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Added DMA nodes for the elo/elo-plus DMA engines.
Renamed the interrupt controller alias in mpc832x_rdb.dts to ipic so that
its the same as all the other boards.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This patch is based on work done by Madhvesh. R. Sulibhavi back in
March 2007.
We refactor some of the single step handling since it differs between
"classic" and "booke" powerpc cores.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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* Mark __flush_icache_range as a function that can't be probed since its
used by the kprobe code.
* Fix an issue with single stepping and async exceptions. We need to
ensure that we dont get an async exception (external, decrementer, etc)
while we are attempting to single step the probe point.
Added a check to ensure we only handle a single step if its really
intended for the instruction in question.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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It was discussed that global arch_initcall() is preferred way to probe
QE GPIOs, so let's use it.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Ports B and C pins programming is changed to get SCC2 UART and FCC3
ethernet work.
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Now that arch/ppc is gone we always define CONFIG_PPC_CPM_NEW_BINDING so
we can remove all the code associated with !CONFIG_PPC_CPM_NEW_BINDING.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Now that arch/ppc is gone we always define CONFIG_PPC_CPM_NEW_BINDING so
we can remove all the code associated with !CONFIG_PPC_CPM_NEW_BINDING.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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If we have an L2CSR register (e500mc) we need to flush the L2 before going
to nap. We use the HW flush mechanism provided in that register.
The code reuses the CPU_FTR_604_PERF_MON bit as it is no longer used by
any code in the kernel. Additionally we didn't reuse the exist L2CR
feature bit as this is intended for the 7xxx L2CR register and L2CSR
is part of the new Freescale "Book-E" registers.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The e500 core enter DOZE/NAP power-saving modes when the core go to
cpu_idle routine.
The power management default running mode is DOZE, If the user
echo 1 > /proc/sys/kernel/powersave-nap
the system will change to NAP running mode.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The new e500mc core from Freescale is based on the e500v2 but with the
following changes:
* Supports only the Enhanced Debug Architecture (DSRR0/1, etc)
* Floating Point
* No SPE
* Supports lwsync
* Doorbell Exceptions
* Hypervisor
* Cache line size is now 64-bytes (e500v1/v2 have a 32-byte cache line)
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This takes values from the PowerPC ISA BookIII-E specifications that are
for DBCR0. Many of these values are different from those currently
specified, which are for the ppc405. Also added some bookE definitions
for DBCR1 & DBCR2.
[ galak@kernel.crashing.org: Added aliases to 40x DBCR0 to match Book-E,
Added enhanced debug DBCR0/DBSR _CIRPT and _CRET defines and DBSR
IRPT and RET. ]
Signed-off-by: Jerone Young <jyoung5@us.ibm.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This patch fixes following section mismatch:
WARNING: arch/powerpc/sysdev/built-in.o(.text+0x11d8): Section mismatch in
reference from the function qe_reset() to the function
.init.text:cpm_muram_init()
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This is very trivial patch. We're transitioning to the cpm_muram_*
calls. That's it.
Less trivial changes:
- BD_SC_* defines were defined in the cpm.h and qe.h, so to avoid redefines
we remove BD_SC from the qe.h and use cpm.h along with cpm_muram_*
prototypes;
- qe_muram_dump was unused and thus removed;
- added some code to the cpm_common.c to support legacy QE bindings
(data-only node name).
- For convenience, define qe_* calls to cpm_*. So drivers need not to be
changed.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This is patch adds board file, device tree, and defconfig for the new
board, made by Freescale Semiconductor Inc. and Logic Product Development.
Currently supported:
1. UEC{1,2,7,4};
2. I2C;
3. SPI;
4. NS16550 serial;
5. PCI and miniPCI;
6. Intel NOR StrataFlash X16 64Mbit PC28F640P30T85;
7. Graphics controller, Fujitsu MB86277.
Not supported in this patch:
1. StMICRO NAND512W3A2BN6E, 512 Mbit (supported with FSL UPM NAND driver);
2. FHCI USB (supported with FHCI driver).
3. QE Serial UCCs (tested to not work with ucc_uart driver, reason
unknown, yet);
4. ADC AD7843 (tested to work, but support via device tree depends on
major SPI rework, GPIO API, etc);
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This is needed to access QE GPIOs via Linux GPIO API.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-By: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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- split and export __par_io_config_pin() out of par_io_config_pin(), so we
could use the prefixed version with GPIO LIB API;
- rename struct port_regs to qe_pio_regs, and place it into qe.h;
- rename #define NUM_OF_PINS to QE_PIO_PINS, and place it into qe.h.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-By: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This patch adds a function to the qe_lib to setup QE USB clocks routing.
To setup clocks safely, cmxgcr register needs locking, so I just reused
ucc_lock since it was used only to protect cmxgcr.
The idea behind placing clocks routing functions into the qe_lib is that
later we'll hopefully switch to the generic Linux Clock API, thus, for
example, FHCI driver may be used for QE and CPM chips without nasty #ifdefs.
This patch also fixes QE_USB_RESTART_TX command definition in the qe.h.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-By: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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GTM stands for General-purpose Timers Module and able to generate
timer{1,2,3,4} interrupts. These timers are used by the drivers that
need time precise interrupts (like for USB transactions scheduling for
the Freescale USB Host controller as found in some QE and CPM chips),
or these timers could be used as wakeup events from the CPU deep-sleep
mode.
Things unimplemented:
1. Cascaded (32 bit) timers (1-2, 3-4).
This is straightforward to implement when needed, two timers should
be marked as "requested" and configured as appropriate.
2. Super-cascaded (64 bit) timers (1-2-3-4).
This is also straightforward to implement when needed, all timers
should be marked as "requested" and configured as appropriate.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This patch adds local bus nodes for Flash and CAN to the DTS file
of the TQM8560 module (tqm8560.dts).
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Some TQM85xx boards could be equipped with up to 1 GiB (NOR) flash
memory and therefore a modified memory map is required and setup by
the board loader. This patch adds an appropriate DTS file.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This patch adds support for the TQM8548 modules from TQ-Components
GmbH (http://www.tqc.de).
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Like for the TQM5200, the vendor prefix "tqc," is now used for all
TQM85xx modules from TQ-Components GmbH (http://www.tqc.de) in the
corresponding DTS files.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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All the maintained platforms are now in arch/powerpc, so the old
arch/ppc stuff can now go away.
Acked-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Since commit 4cb3cee03d558fd457cb58f56c80a2a09a66110c the code generated
for the in_beXX() and out_beXX() mmio functions has been sub-optimal.
The out_leXX() family of functions are created with the macro
DEF_MMIO_OUT_LE() while the out_beXX() family are created with
DEF_MMIO_OUT_BE(). In what was perhaps a bit too much macro use, both of
these macros are in turn created via the macro DEF_MMIO_OUT().
For the LE versions, eventually they boil down to an asm that will look
something like this:
asm("sync; stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
The issue is that the "stwbrx" instruction only comes in an indexed, or
'x', version, in which the address is represented by the sum of two
registers (the "0,%2"). Unfortunately, gcc doesn't have a constraint for
an indexed memory reference. The "m" constraint allows both indexed and
offset, i.e. register plus constant, memory references and there is no
"stwbr" version for offset references. "m" also allows updating addresses
and there is no 'u' version of "stwbrx" like there is with "stwux".
The unused first operand to the asm is just to tell gcc that *addr is an
output of the asm. The address used is passed in a single register via the
third asm operand, and the index register is just hard coded as 0. This
means gcc is forced to put the address in a single register and can't use
index addressing, e.g. if one has the data in register 9, a base address in
register 3 and an index in register 4, gcc must emit code like "add 11,4,3;
stwbrx 9,0,11" instead of just "stwbrx 9,4,3". This costs an extra add
instruction and another register.
For gcc 4.0 and older, there doesn't appear to be anything that can be
done. But for 4.1 and newer, there is a 'Z' constraint. It does not allow
"updating" addresses, but does allow both indexed and offset addresses.
However, the only allowed constant offset is 0. We can then use the
undocumented 'y' operand modifier, which causes gcc to convert "0(reg)"
into the equivilient "0,reg" format that can be used with stwbrx.
This brings us the to problem with the BE version. In this case, the "stw"
instruction does have both indexed and non-indexed versions. The final asm
ends up looking like this:
asm("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val), "r" (addr));
The undocumented codes "%U0" and "%0X" will generate a 'u' if the memory
reference should be an auto-updating one, and an 'x' if the memory
reference is indexed, respectively. The third operand is unused, it's just
there because asm the code is reused from the LE version. However, gcc
does not know this, and generates unnecessary code to stick addr in a
register! To use the example from the LE version, gcc will generate "add
11,4,3; stwx 9,4,3". It is able to use the indexed address "4,3" for the
"stwx", but still thinks it needs to put 4+3 into register 11, which will
never be used.
This also ends up happening a lot for the offset addressing mode, where
common code like this: out_be32(&device_registers->some_register, data);
uses an instruction like "stw 9, 42(3)", where register 3 has the pointer
device_registers and 42 is the offset of some_register in that structure.
gcc will be forced to generate the unnecessary instruction "addi 11, 3, 42"
to put the address into a single (unused) register.
The in_* versions end up having these exact same problems as well.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Andreas Schwab <schwab@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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When I changed irq_alloc_host() to take an of_node
(52964f87c64e6c6ea671b5bf3030fb1494090a48: "Add an optional
device_node pointer to the irq_host"), I botched the reference
counting semantics.
Stephen pointed out that it's irq_alloc_host()'s business if
it needs to take an additional reference to the device_node,
the caller shouldn't need to care.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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If we do the call to of_address_to_resource() first, then we don't
need to worry about freeing the irq_host (which the code doesn't do
currently anyway).
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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If we do the call to of_address_to_resource() first, then we don't
need to worry about freeing the irq_host (which the code doesn't do
currently anyway).
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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If we do the call to irq_of_parse_and_map() first, then we don't
need to worry about freeing the irq_host.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Make sure CONFIG_TASK_SIZE does not overlap CONFIG_KERNEL_START
This could happen when overriding settings to get 1GB lowmem, and would lead
to userland mysteriousely hanging.
This setting is only used by PPC32.
Signed-off-by: Rune Torgersen <runet@innovsys.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This eliminates this minor boot-time debugging error message:
[ 1.316451] calling add_pcspkr+0x0/0x84
[ 1.316478] initcall add_pcspkr+0x0/0x84 returned -19 after 0 msecs
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 5 of 5: add the Kconfig entry for the C2K board.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 4 of 5: this is the default config for the board. In this
configuration the kernel is going to try to boot from MTD
partition 3 on the NOR flash (see c2k.dts for details about
the partitioning of the flash).
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 3 of 5: driver for the board. At this time it is very generic
and similar to its original, the driver for the prpmc2800.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 2 of 5: support for the board in arch/powerpc/boot.
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Support for the C2K cPCI Single Board Computer from GEFanuc
(PowerPC MPC7448 with a Marvell MV64460 chipset).
All features of the board are not supported yet, but the board
boots, flash works, all Ethernet ports are working and PCI
devices are all found (USB and SATA on PCI1 do not work yet).
Part 1 of 5: DTS file describing the board peripherals. As far as I
know all peripherals except the FPGA are listed in there (I did not
include the FPGA because a lot of work is needed there).
Signed-off-by: Remi Machet <rmachet@slac.stanford.edu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This fixes the following warning, introduced by commit
475ca391b490a683d66bf19999a8a7a24913f139 (mpic: Deal with bogus NIRQ
in Feature Reporting Register):
CC arch/powerpc/sysdev/mpic.o
arch/powerpc/sysdev/mpic.c: In function 'mpic_alloc':
arch/powerpc/sysdev/mpic.c:1146: warning: suggest explicit braces to avoid ambiguous 'else'
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Conflicts:
arch/powerpc/sysdev/fsl_soc.c
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Now that walk_memory_resource() is available regardless of
MEMORY_HOTPLUG's setting, this dependency is not needed.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The ehea driver was recently changed[1] to use walk_memory_resource() to
detect the system's memory layout. However, walk_memory_resource() is
available only when memory hotplug is enabled. So CONFIG_EHEA was
made to depend on MEMORY_HOTPLUG [2], but it is inappropriate for a
network driver to have such a dependency.
Make the declaration of walk_memory_resource() and its powerpc
implementation (ehea is powerpc-specific) unconditionally available.
[1] 48cfb14f8b89d4d5b3df6c16f08b258686fb12ad
"ehea: Add DLPAR memory remove support"
[2] fb7b6ca2b6b7c23b52be143bdd5f55a23b9780c8
"ehea: Add dependency to Kconfig"
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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During the next merge window, pci_name()'s return value will become
const, so use the new dev_set_name() instead to avoid the warning (from
linux-next):
arch/powerpc/kernel/pci_64.c: In function 'of_create_pci_dev':
arch/powerpc/kernel/pci_64.c:193: warning: passing argument 1 of 'sprintf' discards qualifiers from pointer target type
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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When building a signal or a ucontext, we can incorrectly set the MSR_VEC
bit of the kernel pt_regs->msr before returning to userspace if the task
-ever- used VMX.
This can lead to funny result if that stack used it in the past, then
"lost" it (ie. it wasn't enabled after a context switch for example)
and then called get_context. It can end up with VMX enabled and the
registers containing values from some other task.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This corrects the names of two CONFIG_ variables.
Note that the CONFIG_MPC86XADS fix uncovers another bug
(with mpc866_ads_defconfig) that will require fixing:
<-- snip -->
...
arch/powerpc/boot/dtc -O dtb -o arch/powerpc/boot/mpc866ads.dtb -b 0 /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/powerpc/boot/dts/mpc866ads.dts
DTC: dts->dtb on file "/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/powerpc/boot/dts/mpc866ads.dts"
WRAP arch/powerpc/boot/cuImage.mpc866ads
powerpc64-linux-ld: arch/powerpc/boot/cuboot-mpc866ads.o: No such file: No such file or directory
make[2]: *** [arch/powerpc/boot/cuImage.mpc866ads] Error 1
<-- snip -->
Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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use_mm() was changed to use switch_mm() instead of activate_mm(), since
then nobody calls (and nobody should call) activate_mm() with
PF_BORROWED_MM bit set.
As Jeff Dike pointed out, we can also remove the "old != new" check, it is
always true.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Jeff Dike <jdike@addtoit.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/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/ipath: Fix SM trap forwarding
IB/ehca: Reject send WRs only for RESET, INIT and RTR state
MAINTAINERS: Update NetEffect (iw_nes) entry
IB/ipath: Fix device capability flags
IB/ipath: Avoid test_bit() on u64 SDMA status value
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
x86/PCI: add workaround for bug in ASUS A7V600 BIOS (rev 1005)
PCI/x86: fix up PCI stuff so that PCI_GOANY supports OLPC
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: emu10k1 - fix system hang with Audigy2 ZS Notebook PCMCIA card
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