforms/pseries/hotplug-cpu.c and move rtas_stop_self()
into it.  Do the rtas token initialisation in a new initcall, rather
than rtas_initialize().
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

Make sure that the pmu is not initialised unless we are running on a cell.
Also make the init routine static.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (55 commits)
  ieee1394: sbp2: code formatting around work_struct stuff
  ieee1394: nodemgr: remove a kcalloc
  ieee1394: conditionally export ieee1394_bus_type
  ieee1394: Consolidate driver registering
  ieee1394: sbp2: convert from PCI DMA to generic DMA
  ieee1394: nodemgr: spaces to tabs
  ieee1394: nodemgr: fix deadlock in shutdown
  ieee1394: nodemgr: remove duplicate assignment
  sbp2: make 1bit bitfield unsigned
  ieee1394: schedule *_oui sysfs attributes for removal
  ieee1394: schedule unused symbol exports for removal
  ieee1394: dv1394: schedule for feature removal
  ieee1394: raw1394: defer feature removal of old isoch interface
  ieee1394: ohci1394: call PMac code in shutdown only for proper machines
  ieee1394: ohci1394: reformat PPC_PMAC platform code
  ieee1394: ohci1394: add PPC_PMAC platform code to driver probe
  ieee1394: sbp2: wrap two functions into one
  ieee1394: sbp2: update comment on things to do
  ieee1394: sbp2: use list_move_tail()
  ieee1394: sbp2: more concise names for types and variables
  ...

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits)
  [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked
  [ARM] 4001/1: S3C24XX: shorten reboot time
  [ARM] 3983/2: remove unused argument to __bug()
  [ARM] 4000/1: Osiris: add third serial port in
  [ARM] 3999/1: RX3715: suspend to RAM support
  [ARM] 3998/1: VR1000: LED platform devices
  [ARM] 3995/1: iop13xx: add iop13xx support
  [ARM] 3968/1: iop13xx: add iop13xx_defconfig
  [ARM] Update mach-types
  [ARM] Allow gcc to optimise arm_add_memory a little more
  [ARM] 3991/1: i.MX/MX1 high resolution time source
  [ARM] 3990/1: i.MX/MX1 more precise PLL decode
  [ARM] 3986/1: H1940: suspend to RAM support
  [ARM] 3985/1: ixp4xx clocksource cleanup
  [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2)
  [ARM] 3994/1: ixp23xx: fix handling of pci master aborts
  [ARM] 3981/1: sched_clock for PXA2xx
  [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit
  [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period
  [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter
  ...

* 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] replace kmalloc+memset with kzalloc
  [IA64] resolve name clash by renaming is_available_memory()
  [IA64] Need export for csum_ipv6_magic
  [IA64] Fix DISCONTIGMEM without VIRTUAL_MEM_MAP
  [PATCH] Add support for type argument in PAL_GET_PSTATE
  [IA64] tidy up return value of ip_fast_csum
  [IA64] implement csum_ipv6_magic for ia64.
  [IA64] More Itanium PAL spec updates
  [IA64] Update processor_info features
  [IA64] Add se bit to Processor State Parameter structure
  [IA64] Add dp bit to cache and bus check structs
  [IA64] SN: Correctly update smp_affinty mask
  [IA64] sparse cleanups
  [IA64] IA64 Kexec/kdump

Merge:
 Atmel AT91RM9200 and AT91SAM9260 changes
 General ARM developments
 Disconfiguous memory cleanups
 64-bit/32-bit division and sched_clock extension patches
 EP93xx support changes
 IOP support changes
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

* 'intx' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
  PCI MSI: always toggle legacy-INTx-enable bit upon MSI entry/exit

Do not bother masking/unmasking the parent IRQ
for the mulitplexed EINT irqs, as masking the
leaf seems to be fine.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Cut down the time between requesting a reboot
and actually getting the reboot to happen by
a quarter.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

The current code (prior to this change) would disable the PCI INTx
legacy interrupt when enabling MSI... but only on PCI Express.  We
should do this for all MSI devices, for safety's sake.
Signed-off-by: Jeff Garzik <jeff@garzik.org>

It appears that include/asm-arm/bug.h requires include/linux/stddef.h
for the definition of NULL. It seems that stddef.h was always included
indirectly in most cases, and that issue was properly fixed a while ago.

Then commit 5047f09b incorrectly reverted
change from commit ff10952a (bad dwmw2)
and the problem recently resurfaced.

Because the third argument to __bug() is never used anyway, RMK suggested
getting rid of it entirely instead of readding #include <linux/stddef.h>
which this patch does.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Add the mapping for the third S3C2440 serial
port into the default serial devices for the
Osiris.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

The RX3715 is similar to the H1940 in the way
that suspend to RAM works, so we can use most
of the extant support for the H1940 with only
a few modifictions
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Support for the GPIO attached LEDs on the VR1000
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Merge is finished, can bring the code in readable style again.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Was I sleepwalking when I wrote this?
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Follow-up to patch "Consolidate driver registering":
Since I plan the lifetime of Linux 2.6.20 to be the deprecation phase
of CONFIG_IEEE1394_EXPORT_FULL_API, it seems fair to keep all previously
exported symbols available with this option until this phase is over.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

This patch consolidates some bookkeeping for driver registering. It
closely models what pci_register_driver() does. The main addition is
that the owner of the driver is set, so we get a proper symlink
for /sys/bus/ieee1394/driver/*/module.

Also moves setting of name and bus type into nodemgr. Because of this,
we can remove the EXPORT_SYMBOL for ieee1394_bus_type, since it's now
only used in ieee1394.ko.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

API conversion without change in functionality
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

whitespace pedantry
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

If "modprobe ohci1394" was quickly followed by "modprobe -r ohci1394",
say with 1 second pause in between, the modprobe -r got stuck in
uninterruptible sleep in kthread_stop.  At the same time the knodemgrd
slept uninterruptibly in bus_rescan_devices_helper.  That's because
driver_detach took the semaphore of the PCI device and
bus_rescan_devices_helper wanted to take the semaphore of the FireWire
host device's parent, which is the same semaphore. This was a regression
since Linux 2.6.16, commit bf74ad5b,
"Hold the device's parent's lock during probe and remove".

The fix (or workaround) adds a dummy driver to the hpsb_host device. Now
bus_rescan_devices_helper won't scan the host device anymore.  This
doesn't hurt since we have no drivers which will bind to these devices
and it is unlikely that there will ever be such a driver.  The dummy
driver is befittingly presented as a representation of ieee1394 itself.

Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=6706Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

A signed single-bit bitfield doesn't make much sense. Make it unsigned.
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

There is no manpower available to reform oui.db into a library for use
in more kernel subsystems.  The low ratio of usefulness to size and the
occasional need to update oui.db from IEEE's official list suggest to
drop oui.db.  I plan to make a userspace script available which
translates the remaining numeric sysfs attributes to names of
organizations.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

This also means that former parts of ieee1394's API will be subject to
change or removal.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Known to be affected:
 - libdc1394: prefers video1394 for now, old-style raw1394 support might
   be dropped eventually
 - OpenH323 PWLib, AVC video input module: uses libraw1394's old API
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

There has been an if(...) missing, for ages.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Adjust whitespace and line lengths
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=7431
iBook G3 threw a machine check exception and put the display backlight
to full brightness after ohci1394 was unloaded and reloaded.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

Move the body of a function into its only caller.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>