| Commit message (Collapse) | Author | Age | Files | Lines |
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For 32-bit processes, the getcontext side of the swapcontext system
call (i.e. the saving of the context when the first argument is
non-NULL) has to set the ctx->uc_mcontext.uc_regs pointer to the place
where it saves the registers. Which it does, but it doesn't ensure
that the pointer is 16-byte aligned. 16-byte alignment is needed
because the Altivec/VMX registers are saved in there, and they need to
be on a 16-byte boundary.
This fixes it by ensuring the appropriate alignment of the pointer.
This issue was pointed out by Jakub Jelinek.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Initialize the pci device pci channel state. This is critical
for having the pci_channel_offline() routine (in pci.h) to
function correctly.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This updates the Documentation/powerpc part of the MTD OF
implementation with the new field probe-type. Its support has already
been implemented in MTD part (drivers/mtd/maps/physmap_of.c).
Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The Efika matches chrp_probe() too, so put its own probe first to make
sure we get it right in a multiplatform build.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The patch adding support for zImage.ps3 didn't add a zImage.initrd.ps3
target causing builds of zImage.initrd to fail when ps3 is included in
the .config. The current method of generating ps3 images doesn't support
initrd's yet, so we create a dummy target that only displays a warning
message instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This is a long standing typo.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Only initialise viocons on legacy iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Only initialise viocd on legacy iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Only initialise iseries_veth on legacy iSeries.
Make the init and exit routines static.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Only initialise viotape on legacy iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Don't initialise viodasd except on legacy iSeries.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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On some oldworld PowerMacs, OF doesn't assign interrupts properly
beyond P2P bridges. Fortunately, the fix is easy as all those machines
just wire all IRQ lines together to one IRQ which is assigned to the
bridge itself. We already have a special function for parsing Apple
OldWorld interrupts which are special, so let's add to it the ability
to walk up the PCI tree to find interrupts.
This fixes irqs on the lower slots of s900 clones among others.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6
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This patch add scanning of ebc bus to of_platform, which is needed
to recognize devices located on that bus.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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The difference between 'nid' and 'node' fields in an
spu structure was used incorrectly. The common 'node'
number now reflects the NUMA node, and it is used
in other places in the code as well.
The 'nid' value is meaningful only in one place, namely
the computation of the interrupt numbers based on the
physical location of an spu. Consequently, we look it
up directly in the place where it is used now.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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Some SPU code was a bit too convoluted and broke when adding support for
the new style device-tree, most notably the struct pages for SPEs no
longer get created. oops...
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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Don't limit spider I/O workarounds to the first two buses.
The IBM Cell blade has three of them (one PCI, two PCIe)
and we want to handle them all.
Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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Needed to be able to include spu.h independant from other
headers.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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New options appeared in the kernel, and new hardware became
available for us to use.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
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fix a typo, sys_mincore() needs min().
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Linus "I'm a moron" Torvalds <torvalds@osdl.org>
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amikbd: missing declaration
sun3_NCR5380: more work_struct mess
sun3_NCR5380: cast is not an lvalue
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Hugh Dickins correctly points out that mincore() is actually _supposed_
to fail on an unmapped hole in the user address space, rather than
return valid ("empty") information about the hole. This just simplifies
the problem further (I had been misled by our previous confusing and
complicated way of doing mincore()).
Also, in the unlikely situation that we can't allocate a temporary
kernel buffer, we should actually return EAGAIN, not ENOMEM, to keep the
"unmapped hole" and "allocation failure" error cases separate.
Finally, add a comment about our stupid historical lack of support for
anonymous mappings. I'll fix that if somebody reminds me after 2.6.20
is out.
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
IB/mthca: Use DEFINE_MUTEX() instead of mutex_init()
IB/mthca: Add HCA profile module parameters
IB/srp: Fix FMR mapping for 32-bit kernels and addresses above 4G
IB: Fix ib_dma_alloc_coherent() wrapper
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mthca_device_mutex() can be initialized automatically with
DEFINE_MUTEX() rather than explicitly calling mutex_init(). This
saves a bit of text and shrinks the source by a line, so we may as
well do it....
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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Add module parameters that enable settting some of the HCA
profile values, such as the number of QPs, CQs, etc.
Signed-off-by: Leonid Arsh <leonida@voltaire.com>
Signed-off-by: Moni Shoua <monis@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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struct srp_device.fmr_page_mask was unsigned long, which means that
the top part of addresses above 4G was being chopped off on 32-bit
architectures. Of course nothing good happens when data from SRP
targets is DMAed to the wrong place.
Fix this by changing fmr_page_mask to u64, to match the addresses
actually used by IB devices.
Thanks to Brian Cain <Brian.Cain@ge.com> and David McMillen
<davem@systemfabricworks.com> for help diagnosing the bug and testing
the fix.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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The ib_dma_alloc_coherent() wrapper uses a u64* for the dma_handle
parameter, unlike dma_alloc_coherent, which uses dma_addr_t*. This
means that we need a temporary variable to handle the case when
ib_dma_alloc_coherent() just falls through directly to
dma_alloc_coherent() on architectures where sizeof u64 != sizeof
dma_addr_t.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[PATCH] pata_via: Cable detect error
[PATCH] Fix help text for CONFIG_ATA_PIIX
[PATCH] initializer entry defined twice in pata_rz1000
[PATCH] ata: fix platform_device_register_simple() error check
[PATCH] ahci: do not mangle saved HOST_CAP while resetting controller
[PATCH] libata: don't initialize sg in ata_exec_internal() if DMA_NONE (take #2)
[libata] sata_svw: Disable ATAPI DMA on current boards (errata workaround)
[libata] use kmap_atomic(KM_IRQ0) in SCSI simulator
[PATCH] ata_piix: use piix_host_stop() in ich_pata_ops
[PATCH] ata_piix: IDE mode SATA patch for Intel ICH9
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The UDMA66 VIA hardware has no controller side cable detect bits we can
use. This patch minimally fixes the problem by reporting unknown in this
case and using drive side detection.
The old drivers/ide code does some additional tricks but those aren't
appropriate now we are in -rc.
Without this update UDMA66 via controllers run slowly. They don't fail so
it's a borderline call whether this is -rc material or not.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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> Thanks for clarifying Bill, and sorry Alan. ata_piix does indeed work
> correctly. The help text is a bit confusing:
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> config ATA_PIIX
> tristate "Intel PIIX/ICH SATA support"
> depends on PCI
> help
> This option enables support for ICH5/6/7/8 Serial ATA.
> If PATA support was enabled previously, this enables
> support for select Intel PIIX/ICH PATA host controllers.
New help text
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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This removes the extra definition of the .error_handler member
in the pata_rz1000 driver.
Signed-off-by: Ira W. Snyder <kernel@irasnyder.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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The return value of platform_device_register_simple() should be checked
by IS_ERR().
Cc: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Do not mangle with HOST_CAP while resetting controller. The code is
there for a historical reason. The mangling breaks controller feature
detection and 0 PORTS_IMPL workaround code.
This problem was spotted by Manoj Kasichainula.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Manoj Kasichainula <manoj@io.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Calling sg_init_one() with NULL buf causes oops on certain
configurations. Don't initialize sg in ata_exec_internal() if
DMA_NONE and make the function complain if @buf is NULL when dma_dir
isn't DMA_NONE. While at it, fix comment.
The problem is discovered and initial patch was submitted by Arnd
Bergmann.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Current Broadcom/Serverworks SATA boards (including Apple K2 SATA)
have problems with ATAPI DMA, so it is disabled. ATAPI PIO, ATA PIO,
and ATA DMA continue to work just fine.
Acked-by: Anantha Subramanyam <ananth@broadcom.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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We are inside spin_lock_irqsave(). quoth akpm's debug facility:
[ 231.948000] SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB)
[ 232.232000] ata1.00: configured for UDMA/33
[ 232.404000] WARNING (1) at arch/i386/mm/highmem.c:47 kmap_atomic()
[ 232.404000] [<c01162e6>] kmap_atomic+0xa9/0x1ab
[ 232.404000] [<c0242c81>] ata_scsi_rbuf_get+0x1c/0x30
[ 232.404000] [<c0242caf>] ata_scsi_rbuf_fill+0x1a/0x87
[ 232.404000] [<c0243ab2>] ata_scsiop_mode_sense+0x0/0x309
[ 232.404000] [<c01729d5>] end_bio_bh_io_sync+0x0/0x37
[ 232.404000] [<c02311c6>] scsi_done+0x0/0x16
[ 232.404000] [<c02311c6>] scsi_done+0x0/0x16
[ 232.404000] [<c0242dcc>] ata_scsi_simulate+0xb0/0x13f
[...]
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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piix_init_one() allocates host private data which should be freed by
piix_host_stop(). ich_pata_ops wasn't converted to piix_host_stop()
while merging, leaking 4 bytes on driver detach. Fix it.
This was spotted using Kmemleak by Catalin Marinas.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Catalin Marinas <catalin.marinas@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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This updated patch adds the Intel ICH9 IDE mode SATA controller DID's.
Signed-off-by: Jason Gaston <jason.d.gaston@intel.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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On architectures where the atomicity of the bit operations is handled by
external means (ie a separate spinlock to protect concurrent accesses),
just doing a direct assignment on the workqueue data field (as done by
commit 4594bf159f1962cec3b727954b7c598b07e2e737) can cause the
assignment to be lost due to lack of serialization with the bitops on
the same word.
So we need to serialize the assignment with the locks on those
architectures (notably older ARM chips, PA-RISC and sparc32).
So rather than using an "unsigned long", let's use "atomic_long_t",
which already has a safe assignment operation (atomic_long_set()) on
such architectures.
This requires that the atomic operations use the same atomicity locks as
the bit operations do, but that is largely the case anyway. Sparc32
will probably need fixing.
Architectures (including modern ARM with LL/SC) that implement sane
atomic operations for SMP won't see any of this matter.
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: David Miller <davem@davemloft.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Linux Arch Maintainers <linux-arch@vger.kernel.org>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Doug Chapman noticed that mincore() will doa "copy_to_user()" of the
result while holding the mmap semaphore for reading, which is a big
no-no. While a recursive read-lock on a semaphore in the case of a page
fault happens to work, we don't actually allow them due to deadlock
schenarios with writers due to fairness issues.
Doug and Marcel sent in a patch to fix it, but I decided to just rewrite
the mess instead - not just fixing the locking problem, but making the
code smaller and (imho) much easier to understand.
Cc: Doug Chapman <dchapman@redhat.com>
Cc: Marcel Holtmann <holtmann@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Nobody uses it, but it was still wrong. Using the macro argument name
'work' meant that when we used 'work' as a member name, that would also
get replaced by the macro argument.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] cio: css_register_subchannel race.
[S390] Save prefix register for dump on panic
[S390] Fix reboot hang
[S390] Fix reboot hang on LPARs
[S390] sclp_cpi module license.
[S390] zcrypt: module unload fixes.
[S390] Hipersocket multicast queue: make sure outbound handler is called
[S390] hypfs fixes
[S390] update default configuration
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Asynchronous probe can release memory of a subchannel before
css_get_ssd_info is called. To fix this call css_get_ssd_info
before registering with driver core.
Signed-off-by: Stefan Bader <shbader@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The dump tools expect that the saved prefix register points to the
lowcore of the dump cpu. Since we set the prefix register to 0 during
reipl/dump, we have to save the original prefix register. Before we
start the dump program, we copy the original prefix register to the
designated location in the lowcore.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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We use printks after shutting down all other cpus. This is not allowed
and can lead to deadlocks. Therefore the printks have to be removed.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Reboot hangs on LPARs without diag308 support. The reason for this is,
that before the reboot is done, the channel subsystem is shut down.
During the reset on each possible subchannel a "store subchannel" is
done. This operation can end in a program check interruption, if the
specified subchannel set is not implemented by the hardware. During
the reset, currently we do not have a program check handler, which
leads to the described kernel bug. We install now a new program check
handler for the reboot code to fix this problem.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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sclp_cpi is GPL. Make the module not taint the kernel
Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Add code to reset all queues for a domain and add missing tasklet_kill
call to ap bus module exit code.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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A HiperSocket multicast queue works asynchronously. When sending
buffers, the buffer state change from PRIMED to EMPTY may happen
delayed. Reschedule the checking for changes in the outbound queue,
if there are still PRIMED buffers.
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Correct typo to make hypfs work on systems that support only diag204
subcode 4 and fix error handling in hypfs_diag_init.
Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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