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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (60 commits)
dma-debug: make memory range checks more consistent
dma-debug: warn of unmapping an invalid dma address
dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUG
dma-debug/x86: register pci bus for dma-debug leak detection
dma-debug: add a check dma memory leaks
dma-debug: add checks for kernel text and rodata
dma-debug: print stacktrace of mapping path on unmap error
dma-debug: Documentation update
dma-debug: x86 architecture bindings
dma-debug: add function to dump dma mappings
dma-debug: add checks for sync_single_sg_*
dma-debug: add checks for sync_single_range_*
dma-debug: add checks for sync_single_*
dma-debug: add checking for [alloc|free]_coherent
dma-debug: add add checking for map/unmap_sg
dma-debug: add checking for map/unmap_page/single
dma-debug: add core checking functions
dma-debug: add debugfs interface
dma-debug: add kernel command line parameters
dma-debug: add initialization code
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Fix trivial conflicts due to whitespace changes in arch/x86/kernel/pci-nommu.c
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Conflicts:
arch/x86/Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into core/iommu
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Fix this sparse warning:
drivers/base/iommu.c:34:18: warning: non-ANSI function declaration of function 'iommu_found'
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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The dma ops unification enables X86 and IA64 to share intel_dma_ops so
we can make dma mapping functions static. This also remove unused
intel_map_single().
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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dma_mapping_error is used to see if dma_map_single and dma_map_page
succeed. IA64 VT-d dma_mapping_error always says that dma_map_single
is successful even though it could fail. Note that X86 VT-d works
properly in this regard.
This patch fixes IA64 VT-d dma_mapping_error by adding VT-d's own
dma_mapping_error() that works for both X86_64 and IA64. VT-d uses
zero as an error dma address so VT-d's dma_mapping_error returns 1 if
a passed dma address is zero (as x86's VT-d dma_mapping_error does
now).
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conflicts:
arch/ia64/include/asm/dma-mapping.h
arch/ia64/include/asm/machvec.h
arch/ia64/include/asm/machvec_sn2.h
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This converts X86 and IA64 to use include/linux/dma-mapping.h.
It's a bit large but pretty boring. The major change for X86 is
converting 'int dir' to 'enum dma_data_direction dir' in DMA mapping
operations. The major changes for IA64 is using map_page and
unmap_page instead of map_single and unmap_single.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This patch converts dma_map_single and dma_unmap_single to use
map_page and unmap_page respectively and removes unnecessary
map_single and unmap_single in struct dma_mapping_ops.
This leaves intel-iommu's dma_map_single and dma_unmap_single since
IA64 uses them. They will be removed after the unification.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This is a preparation of struct dma_mapping_ops unification. We use
map_page and unmap_page instead of map_single and unmap_single.
This uses a temporary workaround, ifdef X86_64 to avoid IA64
build. The workaround will be removed after the unification. Well,
changing x86's struct dma_mapping_ops could break IA64. It's just
wrong. It's one of problems that this patchset fixes.
We will remove map_single and unmap_single hooks in the last patch in
this patchset.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-stage-3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (190 commits)
Revert "cpuacct: reduce one NULL check in fast-path"
Revert "x86: don't compile vsmp_64 for 32bit"
x86: Correct behaviour of irq affinity
x86: early_ioremap_init(), use __fix_to_virt(), because we are sure it's safe
x86: use default_cpu_mask_to_apicid for 64bit
x86: fix set_extra_move_desc calling
x86, PAT, PCI: Change vma prot in pci_mmap to reflect inherited prot
x86/dmi: fix dmi_alloc() section mismatches
x86: e820 fix various signedness issues in setup.c and e820.c
x86: apic/io_apic.c define msi_ir_chip and ir_ioapic_chip all the time
x86: irq.c keep CONFIG_X86_LOCAL_APIC interrupts together
x86: irq.c use same path for show_interrupts
x86: cpu/cpu.h cleanup
x86: Fix a couple of sparse warnings in arch/x86/kernel/apic/io_apic.c
Revert "x86: create a non-zero sized bm_pte only when needed"
x86: pci-nommu.c cleanup
x86: io_delay.c cleanup
x86: rtc.c cleanup
x86: i8253 cleanup
x86: kdebugfs.c cleanup
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and 'x86/signal'; commit 'v2.6.29' into x86/core
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'x86/mtrr', 'x86/setup', 'x86/setup-memory', 'x86/urgent', 'x86/uv', 'x86/x2apic' and 'linus' into x86/core
Conflicts:
arch/parisc/kernel/irq.c
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Impact: invalid use of GFP_KERNEL in interrupt context
Queued invalidation and interrupt-remapping will get initialized with
interrupts disabled (while enabling interrupt-remapping). So use
GFP_ATOMIC instead of GFP_KERNEL for memory alloacations.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: fix interrupt table entry leak
Fix the typo which was not clearing all the interrupt remapping table
entries corresponding to an irq.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: cleanup/sanitization
Start from a sane state while enabling dma and interrupt-remapping, by
clearing the previous recorded faults and disabling previously
enabled queued invalidation and interrupt-remapping.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: new interfaces (not yet used)
Routines for disabling queued invalidation and interrupt remapping.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: interface augmentation (not yet used)
Enable fault handling flow for intr-remapping aswell. Fault handling
code now shared by both dma-remapping and intr-remapping.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: code movement
Move page fault handling code to dmar.c
This will be shared both by DMA-remapping and Intr-remapping code.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: fix potential deadlock on x2apic
fix "hard-safe -> hard-unsafe lock order detected" with irq_2_ir_lock
On x2apic enabled system:
[ INFO: hard-safe -> hard-unsafe lock order detected ]
2.6.27-03151-g4480f15b #1
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swapper/1 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
(irq_2_ir_lock){--..}, at: [<ffffffff8038ebc0>] get_irte+0x2f/0x95
and this task is already holding:
(&irq_desc_lock_class){+...}, at: [<ffffffff802649ed>] setup_irq+0x67/0x281
which would create a new lock dependency:
(&irq_desc_lock_class){+...} -> (irq_2_ir_lock){--..}
but this new dependency connects a hard-irq-safe lock:
(&irq_desc_lock_class){+...}
... which became hard-irq-safe at:
[<ffffffffffffffff>] 0xffffffffffffffff
to a hard-irq-unsafe lock:
(irq_2_ir_lock){--..}
... which became hard-irq-unsafe at:
... [<ffffffff802547b5>] __lock_acquire+0x571/0x706
[<ffffffff8025499f>] lock_acquire+0x55/0x71
[<ffffffff8062f2c4>] _spin_lock+0x2c/0x38
[<ffffffff8038ee50>] alloc_irte+0x8a/0x14b
[<ffffffff8021f733>] setup_IO_APIC_irq+0x119/0x30e
[<ffffffff8090860e>] setup_IO_APIC+0x146/0x6e5
[<ffffffff809058fc>] native_smp_prepare_cpus+0x24e/0x2e9
[<ffffffff808f982c>] kernel_init+0x5a/0x176
[<ffffffff8020c289>] child_rip+0xa/0x11
[<ffffffffffffffff>] 0xffffffffffffffff
Fix this theoretical lock order issue by using spin_lock_irqsave() instead of
spin_lock()
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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and 'linus' into x86/core
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'x86/urgent', 'linus' and 'core/percpu' into x86/core
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Conflicts:
arch/x86/include/asm/fixmap_64.h
Semantic merge:
arch/x86/include/asm/fixmap.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* 'bkl-removal' of git://git.lwn.net/linux-2.6:
Fix a lockdep warning in fasync_helper()
Add a missing unlock_kernel() in raw_open()
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Cc: stable@kernel.org
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (21 commits)
MIPS: Alchemy: PB1200: use SMC91X platform data.
MIPS: Alchemy: MIPS hazard workarounds are not required.
MIPS: Alchemy: provide cpu feature overrides.
MIPS: Alchemy: unify CPU model constants.
MIPS: Make a needlessly global symbol static in arch/mips/kernel/smp.c
MIPS: Fix global namespace pollution in arch/mips/kernel/smp-up.c
MIPS: Malta: make a needlessly global integer variable static
MIPS: Use BUG_ON() where possible.
MIPS: Convert obsolete irq_desc_t to struct irq_desc
MIPS: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all platforms
MIPS: EMMA2RH: Set UART mapbase
MIPS: EMMA2RH: Use set_irq_chip_and_handler_name
MIPS: EMMA2RH: Use handle_edge_irq() handler for GPIO interrupts
MIPS: Mark Eins: Fix cascading interrupt dispatcher
MIPS: Au1000: convert to using gpiolib
MIPS: Stop using <asm-generic/int-l64.h>.
MIPS: Cavium: Add -Werror
MIPS: Makefile: Add simple make install target.
MIPS: Compat: Zero upper 32-bit of offset_high and offset_low.
MIPS: __raw_spin_lock() may spin forever on ticket wrap.
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Add platform data for the smc91x on the PB1200/DB1200, and remove the
now unused AU1X00 entry in smc91x.h.
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
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This fixes a few warnings - and triggers a few new ones which the rest of
this patch fixes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (180 commits)
powerpc: clean up ssi.txt, add definition for fsl,ssi-asynchronous
powerpc/85xx: Add support for the "socrates" board (MPC8544).
powerpc: Fix bugs introduced by sysfs changes
powerpc: Sanitize stack pointer in signal handling code
powerpc: Add write barrier before enabling DTL flags
powerpc/83xx: Update ranges in gianfar node to match other dts
powerpc/86xx: Move gianfar mdio nodes under the ethernet nodes
powerpc/85xx: Move gianfar mdio nodes under the ethernet nodes
powerpc/83xx: Move gianfar mdio nodes under the ethernet nodes
powerpc/83xx: Add power management support for MPC837x boards
powerpc/mm: Introduce early_init_mmu() on 64-bit
powerpc/mm: Add option for non-atomic PTE updates to ppc64
powerpc/mm: Fix printk type warning in mmu_context_nohash
powerpc/mm: Rename arch/powerpc/kernel/mmap.c to mmap_64.c
powerpc/mm: Merge various PTE bits and accessors definitions
powerpc/mm: Tweak PTE bit combination definitions
powerpc/cell: Fix iommu exception reporting
powerpc/mm: e300c2/c3/c4 TLB errata workaround
powerpc/mm: Used free register to save a few cycles in SW TLB miss handling
powerpc/mm: Remove unused register usage in SW TLB miss handling
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Manual merge of:
arch/powerpc/include/asm/elf.h
drivers/i2c/busses/i2c-mpc.c
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The driver was not releasing memory when it was removed or
when there was a failure during probe. This fixes it.
Signed-off-by: John Linn <john.linn@xilinx.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Support for the PPC9A VME Single Board Computer from GE Fanuc (PowerPC
MPC8641D).
This is the basic board support for GE Fanuc's PPC9A, a 6U single board
computer, based on Freescale's MPC8641D.
Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The RPA PCI hotplug driver calls EEH routines, so should depend on
EEH. Also PPC_PSERIES implies PPC64, so remove that.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Change the ps3av_auto_videomode() mode id argument type from unsigned to
signed so a negative id can be detected and reported as an -EINVAL failure.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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After UART interrupt handler is installed and rx is enabled, if an rx
interrupt comes before hardware init, rx->cur will be updated. Then the
hardware init will reset BD and make rx->cur out of sync, move the hardware
init code before request_irq.
Signed-off-by: Xiaotian Feng <xiaotian.feng@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The i2c_wait() function is using wait_event_interruptible_timeout() to wait for
the I2C controller to signal that it has completed an I2C bus operation. If
the process that causes the I2C operation terminated abruptly, the wait will
be interrupted, returning an error. It is better to let the I2C operation
finished before the process exits.
It is safe to use wait_event_timeout() instead, because the timeout will allow
the process to exit if the I2C bus hangs. It's also better to allow the
I2C operation to finish, because unacknowledged I2C operations can cause the
I2C bus to hang.
Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Manual merge of:
arch/powerpc/include/asm/pgtable-ppc32.h
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As suggested, this is used for signed rather than unsigned
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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