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From the 01408c4939479ec46c15aa7ef6e2406be50eeeca log message:
The problem is that when we write to a file, the copy from userspace to
pagecache is first done with preemption disabled, so if the source
address is not immediately available the copy fails *and* *zeros* *the*
*destination*.
This is a problem because a concurrent read (which admittedly is an odd
thing to do) might see zeros rather that was there before the write, or
what was there after, or some mixture of the two (any of these being a
reasonable thing to see).
If the copy did fail, it will immediately be retried with preemption
re-enabled so any transient problem with accessing the source won't
cause an error.
The first copying does not need to zero any uncopied bytes, and doing
so causes the problem. It uses copy_from_user_atomic rather than
copy_from_user so the simple expedient is to change copy_from_user_atomic
to *not* zero out bytes on failure.
< --- end cite --- >
This patch finally implements at least a not so pretty solution by
duplicating the relevant part of __copy_user.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The kernel use 64-bit for sc_regs[0], and both N32/N64 userland
expects it was 64-bit. But size of 'long' on N32 is actually 32-bit.
So this definition make some confusion. Use __u32 and __u64 for
N32/N64 sigcontext to get rid of this confusion.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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powerpc gets:
init/main.c: In function `do_basic_setup':
init/main.c:714: warning: implicit declaration of function `init_irq_proc'
but we cannot include linux/irq.h in generic code.
Fix it by moving the declaration into linux/interrupt.h instead.
And make sure all code that defines init_irq_proc() is including
linux/interrupt.h.
And nuke an ifdef-in-C
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Update defconfigs
[MIPS] Support for several more SNI RM models.
[MIPS] Include <asm/bugs> to for declaration of check_bugs32.
[MIPS] Add external declaration of pagetable_init() to pgalloc.h
[MIPS] Make kernel_thread_helper() static
[MIPS] Make __declare_dbe_table static and avoid it getting optimized away
[MIPS] Use MIPS R2 instructions for bitops.
[MIPS] signals: Share even more code.
[MIPS] Fix CONFIG_MIPS32_N32=y CONFIG_MIPS32_O32=n build
[MIPS] Iomap implementation.
[MIPS] <asm/compat-signal.h> needs to include <asm/uaccess.h>.
[MIPS] IP27: Fix warning.
[MIPS] Fix sigset_t endianess swapping issues in 32-bit compat code.
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* git://git.infradead.org/mtd-2.6: (49 commits)
[MTD] [NAND] S3C2412 fix hw ecc
[MTD] [NAND] Work around false compiler warning in CAFÉ driver
[JFFS2] printk warning fixes
[MTD] [MAPS] ichxrom warning fix
[MTD] [MAPS] amd76xrom warning fix
[MTD] [MAPS] esb2rom warning fixes
[MTD] [MAPS] ck804xrom warning fix
[MTD] [MAPS] netsc520 warning fix
[MTD] [MAPS] sc520cdp warning fix
[MTD] [ONENAND] onenand_base warning fix
[MTD] [NAND] eXcite nand flash driver
[MTD] Improve heuristic for detecting wrong-endian RedBoot partition table
[MTD] Fix RedBoot partition parsing regression harder.
[MTD] [NAND] S3C2410: Hardware ECC correction code
[JFFS2] Use MTD_OOB_AUTO to automatically place cleanmarker on NAND
[MTD] Clarify OOB-operation interface comments
[MTD] remove unused ecctype,eccsize fields from struct mtd_info
[MTD] [NOR] Intel: remove ugly PROGREGION macros
[MTD] [NOR] STAA: use writesize instead off eccsize to represent ECC block
[MTD] OneNAND: Invalidate bufferRAM after erase
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* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6:
[SCSI] SCSI core: better initialization for sdev->scsi_level
[SCSI] scsi_proc.c: display sdev->scsi_level correctly
[SCSI] megaraid_sas: update version and author info
[SCSI] megaraid_sas: return sync cache call with success
[SCSI] megaraid_sas: replace pci_alloc_consitent with dma_alloc_coherent in ioctl path
[SCSI] megaraid_sas: add bios_param in scsi_host_template
[SCSI] megaraid_sas: do not process cmds if hw_crit_error is set
[SCSI] scsi_transport.h should include scsi_device.h
[SCSI] aic79xx: remove extra newline from info message
[SCSI] scsi_scan.c: handle bad inquiry responses
[SCSI] aic94xx: tie driver to the major number of the sequencer firmware
[SCSI] lpfc: add PCI error recovery support
[SCSI] megaraid: pci_module_init to pci_register_driver
[SCSI] tgt: fix the user/kernel ring buffer interface
[SCSI] sgiwd93: interfacing to wd33c93
[SCSI] wd33c93: Fast SCSI with WD33C93B
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master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input:
Input: remove obsolete setup parameters from input drivers
Input: HIL - fix improper call to release_region()
Input: hid-lgff - treat devices as joysticks unless told otherwise
Input: HID - add support for Logitech Formula Force EX
Input: gpio-keys - switch to common GPIO API
Input: do not lock device when showing name, phys and uniq
Input: i8042 - let serio bus suspend ports
Input: psmouse - properly reset mouse on shutdown/suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b37' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
[PATCH] AUDIT_FD_PAIR
[PATCH] audit config lockdown
[PATCH] minor update to rule add/delete messages (ver 2)
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* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
Documentation/kernel-docs.txt update.
arch/cris: typo in KERN_INFO
Storage class should be before const qualifier
kernel/printk.c: comment fix
update I/O sched Kconfig help texts - CFQ is now default, not AS.
Remove duplicate listing of Cris arch from README
kbuild: more doc. cleanups
doc: make doc. for maxcpus= more visible
drivers/net/eexpress.c: remove duplicate comment
add a help text for BLK_DEV_GENERIC
correct a dead URL in the IP_MULTICAST help text
fix the BAYCOM_SER_HDX help text
fix SCSI_SCAN_ASYNC help text
trivial documentation patch for platform.txt
Fix typos concerning hierarchy
Fix comment typo "spin_lock_irqrestore".
Fix misspellings of "agressive".
drivers/scsi/a100u2w.c: trivial typo patch
Correct trivial typo in log2.h.
Remove useless FIND_FIRST_BIT() macro from cardbus.c.
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6
* 'kill-jffs' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
Remove JFFS (version 1), as scheduled.
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'acpi' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[PATCH] libata: wrong sizeof for BUFFER
[PATCH] libata: change order of _SDD/_GTF execution (resend #3)
[PATCH] libata: ACPI _SDD support
[PATCH] libata: ACPI and _GTF support
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master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (51 commits)
sk98lin: mark deprecated in Kconfig
Hostess SV-11 depends on INET
Fix link autonegotiation timer.
sk98lin: planned removal
B44: increase wait loop
b44: replace define
e1000: allow ethtool to see link status when down
e1000: remove obsolete custom pci_save_state code
e1000: fix shared interrupt warning message
atm: Use ARRAY_SIZE macro when appropriate
bugfixes and new hardware support for arcnet driver
pcnet32 NAPI no longer experimental
MAINTAINER
macb: Remove inappropriate spinlocks around mii calls
Convert meth to netdev_priv
sky2: v1.13
sky2: receive error handling improvements
sky2: transmit timeout
sky2: flow control negotiation for Yukon-FE
sky2: no need to reset pause bits on shutdown
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* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (117 commits)
[ARM] 4058/2: iop32x: set ->broken_parity_status on n2100 onboard r8169 ports
[ARM] 4140/1: AACI stability add ac97 timeout and retries
[ARM] 4139/1: AACI record support
[ARM] 4138/1: AACI: multiple channel support for IRQ handling
[ARM] 4211/1: Provide a defconfig for ns9xxx
[ARM] 4210/1: base for new machine type "NetSilicon NS9360"
[ARM] 4222/1: S3C2443: Remove reference to missing S3C2443_PM
[ARM] 4221/1: S3C2443: DMA support
[ARM] 4220/1: S3C24XX: DMA system initialised from sysdev
[ARM] 4219/1: S3C2443: DMA source definitions
[ARM] 4218/1: S3C2412: fix CONFIG_CPU_S3C2412_ONLY wrt to S3C2443
[ARM] 4217/1: S3C24XX: remove the dma channel show at startup
[ARM] 4090/2: avoid clash between PXA and SA1111 defines
[ARM] 4216/1: add .gitignore entries for ARM specific files
[ARM] 4214/2: S3C2410: Add Armzone QT2410
[ARM] 4215/1: s3c2410 usb device: per-platform vbus_draw
[ARM] 4213/1: S3C2410 - Update definition of ADCTSC_XY_PST
[ARM] 4098/1: ARM: rtc_lock only used with rtc_cmos
[ARM] 4137/1: Add kexec support
[ARM] 4201/1: SMP barriers pair needed for the secondary boot process
...
Fix up conflict due to typedef removal in sound/arm/aaci.h
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* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (34 commits)
[POWERPC] 86xx: Cleaned up platform dts files
[POWERPC] 85xx: Renamed MPC8568 MDS board code to match other boards
[POWERPC] 85xx: Cleaning up machine probing
[POWERPC] QE: clean up ucc_slow.c and ucc_fast.c
[POWERPC] 85xx: Cleaned up platform dts files
[POWERPC] 83xx: Renamed MPC8323 MDS dts and defconfig to match other boards
[POWERPC] 83xx: Updated and renamed MPC8360PB to MPC836x MDS
[POWERPC] 83xx: Use of_platform_bus_probe to setup QE devices
[POWERPC] 83xx: use default value of loops_per_jiffy
[POWERPC] 83xx: Remove obsolete setting of ROOT_DEV.
[POWERPC] 83xx: Cleaning up machine probing and board initcalls
[POWERPC] Dispose irq mapping when done in mpc52xx_serial.c
[POWERPC] 86xx: Add missing of_node_put() in mpc86xx_hpcn_init_irq().
[POWERPC] 8[56]xx: Remove obsolete setting of ROOT_DEV for 85xx and 86xx platforms.
[POWERPC] pseries: Enabling auto poweron after power is restored.
[POWERPC] use winbond libata instead of ide driver for pseries CD drives
[POWERPC] powerpc: remove references to the obsolete linux,platform property
[POWERPC] add of_get_mac_address and update fsl_soc.c to use it
[POWERPC] 83xx: Cleaned up 83xx platform dts files
[POWERPC] Fix bug with early ioremap and 64k pages
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* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6: (30 commits)
ide: make ide_hwif_t.ide_dma_host_on void (v2)
ide: make ide_hwif_t.ide_dma_{host_off,off_quietly} void (v2)
ide: add ide_set_dma() helper (v2)
sgiioc4: fix sgiioc4_ide_dma_check() to enable/disable DMA properly
ide: disable DMA in ->ide_dma_check for "no IORDY" case (v2)
ide: convert ide_hwif_t.mmio into flag (v2)
ide: use PIO/MMIO operations directly where possible (v2)
ide: add ide_use_fast_pio() helper (v3)
ide: unexport ide_set_xfer_rate() (v2)
ide: remove ide_drive_t.usage
ide: remove ide_pci_device_t tables with only one entry
ide: remove write-only ide_hwif_t.no_dsc flag
ide: remove write-only ide_pio_data_t.blacklisted
sis5513: sis5513_config_xfer_rate() cleanup
piix: cleanup
svwks: small cleanup
cs5530: small cleanup
hpt366: remove redundant check from init_dma_hpt366()
trm290: remove redundant CONFIG_BLK_DEV_IDEDMA #ifdef-s
au1xxx-ide: remove dead code
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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/core: Set static rate in ib_init_ah_from_path()
IB/ipath: Make ipath_map_sg() static
IB/core: Fix sparse warnings about shadowed declarations
RDMA/cma: Add multicast communication support
IB/sa: Track multicast join/leave requests
IPoIB: CM error handling thinko fix
RDMA/cxgb3: Remove Open Grid Computing copyrights in iw_cxgb3 driver
RDMA/cxgb3: Fail posts synchronously when in TERMINATE state
RDMA/iwcm: iw_cm_id destruction race fixes
IB/ehca: Change query_port() to return LINK_UP instead UNKNOWN
IB/ehca: Allow en/disabling scaling code via module parameter
IB/ehca: Fix race condition/locking issues in scaling code
IB/ehca: Rework irq handler
IPoIB: Only allow root to change between datagram and connected mode
IB/mthca: Fix allocation of ICM chunks in coherent memory
IB/mthca: Allow the QP state transition RESET->RESET
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6:
PCI: Make PCI device numa-node attribute visible in sysfs
PCI: add systems for automatic breadth-first device sorting
PCI: PCI devices get assigned redundant IRQs
PCI: Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE boot options
PCI: pci.txt fix __devexit() usage
PCI/sysfs/kobject kernel-doc fixes
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6:
sysfs: fix build errors: uevent with CONFIG_SYSFS=n
pcmcia: some class_device fallout
Driver core: device_add_attrs() cleanup
debugfs: Remove misleading comments.
debugfs: implement symbolic links
Driver: remove redundant kobject_unregister checks
kobject: kobj->k_name verification fix
serial: Add PCMCIA IDs for Quatech DSP-100 dual RS232 adapter.
Driver core: let request_module() send a /sys/modules/kmod/-uevent
Driver.h copyright update
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* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (39 commits)
USB: at91-ohci, handle extra at91sam9261 ahb clock
USB: another id for cp2101 driver
USB: ueagle-atm.c needs sched.h
USB: at91_udc, shrink runtime footprint
usbnet: add missing Kconfig for KC2190 cables
usbnet: init fault (oops) cleanup, whitespace fixes
usbnet: recognize SiteCom CN-124
usb: Remove Airprime device from option.c
USB: change __init to __devinit for isp116x_probe
USB: ps3: don't call ps3_system_bus_driver_register on other platforms
USB: hid-core.c: Removes GTCO CalComp Interwrite IPanel PIDs from blacklist
USB: kernel-doc fixes
USB: quirky device for cdc-acm
USB: cdc-acm: fix incorrect throtteling, make set_control optional
USB: unconfigure devices which have config 0
USB: make usb_iso_packet_descriptor.status signed
USB: fix g_serial small error
USB: use __u32 rather than u32 in userspace ioctls in usbdevice_fs.h
USB Storage: US_FL_IGNORE_RESIDUE needed for Aiptek MP3 Player
USB: Fix misspelled "USBNET_MII" kernel config option.
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This fixes some sparse warnings.
pgtable-32.c:15:6: warning: symbol 'pgd_init' was not declared. Should it be static?
pgtable-32.c:32:13: warning: symbol 'pagetable_init' was not declared. Should it be static?
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Add R2 optimized variants of clear_bit, set_bit and test_and_clear_bit.
With gcc 4.1.1 this saves 1592 bytes on a defconfig (minus IPv6) kernel.
Turns out that R2 bitop instructions are no gain for the other bitop
functions.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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native and compat do_signal and handle_signal are identical and can easily
be unified.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This implementation has support for the concept of one separate ioport
address space by PCI domain. A pointer to the virtual address where
the port space of a domain has been mapped has been added to struct
pci_controller and systems should be fixed to fill in this value. For
single domain systems this will be the same value as passed to
set_io_port_base().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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access_ok in compat-signal.h is wrong (checking destination instead of
source) and redundant (already checked before calling this function).
Also sf_mask in struct sigframe32 should be compat_sigset_t type.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Fixed conflicts:
arch/arm/Makefile
arch/arm/mm/Kconfig
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Let serio subsystem take care of suspending the ports; concentrate
on suspending/resuming the controller itself.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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Provide an audit record of the descriptor pair returned by pipe() and
socketpair(). Rewritten from the original posted to linux-audit by
John D. Ramsdell <ramsdell@mitre.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Refactored and cleaned up ucc_fast.c and ucc_slow.c so that the two files
look more alike and are easier to read. Removed uccf_printk() and related
functions, because they were just front-ends to printk(). Fixed some
spacing and tabbing issues. Minor optimizations of some code. Changed
the type of some variables to their proper type (mostly buffer
descriptors).
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Unmaintained for years, few if any users.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Add device id for the Attansic L1 chip to pci_ids.h, then use it.
Signed-off-by: Chris Snook <csnook@redhat.com>
Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The C99 specification states in section 6.11.5:
The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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heirarchical, hierachical -> hierarchical
heirarchy, hierachy -> hierarchy
Signed-off-by: Uwe Kleine-König <zeisberg@informatik.uni-freiburg.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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Fix the various misspellings of "agressive", as well as a couple
other things on the same lines while we're there.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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Single typo correction in include/linux/log2.h.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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Globally, s/driverfs/sysfs/g.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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Correct mis-spellings of "algorithm", "appear", "consistent" and
(shame, shame) "kernel".
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This patch gets the DMA system for the S3C24XX
ready for the S3C2443, which requires 6 dma channels
at a different stride, and different base IRQ.
The DMA system is now initialised from the same
drivers which apply the DMA mappings, as well
as removing the DMA sysdev intialisation out of
the main init code (which is now being called
from a sysdev probe, so cannot add a new sysdev)
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Defines for the S3C2443 DMA source selection,
and update the maximum channels to 6 if the S3C2443
is selected.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The Lubbock platform uses both a PXA25x and a SA1111 at the same time.
Both chips have the same "Serial Audio Controller" registers although
the SA1111 one is never expected to be used in preference to the PXA25x
one. So let's disable the SA1111 defines whenever compilation is for a
PXA architecture and make the PXA defines always defined.
This removes a bunch of "already defined" warnings as well since the
current hack to prevent them depended on include ordering which wasn't
always right.
While at it, clean up the SA1111 defines allowing to get rid of the
__CCREG() macro.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Introduce a platform_device (machine) specific callback function
which gets called when the amount of power we can draw from Vbus
has changed.
Signed-off-by: Harald Welte <laforge@openmoko.org>
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Update S3C2410_ADCTSC_XY_PST macro to allow setting the ADCTSC_XY_PST
bits.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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