| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch uses the newly added functions for testing if an address is
an ISA or PCI IO port to properly unmap things in pci_iounmap that
aren't such ports. Without that, drivers using the iomap API will never
actually unmap resources, which on IBM server machines will prevent
hot-unplug of the corresponding HW adapters.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This adds a function that tells you if a given kernel virtual address
is hitting a PCI or ISA IO port permanent mapping or not. This is to
be used in the next patch to fix iomap APIs to properly unmap things.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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As of 2.6.22 the kernel doesn't recognize the i8042 keyboard/mouse
controller on the PegasosPPC. This is because of a feature/bug in the
OF device tree: the "device_type" attribute is an empty string instead
of "8042" as the kernel expects. This adds a secondary detection
which looks for a device whose *name* is "8042" if there is no device
whose *type* is "8042".
Signed-off-by: Alan Curry <pacman@world.std.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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WARNING: vmlinux.o(.text+0x4f568): Section mismatch: reference to .init.text:.__alloc_bootmem (between '.setup_hvlpevent_queue' and '.process_hvlpevents')
setup_hvlpevent_queue is only called from __init code so make it __init
as well.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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WARNING: vmlinux.o(.text+0x8124): Section mismatch: reference to .init.text:.iSeries_early_setup (between '.__start_initialization_iSeries' and '.__mmu_off')
WARNING: vmlinux.o(.text+0x8128): Section mismatch: reference to .init.text:.early_setup (between '.__start_initialization_iSeries' and '.__mmu_off')
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This fixes the RTC on linkstation ppc machines again, and updates the
device tree: add rtc nodes on i2c, remove bogus 0-size cache-line
declarations, rename interrupt-controller nodes, remove erroneous
interrupt-parent line, accidentally introduced by a recent patch.
Signed-off-by: G. Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Scan the device tree for i2c devices, check their "compatible" property
against a hard-coded table, and, if found, register with i2c boardinfo.
This provides the infrastructure needed to find i2c devices in the
device tree and register them with the i2c subsystem.
This and the following commit let the linkstation work with the new i2c
API and thus fix a regression.
Signed-off-by: G. Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This fixes a possible infinite loop when the unsigned long counter "i"
is used in lmb_add_region() in the following for loop:
for (i = rgn->cnt-1; i >= 0; i--)
by making the loop counter "i" be signed.
Signed-off-by: Manish Ahuja <ahuja@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This reverts commit fd6e9d3945ee122eb513ada8b17296d243c1ce5e.
Having #size-cells == 0 in a node indicates that things under the
node aren't directly accessible, and therefore we shouldn't try to
translate addresses for devices under the node into CPU physical
addresses.
Some drivers, such as the nvram driver for powermacs, rely on
of_address_to_resource failing if they are called for a node
representing a device whose resources aren't directly accessible
by the CPU. These drivers were broken by commit fd6e9d39,
resulting in the "Lombard" powerbook hanging early in the boot
process.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc
* 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc: (25 commits)
[POWERPC] 85xx: Added needed MPC85xx PCI device IDs
[POWERPC] Add Freescale PCI VENDOR ID and 8641 device IDs
[POWERPC] 85xxCDS: MPC8548 DTS cleanup.
[POWERPC] 85xxCDS: Misc 8548 PCI Corrections.
[POWERPC] 85xxCDS: Delay 8259 cascade hookup.
[POWERPC] 85xxCDS: Make sure restart resets the PCI bus.
[POWERPC] 85xxCDS: Allow 8259 cascade to share an MPIC interrupt line.
[POWERPC] FSL: Add support for PCI-X controllers
[POWERPC] Make sure virtual P2P bridge registers are setup on PCIe PHB
[POWERPC] Provide ability to setup P2P bridge registers from struct resource
[POWERPC] Add basic PCI/PCI Express support for 8544DS board
[POWERPC] Make endianess of cfg_addr for indirect pci ops runtime
[POWERPC] Removed setup_indirect_pci_nomap
[POWERPC] 85xx: Add quirk to ignore bogus FPGA on CDS
[POWERPC] 85xx: Added 8568 PCIe support
[POWERPC] Fixup resources on pci_bus for PCIe PHB when no device is connected
[POWERPC] Add basic PCI node for mpc8568mds board
[POWERPC] Use Freescale pci/pcie common code for 85xx boards
[POWERPC] Update PCI nodes in the 83xx/85xx boards device tree
[POWERPC] Add 8548 CDS PCI express controller node and PCI-X device node
...
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Added the MPC85xx PCI device IDs that we need for the quirks we have.
Also, fixed the MPC8567E, MPC8567 device IDs which had the wrong value.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Also add 8641/8641D device IDs as well.
All of which already exist or have been submitted to
The Linux PCI ID Repository at:
http://pci-ids.ucw.cz/
CC-to: pci-ids@ucw.cz
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Added the P2P bridge present on the Arcadia base board and moved the VIA
Southbridge behind the bridge to reflect its actual position in the bus
organization. Added the RTC that's in the VIA Southbridge and expanded
the ranges array for the SOC node to allow proper address translation of
the RTC registers.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Setting the host bridge @8000 as primary. Also fixing a bug in
setting the USB interrupt numbers.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The interrupts of an E100 card inserted in PCI slot 4 may be on at bootup.
The resulting interrupt flood interacts with the 8259 cascade handler and
prevents proper boot up. There is a quirk for the E100 that will disable
the E100's interrupts but to use it, the 8259 cascade hookup must be
delayed until after the quirk has run. This patch delays the 8259 cascade
hookup by registering a device_initcall() which runs after the PCI quirk
for the E100.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The current 85xxCDS restart code fails to reset the PCI bus which can
lead to odd behavior after the restart. This patch uses the VIA Super
Southbridge to perform a PCI reset which will reset the entire system.
NOTE: Since the VIA chip is behind a PCI-to-PCI bridge which can be
disabled with a switch setting, it may not be possible to perform the
PCI bus reset. In this case, the code defaults to the previous restart
mechanism.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The Freescale MPC8555CDS and MPC8548CDS reference hardware has a legacy
8259 interrupt controller pair contained within a VIA VT82C686B Southbridge
on the main carrier board. The processor complex plugs into the carrier
card using a PCI slot which limits the available interrupts to the
INTA-INTD PCI interrupts. The output of the 8259 cascade pair is routed
through a gate array and connected to the PCI INTA interrupt line.
The normal interrupt chaining hook (set_irq_chained_handler) does
not allow sharing of the chained interrupt which prevents the
use of PCI INTA by PCI devices. This patch allows the 8259 cascade
pair to share their interrupt line with PCI devices.
NOTE: The addition of the .end routine for the MPIC is not strictly
necessary for this patch. It's there so this code will run from within
the threaded interrupt context used by the Real Time patch.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Some set of 85xx platforms have PCI-X controllers. The old arch/ppc
code setup these controllers and we haven't moved it over to arch/powerpc.
We use the PCI-X Capabilties to know if we are in PCI-X mode instead
of the Global Utilities PORDEVSR.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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For the Freescale PCIe PHBs Not all firmwares setup the virtual P2P
bridge registers properly. Make sure they get setup based on what
the struct pci_controller got from the device tree.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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We need the ability to set P2P bridge registers to properly setup the virtual
P2P bridges that exist in PCIe controllers for some of the embedded setups.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Add basic support for the PCIe PHB and enable the ULI bridge.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Make it so we do a runtime check to know if we need to write cfg_addr
as big or little endian. This is needed if we want to allow 86xx support
to co-exist in the same kernel as other 6xx PPCs.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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We don't use setup_indirect_pci_nomap in arch/powerpc and it appears
the users that needed it from arch/ppc are now using setup_indirect_pci.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The newer Arcadia boards for CDS have an FPGA that shows up on PCI
however isn't a real PCI device. Add a quirk to just ignore the
FPGA.
This is based on the following patch from Andy & York:
http://ozlabs.org/pipermail/linuxppc-dev/2007-February/032042.html
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Added the PCIe device node to the 8568 dts and the needed quirk entries.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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On the 85xx/86xx PCIe controllers if there is no device connected to the
PHB we will still allocate a pci_bus for downstream bus of the virtual
P2P bridge. However the resources allocated to the downstream bus are not
correct and so we just mimic the resources from the upstream pci_bus.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Ebony Zhu <ebony.zhu@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Switch the 85xx platform over to using the FSL generic PCI code. This
gets ups PCIe support in addition to base PCI support.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Updated the 83xx & 85xx device tree PCI related compartible property.
Used the following compatible properties:
PCI "fsl,mpc8349-pci"
PCI "fsl,mpc8540-pci"
PCI-X: "fsl,mpc8540-pcix"
PCIe: "fsl,mpc8548-pcie"
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Add 8548 CDS PCI express controller node and PCI-X device node. The current
dts file is suitable for 8548 Rev 2.0 board with Arcadia 3.1.
This kind of board combination is the most popular.
Used the following compatible properties:
PCI "fsl,mpc8540-pci"
PCI-X: "fsl,mpc8540-pcix"
PCIe: "fsl,mpc8548-pcie"
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Use the PCI capabilities to determine if we are PCIe PHB. Also use
PPC_INDIRECT_TYPE_NO_PCIE_LINK since the Freescale PCIe controllers
will lock the system if they don't have link and you try to do a config
access to anything but the PHB.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Added PPC_INDIRECT_TYPE_NO_PCIE_LINK flag to the indirect pci handling
code to ensure that we don't talk to any device other than the PHB
if we don't have PCIe link. Some controllers will lockup if they try
to do a config cycle to any device on the bus except the PHB.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Added early_find_capability that wraps pci_bus_find_capability and uses
fake_pci_bus() to allow us to call it before we've fully setup the
pci_controller.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Rewrite the Freescale PCI code to support PCI on 83xx/85xx/86xx and
PCIe on 85xx/86xx.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Move
arch/powerpc/platforms/86xx/pci.c -> arch/powerpc/sysdev/fsl_pci.c
arch/powerpc/sysdev/fsl_pcie.h -> arch/powerpc/sysdev/fsl_pci.h
as the base to unify 83xx/85xx/86xx pci and pcie.
Add CONFIG_FSL_PCI to build fsl_pci.c for Freescale pci and pcie option.
The code still works for 86xx platforms.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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spufs.h now has two enums for the sched_flags leading to identical
values for SPU_SCHED_WAS_ACTIVE and SPU_SCHED_NOTIFY_ACTIVE. Merge
them into a single enum as they were in the IBM development tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Clean up duplicate includes in drivers/macintosh/
[POWERPC] Quiet section mismatch warning on pcibios_setup
[POWERPC] init and exit markings for hvc_iseries
[POWERPC] Quiet section mismatch in hvc_rtas.c
[POWERPC] Constify of_platform_driver match_table
[POWERPC] hvcs: Make some things static and const
[POWERPC] Constify of_platform_driver name
[POWERPC] MPIC protected sources
[POWERPC] of_detach_node()'s device node argument cannot be const
[POWERPC] Fix ARCH=ppc builds
[POWERPC] mv64x60: Use mutex instead of semaphore
[POWERPC] Allow smp_call_function_single() to current cpu
[POWERPC] Allow exec faults on readable areas on classic 32-bit PowerPC
[POWERPC] Fix future firmware feature fixups function failure
[POWERPC] fix showing xmon help
[POWERPC] Make xmon_write accept a const buffer
[POWERPC] Fix misspelled "CONFIG_CHECK_CACHE_COHERENCY" Kconfig option.
[POWERPC] cell: CONFIG_SPE_BASE is a typo
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WARNING: vmlinux.o(.text+0x1cefcc): Section mismatch: reference to .init.text:.pcibios_setup (between '.pci_setup' and '.pci_init')
pci_setup() is marked __devinit and calls pcibios_setup.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Some HW platforms, such as the new cell blades, requires some MPIC sources
to be left alone by the operating system. This implements support for
a "protected-sources" property in the mpic controller node containing a list
of source numbers to be protected against operating system interference.
For those interested in the gory details, the MPIC on the southbridge of
those blades has some of the processor outputs routed to the cell, and
at least one routed as a GPIO to the service processor. It will be used
in the GA product for routing some of the southbridge error interrupts
to the service processor which implements some of the RAS stuff, such
as checkstopping when fatal errors occurs before they can propagate.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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...since it modifies it (when it sets the OF_DETACHED flag).
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This removes the requirement for callers to get_cpu() to check in simple
cases. i386 and x86_64 already received a similar treatment.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Classic 32-bit PowerPC CPUs, and the early 64-bit PowerPC CPUs, don't
provide a way to prevent execution from readable pages, that is, the
MMU doesn't distinguish between data reads and instruction reads,
although a different exception is taken for faults in data accesses
and instruction accesses.
Commit 9ba4ace39fdfe22268daca9f28c5df384ae462cf, in the course of
fixing another bug, added a check that meant that a page fault due
to an instruction access would fail if the vma did not have the
VM_EXEC flag set. This gives an inconsistent enforcement on these
CPUs of the no-execute status of the vma (since reading from the page
is sufficient to allow subsequent execution from it), and causes old
versions of ppc32 glibc (2.2 and earlier) to fail, since they rely
on executing the word before the GOT but don't have it marked
executable.
This fixes the problem by allowing execution from readable (or writable)
areas on CPUs which do not provide separate control over data and
instruction reads.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Jon Loeliger <jdl@freescale.com>
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Move firmware feature initialisation from pSeries_init_early to the
earlier pSeries_probe_hypertas so they are initialised before firmware
feature fixups are applied.
Currently firmware feature sections are only used for iSeries which
initialises the these features much earlier. This is a bug in waiting
on pSeries.
Also adds some whitespace fixups.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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In some configuration, xmon help string is larger than xmon_printf
buffer. We need not to use printf. This patch adds xmon_puts and
change to use it to show help string.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Because xmon_write doesn't change the buffer, we should add 'const'
qualifier to the argument which points it.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The config symbol for SPE support is called CONFIG_SPU_BASE, not
CONFIG_SPE_BASE.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fix a mismerge in commit 8b6f50ef1d5cc86b278eb42bc91630fad455fb10:
"spufs: make signal-notification files readonly for NOSCHED contexts",
where structs got duplicated.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Reading from the signal{1,2} files requires a spu_acquire_saved, so make these
files write-only for contexts created with SPU_CREATE_NOSCHED.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The PS3 bootwrapper files use instructions only available on 64-bit CPUs.
Add the code generation directive '.machine "ppc64"' for toolchains
configured for 32-bit CPUs.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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