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Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system
Pull "Disintegrate and delete asm/system.h" from David Howells:
"Here are a bunch of patches to disintegrate asm/system.h into a set of
separate bits to relieve the problem of circular inclusion
dependencies.
I've built all the working defconfigs from all the arches that I can
and made sure that they don't break.
The reason for these patches is that I recently encountered a circular
dependency problem that came about when I produced some patches to
optimise get_order() by rewriting it to use ilog2().
This uses bitops - and on the SH arch asm/bitops.h drags in
asm-generic/get_order.h by a circuituous route involving asm/system.h.
The main difficulty seems to be asm/system.h. It holds a number of
low level bits with no/few dependencies that are commonly used (eg.
memory barriers) and a number of bits with more dependencies that
aren't used in many places (eg. switch_to()).
These patches break asm/system.h up into the following core pieces:
(1) asm/barrier.h
Move memory barriers here. This already done for MIPS and Alpha.
(2) asm/switch_to.h
Move switch_to() and related stuff here.
(3) asm/exec.h
Move arch_align_stack() here. Other process execution related bits
could perhaps go here from asm/processor.h.
(4) asm/cmpxchg.h
Move xchg() and cmpxchg() here as they're full word atomic ops and
frequently used by atomic_xchg() and atomic_cmpxchg().
(5) asm/bug.h
Move die() and related bits.
(6) asm/auxvec.h
Move AT_VECTOR_SIZE_ARCH here.
Other arch headers are created as needed on a per-arch basis."
Fixed up some conflicts from other header file cleanups and moving code
around that has happened in the meantime, so David's testing is somewhat
weakened by that. We'll find out anything that got broken and fix it..
* tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
Delete all instances of asm/system.h
Remove all #inclusions of asm/system.h
Add #includes needed to permit the removal of asm/system.h
Move all declarations of free_initmem() to linux/mm.h
Disintegrate asm/system.h for OpenRISC
Split arch_align_stack() out from asm-generic/system.h
Split the switch_to() wrapper out of asm-generic/system.h
Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
Create asm-generic/barrier.h
Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
Disintegrate asm/system.h for Xtensa
Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
Disintegrate asm/system.h for Tile
Disintegrate asm/system.h for Sparc
Disintegrate asm/system.h for SH
Disintegrate asm/system.h for Score
Disintegrate asm/system.h for S390
Disintegrate asm/system.h for PowerPC
Disintegrate asm/system.h for PA-RISC
Disintegrate asm/system.h for MN10300
...
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it. Performed with the following command:
perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`
Signed-off-by: David Howells <dhowells@redhat.com>
Pull #3 ARM updates from Russell King:
"This adds gpio support to soc_common, allowing an amount of code to be
deleted from each PCMCIA socket driver for the PXA/SA11x0 SoCs."
* 'pcmcia' of git://git.linaro.org/people/rmk/linux-arm:
PCMCIA: sa1111: rename sa1111 socket drivers to have sa1111_ prefix.
PCMCIA: make lubbock socket driver part of sa1111_cs
PCMCIA: add Kconfig control for building sa11xx_base.c
PCMCIA: sa1111: jornada720: no need to disable IRQs around sa1111_set_io
PCMCIA: sa1111: pass along sa1111_pcmcia_configure_socket() failure code
PCMCIA: soc_common: remove explicit wrprot initialization in socket drivers
PCMCIA: soc_common: remove soc_pcmcia_*_irqs functions
PCMCIA: sa11x0: h3600: convert to use new irq/gpio management
PCMCIA: sa11x0: simpad: convert to use new irq/gpio management
PCMCIA: sa11x0: shannon: convert to use new irq/gpio management
PCMCIA: sa11x0: nanoengine: convert reset handling to use GPIO subsystem
PCMCIA: sa11x0: nanoengine: convert to use new irq/gpio management
PCMCIA: sa11x0: cerf: convert reset handling to use GPIO subsystem
PCMCIA: sa11x0: cerf: convert to use new irq/gpio management
PCMCIA: sa11x0: assabet: convert to use new irq/gpio management
PCMCIA: sa1111: use new per-socket irq/gpio infrastructure
PCMCIA: pxa: convert PXA socket drivers to use new irq/gpio management
PCMCIA: soc_common: add GPIO support for card status signals
PCMCIA: soc_common: move common initialization into soc_common
If pxa2xx_drv_pcmcia_add_one fails, it will go to err1 error path.
Add a missing clk_put in the error path.
Checking the ret value after the for loop is redundant, it is always false.
Thus remove the redundant checking.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Move common socket initialization into soc_common.c.
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix:
ERROR: "pxa2xx_configure_sockets" [drivers/pcmcia/pxa2xx_lubbock_cs.ko] undefined!
by exporting the required function.
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
After 2.6.34 changes, __pxa2xx_drv_pcmcia_probe() was replaced by
sa1111_pcmcia_add(). That unfortunately means that configure_sockets()
is not called, leading to MECR not being set properly, leading to
strange crashes.
Tested on pxa255+sa1111, I do not have lubbock board nearby. Perhaps
cleaner solution exists?
Signed-off-by: Pavel Machek <pma@sysgo.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
On PXA320, there's only one PCMCIA slot available. Check for cases where the
user would want to register multiple. Also, rework failpath.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This is important because on PXA3xx, the physical mapping of SMEMC registers
differs from the one on PXA2xx. In order to get PCMCIA working on both PXA2xx
and PXA320, the PCMCIA driver was adjusted accordingly as well.
Also, various places in the kernel had to be patched to use
__raw_read/__raw_write.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
pcmcia: avoid buffer overflow in pcmcia_setup_isa_irq
pcmcia: do not request windows if you don't need to
pcmcia: insert PCMCIA device resources into resource tree
pcmcia: export resource information to sysfs
pcmcia: use struct resource for PCMCIA devices, part 2
pcmcia: remove memreq_t
pcmcia: move local definitions out of include/pcmcia/cs.h
pcmcia: do not use io_req_t when calling pcmcia_request_io()
pcmcia: do not use io_req_t after call to pcmcia_request_io()
pcmcia: use struct resource for PCMCIA devices
pcmcia: clean up cs.h
pcmcia: use pcmica_{read,write}_config_byte
pcmcia: remove cs_types.h
pcmcia: remove unused flag, simplify headers
pcmcia: remove obsolete CS_EVENT_ definitions
pcmcia: split up central event handler
pcmcia: simplify event callback
pcmcia: remove obsolete ioctl
Conflicts in:
- drivers/staging/comedi/drivers/*
- drivers/staging/wlags49_h2/wl_cs.c
due to dev_info_t and whitespace changes
The MCxx values must be based off memory clock, not CPU core clock.
This also fixes the bug where on some machines the LCD went crazy
while using PCMCIA.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Instead of requiring PCMCIA socket drivers to call various functions
during their (bus) resume and suspend functions, register an own
dev_pm_ops for this class. This fixes several suspend/resume bugs
seen on db1xxx-ss, and probably on some other socket drivers, too.
With regard to the asymmetry with only _noirq suspend, but split up
resume, please see bug 14334 and commit 9905d1b411 .
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Commit d0d26c33b6 broke the driver by
propagating a pointer to the platform_device where a pointer to the
generic device was expected, leading to a spectacular crash...
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Arcom Zeus CF slot requires the same kind of support as the Viper.
To avoid code duplication, introduce a platform device that abstracts
the differences.
This also allows for the removal of the ugly export of viper_cf_rst().
Signed-off-by: Marc Zyngier <maz@misterjones.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
ERROR: "pxa2xx_drv_pcmcia_ops" [drivers/pcmcia/pxa2xx_lubbock_cs.ko] undefined!
ERROR: "pxa2xx_drv_pcmcia_add_one" [drivers/pcmcia/pxa2xx_lubbock_cs.ko] undefined!
We also remove __pxa2xx_drv_pcmcia_probe and its export, since this is
no longer required.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
skt->irq is a mere duplication of pcmcia_socket's pci_irq member.
Get rid of it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
The 'dev' member is now only ever written, so we can safely remove it.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Move the individual socket probing and initialization down into the
SoC specific support files, thereby allowing soc_common_drv_pcmcia_probe
to be eliminated. soc_common.c now no longer deals with distinct groups
of sockets.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Mechanically transplant the removal code from soc_common into each
SoC specific base support file, thereby allowing
soc_common_drv_pcmcia_remove to be removed. No other changes.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
pcmcia_socket_dev_suspend() doesn't use its second argument, so it
may be dropped safely.
This change is necessary for the subsequent yenta suspend/resume fix.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
Move the processor specific initialization (largely resources initialization)
out of soc_common_drv_pcmcia_probe() into dedicated sa11xx_drv_pcmcia_probe()
and __pxa2xx_drv_pcmcia_probe().
By doing this, we are now able to move the PCMCIA related definitions out of
pxa-regs.h and back into pxa2xx_base.c.
As a result, remove that reference of _PCMCIA1IO in arch/arm/mach-pxa/viper.c.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
pxa-regs.h and hardware.h are not intended for use directly in driver
code, remove those unnecessary references.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
The Arcom/Eurotech Viper needs some extra care to run. On this board,
the PC104 connector is actually wired to the second PCMCIA slot.
Therefore, this second socket needs to be enabled, despite not being
managed by the PCMCIA code.
I'd rather have the MECR setup in the platform support code so I could,
for example, use the PC104 bus without having the PCMCIA module loaded.
Signed-off-by: Marc Zyngier <marc.zyngier@altran.com>
cs_internal.h is meant for definitions internal to the PCMCIA core modules.
It must not be included by PCMCIA socket drivers or by PCMCIA device drivers.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The code in include/pcmcia/bulkmem.h was only kept for compatibility reasons.
Therefore, move the remaining region_info_t definition to ds.h
[linux@dominikbrodowski.net: do not modify the IOCTL, move definition to
ds.h, and update changelog]
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Since 43cc71eed1, the platform modalias is
prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable PCMCIA
platform drivers, to re-enable auto loading.
[dbrownell@users.sourceforge.net: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
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>
PXA3 has a different memory controller from PXA2 platforms. Avoid
clashing definitions by moving the PXA2 definitions to pxa2xx-regs.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Recently I've been trying to get working PCMCIA interface on H5000 ipaq
series, using dual PCMCIA sleeve. So far things work correctly, but I had
to do one modification to drivers/pcmcia/pxa2xx_base.c to get the interface
working with orinoco gold PCMCIA card (wired pcnet_cs ethernet card worked
even without this modification).
The issue has something to do with assert time on PCMCIA bus, but I'm not
really sure what -- I found the working value just by trial&error approach.
I'm not sure how is the assert value in pxa2xx_mcxx_asst calculated (I
know, simple formula, but the reason why is it calculated that way is not
obvious for me), neither that my modification is correct. It just works
with iPAQ.
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The PXA2xx PCMCIA driver was registering a device_driver with the
platform_bus_type. Unfortunately, this causes data outside the
device_driver structure to be dereferenced as if it were a
platform_driver structure, causing an oops. Convert the PXA2xx
core driver to use the proper platform_driver structure.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert everyone who uses platform_bus_type to include
linux/platform_device.h.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
In PM v1, all devices were called at SUSPEND_DISABLE level. Then
all devices were called at SUSPEND_SAVE_STATE level, and finally
SUSPEND_POWER_DOWN level. However, with PM v2, to maintain
compatibility for platform devices, I arranged for the PM v2
suspend/resume callbacks to call the old PM v1 suspend/resume
callbacks three times with each level in order so that existing
drivers continued to work.
Since this is obsolete infrastructure which is no longer necessary,
we can remove it. Here's an (untested) patch to do exactly that.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Patch from Richard Purdie
This change makes the soc pcmcia interfaces available earlier in the
boot process meaning devices like CF microdrives can be used for the
root filesystem.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This fixes u32 vs. pm_message_t in pcmcia.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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!
Linus Torvalds