Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Remove the semaphores from the get routine. These do not 
appear to be protecting anything that I can make out, 
and they also do not seem to be required by the hotplug
driver.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

At first blush, the disable_slot() routine does not look
at all like its symmetric with the enable_slot() routine;
as it seems to call a very different set of routines.
However, this is easily fixed: pcibios_remove_pci_devices()
does the right thing.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fix up the documentation: the rpaphp_add_slot() does not actually
handle embedded slots: in fact, it ignores them. Fix the flow of
control in the routine that checks for embedded slots.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Rename rpaphp_register_pci_slot() because its easy to confuse
with  rpaphp_register_slot() even though it does something 
completely different. Rename it to rpaphp_enable_slot() because
its almost identical to enbale_slot().
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Eliminate the tail call to rpaphp_register_slot() 
by placing it in the caller. This will help later
dis-entanglement.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The rpaphp_set_attention_status() routine seems to be a wrapper
around a single rtas call. Abolish it.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Delete another stovepipe: a call to a routine which does nothing.
Remove un-needed semaphore as well.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove another stove-pipe; this funcion was called from
two different places, with a compile-time const that is
then run-time checked to perform two different things.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove another stovepipe: a call which wraps another call, and
just adds printks.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The routine that called an alloc should be the same routine that 
calles the mathcing free, if anything in the middle failed.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Cleanup cruft: remove the global "num_slots" variable; 
although scattered across multiple files, it is used only 
once, in a debug statement.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Cleanup the flow of control for rpaphp_add_slot(), so as to
make it easier to read. The ext patch will fix a bug in this 
same code. 
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This reverts commit d05c7a80,
which included changes which should go via other subsystem
maintainers.

Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Change the criterion that RPA PCI Hotplug and RPA DLPAR use when
determining the hotplug capabilities of a given device node.  The
"device_type" property is less consistent than "name" across PCI nodes
on newer hardware.
Signed-off-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This makes it possible to build pci hotplug drivers outside of the main
kernel tree, and Sam keeps telling me to move local header files to
their proper places...
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Now that get_property() returns a void *, there's no need to cast its
return value. Also, treat the return value as const, so we can
constify get_property later.

pseries platform changes.

Built for pseries_defconfig
Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

The init function for the RPA PCI Hotplug driver returns -ENODEV in the
case that no hotplug-capable slots are detected in the system.  This is
bad, since hot-capable slots can be added after boot to a purely virtual
POWER partition.  This is also bad because DLPAR I/O operations depend
on the rpaphp module.

Change the rpaphp init module to return success for the case of
partitions that own no hotplug-capable slots at boot.  Such slots can be
dynamically added after boot.
Signed-off-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Minor cleanup. Move structure initializer to bottom of file,
this allows elimination of eyeball-strain-inducing forward
declarations.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Acked-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Minor cleanup. Add the prefix rpaphp_* to several generic-sounding routines.
Remove rpaphp_remove_slot(), which is a one-liner.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Acked-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove general baroqueness.  The function rpaphp_enable_pci_slot()
has a fairly simple logic structure, once all of the debug printk's
are removed. Its called from only one place, and that place also
has a very simple structure once he printk's are removed.  Merge
the two together.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Acked-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove general baroqueness.  The function rpaphp_unconfig_pci_adapter()
is really just three lines of code, once all the dbg printks are removed.
And its called in only one place. So replace the call by the thre lines.
Also, provide proper semaphore locking in the affected function
disable_slot()
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Acked-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is a minor patch to the ppc64 PCI hotplug code; it makes the call to
rpaphp_unconfig_pci_adapter() symmetric with respect to the call to
rpaphp_config_pci_adapter().  I discussed this with John Rose, who
had provided the last round of changes for these functions; he
appearently had this patch but somehow failed to mail it out.

Tested. (added/removed device).
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>

 drivers/pci/hotplug/rpaphp.h      |    3 ++-
 drivers/pci/hotplug/rpaphp_core.c |    5 ++++-
 drivers/pci/hotplug/rpaphp_pci.c  |   11 +++--------
 3 files changed, 9 insertions(+), 10 deletions(-)

Currently rpaphp registers the following bus types as hotplug slots:
1) Actual PCI Hotplug slots
2) Embedded/Internal PCI slots
3) PCI Host Bridges

The second and third bus types are not actually direct parents of
removable adapters.  As such, the rpaphp has special case code to fake
results for attributes like power, adapter status, etc.  This patch
removes types 2 and 3 from the rpaphp module.

This patch also changes the DLPAR module so that slots can be
DLPAR-added/removed without having been designated as hotplug-capable.
Signed-off-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Currently, rpaphp registers Virtual I/O slots as hotplug slots.  The
only purpose of this registration is to ensure that the VIO subsystem
is notified of new VIO buses during DLPAR adds.  Similarly, rpaphp
notifies the VIO subsystem when a VIO bus is DLPAR-removed.  The rpaphp
module has special case code to fake results for attributes like power,
adapter status, etc.

The VIO register/unregister functions could just as easily be made from
the DLPAR module.  This patch moves the VIO registration calls to the
DLPAR module, and removes the VIO fluff from rpaphp altogether.
Signed-off-by: NJohn Rose <johnrose@austin.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!